SeasonMapSan Andrés weather in August
Colombia
August in San Andrés: sweltering, soaked, with muggy air — fine if you can take 25 rainy days.
#8 of 12 months in San Andrés · #891 of 1383 destinations to visit in August · comfort 72/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on San Andrés in August
Other months in San Andrés
San Andrés's forum calls April hot and sunny, though high season with more tourists and higher prices than the quieter shoulder months. Regulars are consistent that the typical pattern is sunny mornings turning to cloud or rain in the afternoon, and flag the island's weather as genuinely hard to forecast given its exposure to El Niño/La Niña swings — March is often cited as the calmer, cheaper alternative with similarly good weather.
Add your own note from San Andrés's card on the map.
San Andrés climate normals — August
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 26°C / 79°F | |
| Feels like (high) | 36°C / 97°F | |
| Sea temperature | 29°C / 85°F | ♨️ bath-warm |
| Rainfall | 208 mm / 8.2 in | ⛈ soaked |
| Rainy days | 25 days | |
| Humidity | 84% | 💦 very humid |
| Dew point | 25°C / 77°F | |
| Sunshine | 10 h/day | |
| Daylight | 12.5 h | |
| Wind | 26 km/h / 16 mph | |
| Air quality (US AQI) | 52 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in San Andrés in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonan ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for San Andrés's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherSan Andrés's weather peaks February–April, best around March.
Best weatherFair weatherToughest weather
What's on in San Andrés in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Rule
Tourist card required to land
1 Jan – 31 DecEveryone who is not a registered islander buys a tourist card before boarding, Colombians included, and it is checked at the airport door. The price is set each January and it is not optional. Source ↗
- Hazard
Sargassum on the windward beaches
1 Apr – 31 Aug · usuallySargassum seasonSome years the Atlantic drift piles brown weed on the east-facing beaches for weeks and the hotels rake it off each morning. Bad years and clear years alternate with no useful warning. Source ↗
- Hazard
Caribbean hurricane season
1 Jun – 30 NovDirect hits are rare but not unheard of here, and the season's real effect is a week of swell, rain and cancelled boats to Providencia. September and October are the months that matter. Source ↗
- Season
Wet season
MonsoonRisk25 rainy days and about 208 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Nearby, and something's on
Within 300 km of San Andrés — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is San Andrés?
San Andrés in August — FAQ
- Is August a good time to visit San Andrés?
- August in San Andrés: sweltering, soaked, with muggy air — fine if you can take 25 rainy days. It ranks #8 of 12 months for San Andrés on SeasonMap's comfort score (72/100).
- What is the weather like in San Andrés in August?
- In August, San Andrés averages a daily high of 31.2°C and a low of 26.1°C, with about 207.5 mm of rain over roughly 25.2 rainy days.
- What is the air quality in San Andrés in August?
- San Andrés has a mean US Air Quality Index of about 52 in August.
Other months in San Andrés
Compare San Andrés in August
Warmer or cooler than San Andrés in August
Similar destinations in South America — August
Within 300 km: Tortuguero's Green turtle nesting on 1 Jul – 31 Oct.