Climate and average weather in Santo Domingo
In Santo Domingo, the weather is muggy, hot, wet, and partly cloudy and remarkably steady, with daytime highs holding near hot levels all year. The wettest stretch peaks around August.
Over the course of the year, the temperature in Santo Domingo typically varies from 20°C to 31°C, and is rarely below 18°C or above 32°C. August is the hottest month of the year, while January is the coldest.
Based on the travel score, the best times of year to visit Santo Domingo for warm-weather activities are from early January to early April and late November to late December.
- Hottest
- Aug
- 31°
- Coldest
- Jan
- 20°
- Wettest
- Aug
- 129 mm
- Driest
- Feb
- 30 mm
- Rain / yr
- 973 mm
- 205 wet days
- Daylight
- 10.9–13.1 h
- shortest–longest
- Elevation
- 24 m
- 18.5°N
- Clearest
- Feb
- 37% cloud
Santo Domingo is capital of the Dominican Republic.
- Density
- 1,691/km²
- people per km²
- Founded
- 1496
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Santo Domingo weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around early January to early April.
Temperature through the year
Daily average highs and lows in Santo Domingo, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Santo Domingo stay fairly even through the year, without a distinct hot or cool season. The warmest month is August, with an average high of 31°C and low of 23°C; the coolest is January, with an average low of 20°C and high of 28°C.
Days typically run about 8°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 29 | 30 | 30 | 30 | 31 | 31 | 31 | 30 | 29 | 29 |
| Avg low (°C) | 20 | 20 | 21 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 21 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 28 | 20 |
| Feb | 28 | 20 |
| Mar | 29 | 21 |
| Apr | 30 | 22 |
| May | 30 | 22 |
| Jun | 30 | 23 |
| Jul | 31 | 23 |
| Aug | 31 | 23 |
| Sep | 31 | 23 |
| Oct | 30 | 23 |
| Nov | 29 | 22 |
| Dec | 29 | 21 |
How hot and cold Santo Domingo really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the hottest afternoons, once humidity is folded in, Santo Domingo feels like about 36°C (around August 29). About 213 days a year carry some heat stress, peaking in August.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 30 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 35 | 34 | 32 | 30 |
| Air high (°C) | 28 | 28 | 29 | 30 | 30 | 30 | 31 | 31 | 31 | 30 | 29 | 29 |
| Feels-like low (°C) | 20 | 20 | 20 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 21 |
| Air low (°C) | 20 | 20 | 21 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 21 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 30 | 28 | 20 | 20 |
| Feb | 30 | 28 | 20 | 20 |
| Mar | 31 | 29 | 20 | 21 |
| Apr | 32 | 30 | 22 | 22 |
| May | 33 | 30 | 22 | 22 |
| Jun | 34 | 30 | 23 | 23 |
| Jul | 35 | 31 | 23 | 23 |
| Aug | 36 | 31 | 23 | 23 |
| Sep | 35 | 31 | 23 | 23 |
| Oct | 34 | 30 | 23 | 23 |
| Nov | 32 | 29 | 22 | 22 |
| Dec | 30 | 29 | 21 | 21 |
Average hourly temperature in Santo Domingo
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on August afternoons, near 31°C, and coldest before dawn in January, near 20°C.
Santo Domingo weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 20° | 32 | 11.8 | 11 | 6.1 |
| Feb | 28° / 20° | 30 | 10.5 | 11.4 | 5.9 |
| Mar | 29° / 21° | 37 | 11.9 | 11.9 | 5.5 |
| Apr | 30° / 22° | 62 | 15.2 | 12.4 | 4.7 |
| May | 30° / 22° | 120 | 21.3 | 12.9 | 3.8 |
| Jun | 30° / 23° | 107 | 21.6 | 13.1 | 3.5 |
| Jul | 31° / 23° | 108 | 21.1 | 13 | 3.6 |
| Aug | 31° / 23° | 129 | 21.3 | 12.6 | 3.5 |
| Sep | 31° / 23° | 120 | 21.1 | 12.1 | 3.4 |
| Oct | 30° / 23° | 115 | 21.6 | 11.6 | 3.7 |
| Nov | 29° / 22° | 75 | 15.9 | 11.1 | 4.7 |
| Dec | 29° / 21° | 39 | 11.4 | 10.9 | 5.8 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Santo Domingo gets about 973 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.
The wetter season lasts 6.7 months, from around Apr 25 to Nov 14, peaking in May at about 75% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 19.
August is the wettest month by volume, with 129 mm over about 21 wet days; February is the driest, with 30 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 37 | 38 | 38 | 51 | 68 | 72 | 68 | 68 | 71 | 70 | 53 | 37 |
| Rain days | 12 | 11 | 12 | 15 | 21 | 22 | 21 | 21 | 21 | 22 | 16 | 11 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 37 | 12 |
| Feb | 38 | 11 |
| Mar | 38 | 12 |
| Apr | 51 | 15 |
| May | 68 | 21 |
| Jun | 72 | 22 |
| Jul | 68 | 21 |
| Aug | 68 | 21 |
| Sep | 71 | 21 |
| Oct | 70 | 22 |
| Nov | 53 | 16 |
| Dec | 37 | 11 |
Monthly rainfall
Over a full year, Santo Domingo collects about 973 mm of rain across 205 wet days — roughly 81 mm in an average month.
It doesn’t fall evenly. August is the wettest month with 129 mm, while February is the driest at just 30 mm. The three wettest months alone bring about 38% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 32 | 30 | 37 | 62 | 120 | 107 | 108 | 129 | 120 | 115 | 75 | 39 |
| Rain days | 12 | 11 | 12 | 15 | 21 | 22 | 21 | 21 | 21 | 22 | 16 | 11 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 32 | 12 |
| Feb | 30 | 11 |
| Mar | 37 | 12 |
| Apr | 62 | 15 |
| May | 120 | 21 |
| Jun | 107 | 22 |
| Jul | 108 | 21 |
| Aug | 129 | 21 |
| Sep | 120 | 21 |
| Oct | 115 | 22 |
| Nov | 75 | 16 |
| Dec | 39 | 11 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Santo Domingo, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around November 17 and lasts for 5.4 months, ending around April 28. The clearest month is February, when the sky is clear, mostly clear, or partly cloudy 88% of the time on average.
The cloudier part of the year begins around April 29 and lasts for 6.6 months, ending around November 16. The cloudiest month is June, when it is overcast or mostly cloudy 53% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 86 | 88 | 82 | 73 | 48 | 47 | 60 | 54 | 47 | 52 | 67 | 80 |
| Cloudier (%) | 14 | 12 | 18 | 27 | 52 | 53 | 40 | 46 | 53 | 48 | 33 | 20 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 86 | 14 |
| Feb | 88 | 12 |
| Mar | 82 | 18 |
| Apr | 73 | 27 |
| May | 48 | 52 |
| Jun | 47 | 53 |
| Jul | 60 | 40 |
| Aug | 54 | 46 |
| Sep | 47 | 53 |
| Oct | 52 | 48 |
| Nov | 67 | 33 |
| Dec | 80 | 20 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 5, brings about 13 h 06 min of light; the shortest, around January 1, only 10 h 54 min — a swing of roughly 2 h 12 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.0 | 11.4 | 11.9 | 12.4 | 12.9 | 13.1 | 13.0 | 12.6 | 12.1 | 11.6 | 11.1 | 10.9 |
| Sunrise (AM) | 7:19 | 7:13 | 6:53 | 6:27 | 6:10 | 6:07 | 6:15 | 6:25 | 6:31 | 6:37 | 6:51 | 7:09 |
| Sunset (PM) | 6:19 | 6:35 | 6:45 | 6:52 | 7:02 | 7:13 | 7:16 | 7:03 | 6:37 | 6:12 | 5:58 | 6:03 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 11.0 | 7:19 | 6:19 |
| Feb | 11.4 | 7:13 | 6:35 |
| Mar | 11.9 | 6:53 | 6:45 |
| Apr | 12.4 | 6:27 | 6:52 |
| May | 12.9 | 6:10 | 7:02 |
| Jun | 13.1 | 6:07 | 7:13 |
| Jul | 13.0 | 6:15 | 7:16 |
| Aug | 12.6 | 6:25 | 7:03 |
| Sep | 12.1 | 6:31 | 6:37 |
| Oct | 11.6 | 6:37 | 6:12 |
| Nov | 11.1 | 6:51 | 5:58 |
| Dec | 10.9 | 7:09 | 6:03 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Santo Domingo averages about 12 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 5 and 19 days.
The sunnier stretch runs 5.4 months, from around Nov 7 to Apr 19. The sunniest month is February, with roughly 19 sunny days (bright).
The greyest month is May, down near 7 sunny days — about 63% fewer than the February peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 19 | 17 | 15 | 12 | 7 | 8 | 12 | 10 | 8 | 10 | 13 | 18 |
| Sky | Bright | Bright | Mixed | Mixed | Gloomy | Gloomy | Mixed | Mixed | Gloomy | Mixed | Mixed | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 19 | Bright |
| Feb | 17 | Bright |
| Mar | 15 | Mixed |
| Apr | 12 | Mixed |
| May | 7 | Gloomy |
| Jun | 8 | Gloomy |
| Jul | 12 | Mixed |
| Aug | 10 | Mixed |
| Sep | 8 | Gloomy |
| Oct | 10 | Mixed |
| Nov | 13 | Mixed |
| Dec | 18 | Bright |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
Santo Domingo is humid all year round — on a typical day the air feels at least humid, and there is no real dry season to wait for.
The stickiest month is May, when it feels muggy, oppressive or miserable about 99% of the time. Even in March, the mildest month, the air is dry or comfortable only 4% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 2 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Humid (%) | 12 | 13 | 16 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 8 |
| Muggy (%) | 72 | 74 | 62 | 45 | 14 | 1 | 2 | 0 | 0 | 2 | 25 | 53 |
| Oppressive (%) | 13 | 9 | 18 | 47 | 77 | 81 | 82 | 75 | 75 | 80 | 71 | 38 |
| Miserable (%) | 0 | 0 | 0 | 0 | 8 | 17 | 16 | 25 | 25 | 18 | 2 | 0 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| Jan | 2 | 12 | 72 | 13 | 0 |
| Feb | 4 | 13 | 74 | 9 | 0 |
| Mar | 4 | 16 | 62 | 18 | 0 |
| Apr | 1 | 6 | 45 | 47 | 0 |
| May | 0 | 1 | 14 | 77 | 8 |
| Jun | 0 | 0 | 1 | 81 | 17 |
| Jul | 0 | 0 | 2 | 82 | 16 |
| Aug | 0 | 0 | 0 | 75 | 25 |
| Sep | 0 | 0 | 0 | 75 | 25 |
| Oct | 0 | 0 | 2 | 80 | 18 |
| Nov | 0 | 2 | 25 | 71 | 2 |
| Dec | 1 | 8 | 53 | 38 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in Santo Domingo is typically calm, near 9 km/h, and varies little with the seasons.
The windier part of the year lasts 5.7 months, from around Nov 3 to Apr 24. The windiest month is December, averaging about 10 km/h (calm).
The calmer part of the year runs from around Apr 25 to Nov 2, with June the calmest month at about 8 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 10 | 10 | 10 | 9 | 8 | 8 | 9 | 8 | 8 | 8 | 10 | 10 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 10 | calm |
| Feb | 10 | calm |
| Mar | 10 | calm |
| Apr | 9 | calm |
| May | 8 | calm |
| Jun | 8 | calm |
| Jul | 9 | calm |
| Aug | 8 | calm |
| Sep | 8 | calm |
| Oct | 8 | calm |
| Nov | 10 | calm |
| Dec | 10 | calm |
Hazard calendar for Santo Domingo
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Santo Domingo sits in the Atlantic hurricane belt; the season peaks August–October.
Best time to visit Santo Domingo
To characterize how pleasant the weather is in Santo Domingo throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late March, Santo Domingo is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Santo Domingo for general outdoor tourist activities is from late November to early April, with a peak score in the third week of January.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 6.1 | 5.9 | 5.5 | 4.7 | 3.8 | 3.6 | 3.6 | 3.5 | 3.4 | 3.7 | 4.7 | 5.8 |
| Rating | good | good | fair | fair | fair | fair | fair | poor | poor | fair | fair | good |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 6.1 | good |
| Feb | 5.9 | good |
| Mar | 5.5 | fair |
| Apr | 4.7 | fair |
| May | 3.8 | fair |
| Jun | 3.6 | fair |
| Jul | 3.6 | fair |
| Aug | 3.5 | poor |
| Sep | 3.4 | poor |
| Oct | 3.7 | fair |
| Nov | 4.7 | fair |
| Dec | 5.8 | good |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Santo Domingo for hot-weather activities is from mid November to early May, with a peak score in the second week of March.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Santo Domingo, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
Santo Domingo packs about the same all year — highs hold near 31°C. Across the year the things worth having are light clothes, rain gear and sun protection.
In August, Santo Domingo sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.
Sea temperature near Santo Domingo
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
The sea offshore is warmest in September at about 29°C and coldest in February near 27°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 27 | Warm |
| May | 28 | Warm |
| Jun | 28 | Tropical |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 28 | Warm |
UV index (midday) in Santo Domingo by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Santo Domingo peaks around August 16 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 7 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 8 | 10 | 12 | 12 | 11 | 12 | 12 | 12 | 11 | 10 | 7 | 7 |
| Level | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Very high |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Very high |
| Nov | 7 | Very high |
| Dec | 7 | High |
Average hourly UV index in Santo Domingo
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in August the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 6.5 | 7 | 8 | 8 | 8 | 8.5 | 8.5 | 8.5 | 7.5 | 7 | 6 | 6 |
| UV ≥ 6 (h/day) | 4 | 5 | 6 | 6 | 6 | 6 | 6 | 6.5 | 5.5 | 5 | 3.5 | 2.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 6.5 | 4 |
| Feb | 7 | 5 |
| Mar | 8 | 6 |
| Apr | 8 | 6 |
| May | 8 | 6 |
| Jun | 8.5 | 6 |
| Jul | 8.5 | 6 |
| Aug | 8.5 | 6.5 |
| Sep | 7.5 | 5.5 |
| Oct | 7 | 5 |
| Nov | 6 | 3.5 |
| Dec | 6 | 2.5 |
Air quality in Santo Domingo by month
Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.
Air quality in Santo Domingo is worst in June — around 31 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 15 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 16 | 16 | 17 | 18 | 23 | 31 | 29 | 25 | 23 | 24 | 18 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 16 | Moderate |
| Feb | 16 | Moderate |
| Mar | 17 | Moderate |
| Apr | 18 | Moderate |
| May | 23 | Moderate |
| Jun | 31 | Moderate |
| Jul | 29 | Moderate |
| Aug | 25 | Moderate |
| Sep | 23 | Moderate |
| Oct | 24 | Moderate |
| Nov | 18 | Moderate |
| Dec | 15 | Moderate |
Growing season
Santo Domingo is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Santo Domingo banks about 5,741 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around August.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 435 | 398 | 457 | 466 | 499 | 497 | 524 | 529 | 506 | 508 | 467 | 453 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 435 |
| Feb | 398 |
| Mar | 457 |
| Apr | 466 |
| May | 499 |
| Jun | 497 |
| Jul | 524 |
| Aug | 529 |
| Sep | 506 |
| Oct | 508 |
| Nov | 467 |
| Dec | 453 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Santo Domingo receives about 5.3 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.1 and 6.1 kWh/m².
The brighter stretch of the year lasts 6.8 months, from around Mar 3 to Sep 24. The brightest month is July, averaging about 6.1 kWh/m² (intense).
The dimmest month is December, down near 4.2 kWh/m² — roughly 32% less than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.3 | 5.0 | 5.6 | 6.0 | 5.9 | 6.1 | 6.1 | 5.9 | 5.5 | 4.9 | 4.3 | 4.1 |
| Level | Bright | Bright | Bright | Bright | Bright | Intense | Intense | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 4.3 | Bright |
| Feb | 5.0 | Bright |
| Mar | 5.6 | Bright |
| Apr | 6.0 | Bright |
| May | 5.9 | Bright |
| Jun | 6.1 | Intense |
| Jul | 6.1 | Intense |
| Aug | 5.9 | Bright |
| Sep | 5.5 | Bright |
| Oct | 4.9 | Bright |
| Nov | 4.3 | Bright |
| Dec | 4.1 | Bright |
Where is Santo Domingo?
Santo Domingo sits at 18.5°N, 69.9°W, 24 m above sea level, in Dominican Republic. The nearest listed city is Ciudad Nueva, 1.0 km away.
What Santo Domingo looks like
Topography around Santo Domingo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santo Domingo.
Within 3 km, the terrain around Santo Domingo has only modest variations in elevation — a maximum elevation change of 63 m around an average of 23 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 80 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,629 m.
The land around Santo Domingo is covered by artificial surfaces (61%) and water (33%) within 3 km, water (41%) and artificial surfaces (29%) within 16 km, and trees (44%) and water (31%) within 80 km.
Dominican Republic travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B / C
- 120 V · 60 Hz
- Prices
- ≈ 39% of US
- price level, 2025
- GDP per capita
- $11,059
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Safe drinking water
- 45%
- of population, 2024
- Homicide rate
- 10.9
- per 100k, 2023
- Road deaths
- 64.6
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 503
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Santo Domingo (18.4719°, -69.8923°, elevation 24 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).