Climate and average weather in El Retén
In El Retén, the weather is humid, sweltering, wet, and mostly clear and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around October.
Over the course of the year, the temperature in El Retén typically varies from 23°C to 36°C, and is rarely below 21°C or above 39°C. February is the hottest month of the year, while November is the coldest.
Based on the travel score, the best time of year to visit El Retén for warm-weather activities is from mid November to late January.
- Hottest
- Feb
- 36°
- Coldest
- Nov
- 23°
- Wettest
- Oct
- 242 mm
- Driest
- Jan
- 7 mm
- Rain / yr
- 1046 mm
- 140 wet days
- Daylight
- 11.4–12.6 h
- shortest–longest
- Elevation
- 24 m
- 10.6°N
- Clearest
- Jan
- 33% cloud
El Retén 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 mid November to late January.
Temperature through the year
Daily average highs and lows in El Retén, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
Temperatures in El Retén stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 36°C and low of 24°C; the coolest is November, with an average low of 23°C and high of 32°C.
Days typically run about 10°C warmer than nights, with the widest day–night swing (around 12°C) in February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 35 | 36 | 36 | 35 | 34 | 33 | 35 | 35 | 33 | 32 | 32 | 33 |
| Avg low (°C) | 23 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 23 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 35 | 23 |
| Feb | 36 | 24 |
| Mar | 36 | 25 |
| Apr | 35 | 25 |
| May | 34 | 25 |
| Jun | 33 | 25 |
| Jul | 35 | 25 |
| Aug | 35 | 25 |
| Sep | 33 | 24 |
| Oct | 32 | 24 |
| Nov | 32 | 23 |
| Dec | 33 | 23 |
How hot and cold El Retén 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, El Retén feels like about 42°C (around May 14). Nearly every day a year carries some heat stress, and 242 of them tip into dangerous heat (feels-like above 39°C), peaking in May.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 38 | 39 | 40 | 41 | 42 | 41 | 41 | 41 | 41 | 39 | 38 | 38 |
| Air high (°C) | 35 | 36 | 36 | 35 | 34 | 33 | 35 | 35 | 33 | 32 | 32 | 33 |
| Feels-like low (°C) | 23 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 23 | 23 |
| Air low (°C) | 23 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 23 | 23 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 38 | 35 | 23 | 23 |
| Feb | 39 | 36 | 24 | 24 |
| Mar | 40 | 36 | 24 | 25 |
| Apr | 41 | 35 | 25 | 25 |
| May | 42 | 34 | 25 | 25 |
| Jun | 41 | 33 | 25 | 25 |
| Jul | 41 | 35 | 25 | 25 |
| Aug | 41 | 35 | 25 | 25 |
| Sep | 41 | 33 | 24 | 24 |
| Oct | 39 | 32 | 24 | 24 |
| Nov | 38 | 32 | 23 | 23 |
| Dec | 38 | 33 | 23 | 23 |
Average hourly temperature in El Retén
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 February afternoons, near 36°C, and coldest before dawn in November, near 23°C.
El Retén 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 | 35° / 23° | 7 | 1.5 | 11.4 | 3.4 |
| Feb | 36° / 24° | 7 | 1.6 | 11.6 | 2.6 |
| Mar | 36° / 25° | 22 | 4.8 | 11.9 | 2.3 |
| Apr | 35° / 25° | 73 | 13.8 | 12.2 | 2.2 |
| May | 34° / 25° | 160 | 19.9 | 12.5 | 2.3 |
| Jun | 33° / 25° | 81 | 13.8 | 12.6 | 2.7 |
| Jul | 35° / 25° | 50 | 8.3 | 12.6 | 2.6 |
| Aug | 35° / 25° | 69 | 12 | 12.3 | 2.4 |
| Sep | 33° / 24° | 131 | 19 | 12.1 | 2.5 |
| Oct | 32° / 24° | 242 | 22.7 | 11.8 | 2.7 |
| Nov | 32° / 23° | 172 | 17.1 | 11.5 | 3.3 |
| Dec | 33° / 23° | 34 | 5.8 | 11.4 | 3.9 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
El Retén gets about 1046 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.
The wetter season lasts 3.5 months, from around Aug 15 to Nov 29, peaking in October at about 75% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 22.
October is the wettest month by volume, with 242 mm over about 23 wet days; January is the driest, with 7 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 5 | 6 | 16 | 45 | 63 | 46 | 28 | 39 | 62 | 73 | 56 | 20 |
| Rain days | 2 | 2 | 5 | 14 | 20 | 14 | 8 | 12 | 19 | 23 | 17 | 6 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 5 | 2 |
| Feb | 6 | 2 |
| Mar | 16 | 5 |
| Apr | 45 | 14 |
| May | 63 | 20 |
| Jun | 46 | 14 |
| Jul | 28 | 8 |
| Aug | 39 | 12 |
| Sep | 62 | 19 |
| Oct | 73 | 23 |
| Nov | 56 | 17 |
| Dec | 20 | 6 |
Monthly rainfall
Over a full year, El Retén collects about 1046 mm of rain across 140 wet days — roughly 87 mm in an average month.
It doesn’t fall evenly. October is the wettest month with 242 mm, while January is the driest at just 7 mm. The three wettest months alone bring about 55% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 7 | 7 | 22 | 73 | 160 | 81 | 50 | 69 | 131 | 242 | 172 | 34 |
| Rain days | 2 | 2 | 5 | 14 | 20 | 14 | 8 | 12 | 19 | 23 | 17 | 6 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 7 | 2 |
| Feb | 7 | 2 |
| Mar | 22 | 5 |
| Apr | 73 | 14 |
| May | 160 | 20 |
| Jun | 81 | 14 |
| Jul | 50 | 8 |
| Aug | 69 | 12 |
| Sep | 131 | 19 |
| Oct | 242 | 23 |
| Nov | 172 | 17 |
| Dec | 34 | 6 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In El Retén, 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 23 and lasts for 4.5 months, ending around April 7. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 80% of the time on average.
The cloudier part of the year begins around April 8 and lasts for 7.5 months, ending around November 22. The cloudiest month is August, when it is overcast or mostly cloudy 93% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 80 | 77 | 59 | 23 | 9 | 12 | 11 | 7 | 8 | 10 | 25 | 56 |
| Cloudier (%) | 20 | 23 | 41 | 77 | 91 | 88 | 89 | 93 | 92 | 90 | 75 | 44 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 80 | 20 |
| Feb | 77 | 23 |
| Mar | 59 | 41 |
| Apr | 23 | 77 |
| May | 9 | 91 |
| Jun | 12 | 88 |
| Jul | 11 | 89 |
| Aug | 7 | 93 |
| Sep | 8 | 92 |
| Oct | 10 | 90 |
| Nov | 25 | 75 |
| Dec | 56 | 44 |
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 May 27, brings about 12 h 36 min of light; the shortest, around January 1, only 11 h 24 min — a swing of roughly 1 h 12 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.4 | 11.6 | 11.9 | 12.2 | 12.5 | 12.6 | 12.6 | 12.3 | 12.1 | 11.8 | 11.5 | 11.4 |
| Sunrise (AM) | 6:23 | 6:22 | 6:09 | 5:50 | 5:39 | 5:39 | 5:46 | 5:51 | 5:50 | 5:49 | 5:57 | 6:12 |
| Sunset (PM) | 5:50 | 6:01 | 6:05 | 6:04 | 6:08 | 6:16 | 6:20 | 6:12 | 5:53 | 5:35 | 5:27 | 5:35 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 11.4 | 6:23 | 5:50 |
| Feb | 11.6 | 6:22 | 6:01 |
| Mar | 11.9 | 6:09 | 6:05 |
| Apr | 12.2 | 5:50 | 6:04 |
| May | 12.5 | 5:39 | 6:08 |
| Jun | 12.6 | 5:39 | 6:16 |
| Jul | 12.6 | 5:46 | 6:20 |
| Aug | 12.3 | 5:51 | 6:12 |
| Sep | 12.1 | 5:50 | 5:53 |
| Oct | 11.8 | 5:49 | 5:35 |
| Nov | 11.5 | 5:57 | 5:27 |
| Dec | 11.4 | 6:12 | 5:35 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
El Retén averages about 6 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 20 days.
The sunnier stretch runs 4.2 months, from around Nov 28 to Apr 5. The sunniest month is January, with roughly 19 sunny days (bright).
The greyest month is August, down near 0 sunny days — about 98% fewer than the January peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 20 | 17 | 13 | 4 | 1 | 1 | 1 | 0 | 1 | 1 | 4 | 12 |
| Sky | Bright | Bright | Mixed | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Mixed |
| Sunny days | Sky | |
|---|---|---|
| Jan | 20 | Bright |
| Feb | 17 | Bright |
| Mar | 13 | Mixed |
| Apr | 4 | Gloomy |
| May | 1 | Gloomy |
| Jun | 1 | Gloomy |
| Jul | 1 | Gloomy |
| Aug | 0 | Gloomy |
| Sep | 1 | Gloomy |
| Oct | 1 | Gloomy |
| Nov | 4 | Gloomy |
| Dec | 12 | Mixed |
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.
El Retén 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 March, when it feels muggy, oppressive or miserable about 95% of the time. Even in February, the mildest month, the air is dry or comfortable only 2% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 8 | 13 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Muggy (%) | 39 | 41 | 28 | 8 | 0 | 1 | 4 | 2 | 0 | 0 | 1 | 16 |
| Oppressive (%) | 50 | 42 | 61 | 63 | 23 | 31 | 67 | 54 | 33 | 35 | 46 | 59 |
| Miserable (%) | 2 | 2 | 6 | 29 | 77 | 68 | 29 | 44 | 67 | 65 | 53 | 22 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| Jan | 1 | 8 | 39 | 50 | 2 |
| Feb | 2 | 13 | 41 | 42 | 2 |
| Mar | 0 | 4 | 28 | 61 | 6 |
| Apr | 0 | 0 | 8 | 63 | 29 |
| May | 0 | 0 | 0 | 23 | 77 |
| Jun | 0 | 0 | 1 | 31 | 68 |
| Jul | 0 | 0 | 4 | 67 | 29 |
| Aug | 0 | 0 | 2 | 54 | 44 |
| Sep | 0 | 0 | 0 | 33 | 67 |
| Oct | 0 | 0 | 0 | 35 | 65 |
| Nov | 0 | 0 | 1 | 46 | 53 |
| Dec | 0 | 2 | 16 | 59 | 22 |
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 El Retén is steady company: average speeds sit near 5 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 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 5 | calm |
| Feb | 5 | calm |
| Mar | 5 | calm |
| Apr | 5 | calm |
| May | 5 | calm |
| Jun | 5 | calm |
| Jul | 5 | calm |
| Aug | 5 | calm |
| Sep | 5 | calm |
| Oct | 5 | calm |
| Nov | 5 | calm |
| Dec | 5 | calm |
Hazard calendar for El Retén
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
El Retén's rainy season runs September–November, when most of the year's rain falls.
Best time to visit El Retén
To characterize how pleasant the weather is in El Retén throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around mid January, El Retén 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 El Retén for general outdoor tourist activities is from mid November to late January, with a peak score in the third week of December.
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) | 3.4 | 2.6 | 2.3 | 2.2 | 2.3 | 2.7 | 2.6 | 2.4 | 2.5 | 2.7 | 3.3 | 3.9 |
| Rating | poor | poor | poor | poor | poor | poor | poor | poor | poor | poor | poor | fair |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 3.4 | poor |
| Feb | 2.6 | poor |
| Mar | 2.3 | poor |
| Apr | 2.2 | poor |
| May | 2.3 | poor |
| Jun | 2.7 | poor |
| Jul | 2.6 | poor |
| Aug | 2.4 | poor |
| Sep | 2.5 | poor |
| Oct | 2.7 | poor |
| Nov | 3.3 | poor |
| Dec | 3.9 | 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 El Retén for hot-weather activities is from late November to late February, with a peak score in the first 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 El Retén, 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.
El Retén packs about the same all year — highs hold near 36°C. Across the year the things worth having are light clothes, sun protection and rain gear.
In February, El Retén sees daytime highs around 36°C and nights near 24°C. Pack light clothes. Worth having: sun protection.
Sea temperature near El Retén
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
The sea at the nearest coast (about 32 km away) is warmest in September at about 29°C and coldest in February near 26°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) | 26 | 26 | 26 | 27 | 28 | 29 | 28 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 26 | Warm |
| Mar | 26 | Warm |
| Apr | 27 | Warm |
| May | 28 | Warm |
| Jun | 29 | Tropical |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index (midday) in El Retén 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 El Retén peaks around June 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 9 (very 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) | 11 | 13 | 12 | 12 | 12 | 13 | 11 | 12 | 12 | 11 | 10 | 9 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 13 | Extreme |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 12 | Extreme |
| Jun | 13 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 10 | Very high |
| Dec | 9 | Very high |
Average hourly UV index in El Retén
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 June 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) | 7 | 7.5 | 7.5 | 8 | 8 | 8.5 | 8 | 8 | 8 | 7.5 | 7 | 7 |
| UV ≥ 6 (h/day) | 5 | 6 | 6 | 6 | 6 | 6.5 | 6 | 6 | 6 | 5.5 | 5 | 4.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 7 | 5 |
| Feb | 7.5 | 6 |
| Mar | 7.5 | 6 |
| Apr | 8 | 6 |
| May | 8 | 6 |
| Jun | 8.5 | 6.5 |
| Jul | 8 | 6 |
| Aug | 8 | 6 |
| Sep | 8 | 6 |
| Oct | 7.5 | 5.5 |
| Nov | 7 | 5 |
| Dec | 7 | 4.5 |
Air quality in El Retén 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 El Retén is worst in March — around 51 µg/m³ PM2.5 (poor), about 3.8× the cleanest month (December, 14 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) | 15 | 26 | 51 | 29 | 25 | 24 | 24 | 20 | 17 | 16 | 14 | 14 |
| Level | Moderate | Moderate | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 26 | Moderate |
| Mar | 51 | Poor |
| Apr | 29 | Moderate |
| May | 25 | Moderate |
| Jun | 24 | Moderate |
| Jul | 24 | Moderate |
| Aug | 20 | Moderate |
| Sep | 17 | Moderate |
| Oct | 16 | Moderate |
| Nov | 14 | Moderate |
| Dec | 14 | Moderate |
Growing season
El Retén 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. El Retén banks about 6,924 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around March.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 581 | 552 | 625 | 598 | 592 | 570 | 609 | 607 | 558 | 548 | 526 | 557 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 581 |
| Feb | 552 |
| Mar | 625 |
| Apr | 598 |
| May | 592 |
| Jun | 570 |
| Jul | 609 |
| Aug | 607 |
| Sep | 558 |
| Oct | 548 |
| Nov | 526 |
| Dec | 557 |
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.
El Retén receives about 5.2 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.5 and 6.0 kWh/m².
The brighter stretch of the year lasts 3.9 months, from around Jan 2 to Apr 29. The brightest month is March, averaging about 5.9 kWh/m² (bright).
The dimmest month is November, down near 4.5 kWh/m² — roughly 24% less than the March peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.4 | 5.8 | 6.0 | 5.5 | 5.0 | 5.1 | 5.1 | 5.1 | 5.0 | 4.7 | 4.5 | 4.8 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 5.4 | Bright |
| Feb | 5.8 | Bright |
| Mar | 6.0 | Bright |
| Apr | 5.5 | Bright |
| May | 5.0 | Bright |
| Jun | 5.1 | Bright |
| Jul | 5.1 | Bright |
| Aug | 5.1 | Bright |
| Sep | 5.0 | Bright |
| Oct | 4.7 | Bright |
| Nov | 4.5 | Bright |
| Dec | 4.8 | Bright |
Where is El Retén?
El Retén sits at 10.6°N, 74.3°W, 24 m above sea level, in Colombia. The nearest listed city is Aracataca, 9.0 km away.
Topography around El Retén
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of El Retén.
Within 3 km, the terrain around El Retén has only modest variations in elevation — a maximum elevation change of 23 m around an average of 27 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 115 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,613 m.
The land around El Retén is covered by trees (75%) and grassland (20%) within 3 km, grassland (54%) and trees (41%) within 16 km, and trees (41%) and grassland (37%) 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 El Retén (10.6113°, -74.2682°, 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. 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).