Climate and average weather in Puerto Rico
In Puerto Rico, the weather is warm, wet, and partly cloudy and remarkably steady, with daytime highs holding near warm levels all year. The wettest stretch peaks around November.
Over the course of the year, the temperature in Puerto Rico typically varies from 16°C to 26°C, and is rarely below 15°C or above 29°C. January is the hottest month of the year, while July is the coldest.
Based on the travel score, the best times of year to visit Puerto Rico for warm-weather activities are from early January to late February and early August to mid September.
- Hottest
- Jan
- 26°
- Coldest
- Jul
- 16°
- Wettest
- Nov
- 226 mm
- Driest
- Jan
- 80 mm
- Rain / yr
- 1823 mm
- 268 wet days
- Daylight
- 11.9–12.1 h
- shortest–longest
- Elevation
- 259 m
- 1.9°N
- Clearest
- Jan
- 69% cloud
Puerto Rico is capital of Puerto Rico municipality, Caquetá Department, Colombia.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Puerto Rico 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 late February.
Temperature through the year
Daily average highs and lows in Puerto Rico, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in Puerto Rico stay fairly even through the year, without a distinct hot or cool season. The warmest month is January, with an average high of 26°C and low of 16°C; the coolest is July, with an average low of 16°C and high of 23°C.
Days typically run about 9°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 26 | 26 | 26 | 25 | 24 | 23 | 23 | 24 | 25 | 25 | 26 | 26 |
| Avg low (°C) | 16 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 16 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 26 | 16 |
| Feb | 26 | 17 |
| Mar | 26 | 17 |
| Apr | 25 | 17 |
| May | 24 | 17 |
| Jun | 23 | 16 |
| Jul | 23 | 16 |
| Aug | 24 | 16 |
| Sep | 25 | 16 |
| Oct | 25 | 16 |
| Nov | 26 | 17 |
| Dec | 26 | 16 |
Average hourly temperature in Puerto Rico
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 January afternoons, near 26°C, and coldest before dawn in July, near 16°C.
Puerto Rico 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 | 26° / 16° | 80 | 12.8 | 11.9 | 6.0 |
| Feb | 26° / 17° | 101 | 14.7 | 11.9 | 5.4 |
| Mar | 26° / 17° | 175 | 24.1 | 12 | 4.3 |
| Apr | 25° / 17° | 200 | 27.1 | 12 | 3.9 |
| May | 24° / 17° | 195 | 27.7 | 12.1 | 4.0 |
| Jun | 23° / 16° | 181 | 25.9 | 12.1 | 4.0 |
| Jul | 23° / 16° | 168 | 25.3 | 12.1 | 4.3 |
| Aug | 24° / 16° | 100 | 20.3 | 12.1 | 5.1 |
| Sep | 25° / 16° | 90 | 21 | 12 | 4.9 |
| Oct | 25° / 16° | 166 | 24.3 | 12 | 4.3 |
| Nov | 26° / 17° | 226 | 26 | 11.9 | 4.0 |
| Dec | 26° / 16° | 141 | 19.2 | 11.9 | 5.2 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Puerto Rico gets about 1823 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 4.8 months, from around Mar 9 to Jul 31, peaking in April at about 91% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 27.
November is the wettest month by volume, with 226 mm over about 26 wet days; January is the driest, with 80 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 43 | 52 | 78 | 90 | 89 | 87 | 80 | 67 | 70 | 79 | 85 | 62 |
| Rain days | 13 | 15 | 24 | 27 | 28 | 26 | 25 | 20 | 21 | 24 | 26 | 19 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 43 | 13 |
| Feb | 52 | 15 |
| Mar | 78 | 24 |
| Apr | 90 | 27 |
| May | 89 | 28 |
| Jun | 87 | 26 |
| Jul | 80 | 25 |
| Aug | 67 | 20 |
| Sep | 70 | 21 |
| Oct | 79 | 24 |
| Nov | 85 | 26 |
| Dec | 62 | 19 |
Monthly rainfall
Over a full year, Puerto Rico collects about 1823 mm of rain across 268 wet days — roughly 152 mm in an average month.
It doesn’t fall evenly. November is the wettest month with 226 mm, while January is the driest at just 80 mm. The three wettest months alone bring about 34% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 80 | 101 | 175 | 200 | 195 | 181 | 168 | 100 | 90 | 166 | 226 | 141 |
| Rain days | 13 | 15 | 24 | 27 | 28 | 26 | 25 | 20 | 21 | 24 | 26 | 19 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 80 | 13 |
| Feb | 101 | 15 |
| Mar | 175 | 24 |
| Apr | 200 | 27 |
| May | 195 | 28 |
| Jun | 181 | 26 |
| Jul | 168 | 25 |
| Aug | 100 | 20 |
| Sep | 90 | 21 |
| Oct | 166 | 24 |
| Nov | 226 | 26 |
| Dec | 141 | 19 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Puerto Rico, 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 December 6 and lasts for 2.7 months, ending around February 24. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 32% of the time on average.
The cloudier part of the year begins around February 25 and lasts for 4.8 months, ending around July 20. The cloudiest month is April, when it is overcast or mostly cloudy 96% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 32 | 22 | 10 | 4 | 5 | 9 | 15 | 24 | 22 | 13 | 9 | 23 |
| Cloudier (%) | 68 | 78 | 90 | 96 | 95 | 91 | 85 | 76 | 78 | 87 | 91 | 77 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 32 | 68 |
| Feb | 22 | 78 |
| Mar | 10 | 90 |
| Apr | 4 | 96 |
| May | 5 | 95 |
| Jun | 9 | 91 |
| Jul | 15 | 85 |
| Aug | 24 | 76 |
| Sep | 22 | 78 |
| Oct | 13 | 87 |
| Nov | 9 | 91 |
| Dec | 23 | 77 |
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. Close to the equator, Puerto Rico barely changes through the year: days stay near 12 h 06 min of light in every season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.9 | 11.9 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 |
| Sunrise (AM) | 6:13 | 6:17 | 6:11 | 6:00 | 5:54 | 5:58 | 6:03 | 6:03 | 5:55 | 5:47 | 5:49 | 6:00 |
| Sunset (PM) | 6:07 | 6:13 | 6:10 | 6:02 | 5:59 | 6:04 | 6:09 | 6:07 | 5:55 | 5:44 | 5:43 | 5:54 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 11.9 | 6:13 | 6:07 |
| Feb | 11.9 | 6:17 | 6:13 |
| Mar | 12.0 | 6:11 | 6:10 |
| Apr | 12.0 | 6:00 | 6:02 |
| May | 12.1 | 5:54 | 5:59 |
| Jun | 12.1 | 5:58 | 6:04 |
| Jul | 12.1 | 6:03 | 6:09 |
| Aug | 12.1 | 6:03 | 6:07 |
| Sep | 12.0 | 5:55 | 5:55 |
| Oct | 12.0 | 5:47 | 5:44 |
| Nov | 11.9 | 5:49 | 5:43 |
| Dec | 11.9 | 6:00 | 5:54 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Puerto Rico averages about 1 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 4 days.
The sunnier stretch runs 2.6 months, from around Dec 8 to Feb 24. The sunniest month is January, with roughly 3 sunny days (gloomy).
The greyest month is May, down near 0 sunny days — about 94% fewer than the January peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 3 | 2 | 1 | 0 | 0 | 0 | 1 | 2 | 2 | 1 | 1 | 2 |
| Sky | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 3 | Gloomy |
| Feb | 2 | Gloomy |
| Mar | 1 | Gloomy |
| Apr | 0 | Gloomy |
| May | 0 | Gloomy |
| Jun | 0 | Gloomy |
| Jul | 1 | Gloomy |
| Aug | 2 | Gloomy |
| Sep | 2 | Gloomy |
| Oct | 1 | Gloomy |
| Nov | 1 | Gloomy |
| Dec | 2 | Gloomy |
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.
In Puerto Rico, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 2.7 months, from around September 25 to December 15. The muggiest month is November, when the air feels humid, muggy or worse about 97% of the time.
The most comfortable stretch runs from around December 16 to March 10, and January is the most comfortable month — the air is dry or comfortable 51% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 13 | 16 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| Comfortable (%) | 37 | 29 | 14 | 4 | 3 | 8 | 19 | 34 | 26 | 13 | 3 | 20 |
| Humid (%) | 47 | 52 | 76 | 85 | 90 | 91 | 81 | 66 | 74 | 81 | 82 | 73 |
| Muggy (%) | 2 | 3 | 7 | 10 | 7 | 1 | 0 | 0 | 0 | 6 | 15 | 5 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| Jan | 13 | 37 | 47 | 2 |
| Feb | 16 | 29 | 52 | 3 |
| Mar | 3 | 14 | 76 | 7 |
| Apr | 0 | 4 | 85 | 10 |
| May | 0 | 3 | 90 | 7 |
| Jun | 0 | 8 | 91 | 1 |
| Jul | 0 | 19 | 81 | 0 |
| Aug | 0 | 34 | 66 | 0 |
| Sep | 0 | 26 | 74 | 0 |
| Oct | 0 | 13 | 81 | 6 |
| Nov | 0 | 3 | 82 | 15 |
| Dec | 3 | 20 | 73 | 5 |
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.
Wind in Puerto Rico is steady company: average speeds sit near 4 km/h — calm — in every month of the year, with no meaningful windy or calm season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 5 | calm |
| Feb | 4 | calm |
| Mar | 4 | calm |
| Apr | 4 | calm |
| May | 3 | calm |
| Jun | 3 | calm |
| Jul | 3 | calm |
| Aug | 4 | calm |
| Sep | 4 | calm |
| Oct | 4 | calm |
| Nov | 4 | calm |
| Dec | 4 | calm |
Best time to visit Puerto Rico
To characterize how pleasant the weather is in Puerto Rico throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around mid February, Puerto Rico 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 times of year to visit Puerto Rico for general outdoor tourist activities run from early August to late September and again from mid December to late February, with a peak score in the last 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) | 5.9 | 5.4 | 4.4 | 3.9 | 4.0 | 4.1 | 4.4 | 5.1 | 4.9 | 4.3 | 4.0 | 5.2 |
| Rating | good | fair | fair | fair | fair | fair | fair | fair | fair | fair | fair | fair |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 5.9 | good |
| Feb | 5.4 | fair |
| Mar | 4.4 | fair |
| Apr | 3.9 | fair |
| May | 4.0 | fair |
| Jun | 4.1 | fair |
| Jul | 4.4 | fair |
| Aug | 5.1 | fair |
| Sep | 4.9 | fair |
| Oct | 4.3 | fair |
| Nov | 4.0 | fair |
| Dec | 5.2 | fair |
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 Puerto Rico for hot-weather activities is from mid December to late February, with a peak score in the last week of January.
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 Puerto Rico, 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.
Puerto Rico packs about the same all year — highs hold near 26°C. Across the year the things worth having are light clothes, rain gear and sun protection.
In January, Puerto Rico sees daytime highs around 26°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.
UV index (midday) in Puerto Rico 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 Puerto Rico peaks around February 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 11 (extreme).
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) | 14 | 15 | 14 | 13 | 14 | 13 | 12 | 11 | 14 | 13 | 12 | 11 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 13 | Extreme |
| May | 14 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 14 | Extreme |
| Oct | 13 | Extreme |
| Nov | 12 | Extreme |
| Dec | 11 | Extreme |
Average hourly UV index in Puerto Rico
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 February 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) | 8 | 8.5 | 8 | 8 | 8 | 8 | 8 | 7.5 | 8 | 8 | 8 | 7.5 |
| UV ≥ 6 (h/day) | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6 | 5.5 | 6.5 | 6.5 | 6 | 5.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 8 | 6.5 |
| Feb | 8.5 | 6.5 |
| Mar | 8 | 6.5 |
| Apr | 8 | 6.5 |
| May | 8 | 6.5 |
| Jun | 8 | 6.5 |
| Jul | 8 | 6 |
| Aug | 7.5 | 5.5 |
| Sep | 8 | 6.5 |
| Oct | 8 | 6.5 |
| Nov | 8 | 6 |
| Dec | 7.5 | 5.5 |
Air quality in Puerto Rico 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 Puerto Rico is worst in February — around 54 µg/m³ PM2.5 (poor), about 5.3× the cleanest month (July, 10 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) | 23 | 54 | 29 | 19 | 13 | 11 | 10 | 13 | 14 | 13 | 13 | 13 |
| Level | Moderate | Poor | Moderate | Moderate | Moderate | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 23 | Moderate |
| Feb | 54 | Poor |
| Mar | 29 | Moderate |
| Apr | 19 | Moderate |
| May | 13 | Moderate |
| Jun | 11 | Good |
| Jul | 10 | Good |
| Aug | 13 | Moderate |
| Sep | 14 | Moderate |
| Oct | 13 | Moderate |
| Nov | 13 | Moderate |
| Dec | 13 | Moderate |
Growing season
Puerto Rico 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. Puerto Rico banks about 3,877 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 353 | 325 | 349 | 326 | 321 | 289 | 287 | 303 | 314 | 337 | 332 | 343 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 353 |
| Feb | 325 |
| Mar | 349 |
| Apr | 326 |
| May | 321 |
| Jun | 289 |
| Jul | 287 |
| Aug | 303 |
| Sep | 314 |
| Oct | 337 |
| Nov | 332 |
| Dec | 343 |
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.
Puerto Rico receives about 4.8 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.9 and 5.5 kWh/m².
The brighter stretch of the year lasts 7.5 months, from around Aug 14 to Mar 29. The brightest month is September, averaging about 5.4 kWh/m² (bright).
The dimmest month is June, down near 4.0 kWh/m² — roughly 27% less than the September peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.4 | 5.3 | 5.0 | 4.6 | 4.2 | 4.0 | 4.1 | 4.9 | 5.5 | 5.2 | 4.9 | 5.1 |
| Level | Bright | Bright | Bright | Bright | Bright | Moderate | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 5.4 | Bright |
| Feb | 5.3 | Bright |
| Mar | 5.0 | Bright |
| Apr | 4.6 | Bright |
| May | 4.2 | Bright |
| Jun | 4.0 | Moderate |
| Jul | 4.1 | Bright |
| Aug | 4.9 | Bright |
| Sep | 5.5 | Bright |
| Oct | 5.2 | Bright |
| Nov | 4.9 | Bright |
| Dec | 5.1 | Bright |
Where is Puerto Rico?
Puerto Rico sits at 1.9°N, 75.2°W, 259 m above sea level, in Colombia. The nearest listed city is El Doncello, 29 km away.
Topography around Puerto Rico
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Puerto Rico.
Within 3 km, the terrain around Puerto Rico has only modest variations in elevation — a maximum elevation change of 240 m around an average of 266 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,995 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,253 m.
The land around Puerto Rico is covered by grassland (60%) and trees (33%) within 3 km, trees (58%) and grassland (41%) within 16 km, and trees (57%) and grassland (42%) within 80 km.
Colombia travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type A / B
- 120 / 240 V · 60 Hz
- Prices
- ≈ 38% of US
- price level, 2025
- GDP per capita
- $8,562
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 74%
- of population, 2024
- Homicide rate
- 24.9
- per 100k, 2023
- Road deaths
- 15.4
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 480
- Religion
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 Puerto Rico (1.91°, -75.1593°, elevation 259 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. 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).