San Andrés in Fall
In fall (September, October and November), San Andrés sees average daytime highs around 28°C and overnight lows near 26°C, with 782 mm of rain over about 80 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across fall, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 19% of the time across fall, and the air most often feels miserable.
Fall is San Andrés's weakest season of the year to visit on our travel score. San Andrés has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see San Andrés's year-round climate.
- Avg daytime high
- 28°C
- 2nd-warmest season
- Avg overnight low
- 26°C
- Rainfall
- 782 mm
- 80 wet days
- Avg wind
- 18 km/h
- Travel score
- 3.8
- weakest season of the year
- Months
- Sep · Oct · Nov
Temperature in San Andrés in Fall
Across fall, daytime highs hold fairly steady around 28°C.
A typical fall day in San Andrés reaches about 28°C and drops to 26°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in San Andrés
Once humidity and wind are folded in, fall brings about 37 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
San Andrés weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 25° | 57 | 15.6 | 11.3 | 6.2 |
| Feb | 27° / 25° | 27 | 9.3 | 11.6 | 7.1 |
| Mar | 27° / 26° | 18 | 6.5 | 11.9 | 7.6 |
| Apr | 27° / 26° | 27 | 6.8 | 12.3 | 7.2 |
| May | 28° / 26° | 145 | 19.1 | 12.6 | 5.0 |
| Jun | 28° / 26° | 245 | 25.4 | 12.7 | 3.9 |
| Jul | 28° / 26° | 247 | 25.4 | 12.7 | 4.0 |
| Aug | 28° / 26° | 230 | 26.1 | 12.4 | 3.9 |
| Sep | 28° / 26° | 222 | 26.2 | 12.1 | 3.7 |
| Oct | 28° / 26° | 298 | 28.1 | 11.7 | 3.7 |
| Nov | 27° / 26° | 262 | 25.3 | 11.4 | 4.1 |
| Dec | 27° / 26° | 114 | 20.4 | 11.3 | 5.2 |
Cloud cover in Fall
The sky is clear or mostly clear about 19% of the time across fall.
Chance of precipitation in Fall
San Andrés gets around 782 mm of rain over 80 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 18 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 12 min in early September to 11 h 18 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.9 kWh/m².
Hazard calendar for San Andrés
In fall, San Andrés overlaps its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.
San Andrés sits in the Atlantic hurricane belt; the season peaks August–October.
San Andrés's rainy season runs May–November, when most of the year's rain falls.
Is fall a good time to visit San Andrés?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in San Andrés.
What to pack for San Andrés in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, San Andrés sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection and a windbreaker. About 80 days see rain.
Sea temperature near San Andrés in Fall
The nearest coast averages about 29°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
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 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 28 | Warm |
| May | 28 | Tropical |
| Jun | 28 | Tropical |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 28 | Tropical |
| Dec | 28 | Warm |
UV index in San Andrés in Fall
Clear-sky midday UV across fall averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in San Andrés peaks around April 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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) | 10 | 12 | 13 | 13 | 12 | 13 | 11 | 12 | 12 | 11 | 10 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | 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 |
Air quality in San Andrés in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in San Andrés is worst in July — around 35 µg/m³ PM2.5 (moderate), about 4.4× the cleanest month (November, 8 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) | 10 | 12 | 11 | 15 | 24 | 31 | 35 | 26 | 16 | 11 | 8 | 11 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 12 | Good |
| Mar | 11 | Good |
| Apr | 15 | Moderate |
| May | 24 | Moderate |
| Jun | 31 | Moderate |
| Jul | 35 | Moderate |
| Aug | 26 | Moderate |
| Sep | 16 | Moderate |
| Oct | 11 | Good |
| Nov | 8 | Good |
| Dec | 11 | Good |
Where is San Andrés?
San Andrés sits at 12.6°N, 81.7°W, in Colombia. The nearest listed city is Pearl Lagoon, 216 km away.
Topography around San Andrés
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Andrés.
Within 3 km, the terrain around San Andrés has only modest variations in elevation — a maximum elevation change of 91 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 91 m; within 80 km, only modest variations in elevation — a maximum elevation change of 86 m.
The land around San Andrés is covered by water (70%) within 3 km, water (97%) within 16 km, and water (100%) 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 San Andrés (12.5786°, -81.6997°), 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.