SeasonMapSaint-Louis weather in August
Senegal
August in Saint-Louis: hot, rainy, with muggy air — a good time to visit.
#11 of 12 months in Saint-Louis · #1012 of 1383 destinations to visit in August · comfort 65/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Saint-Louis in August
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Saint-Louis climate normals — August
| Daytime high | 30°C / 86°F | 🥵 hot |
|---|---|---|
| Nighttime low | 26°C / 79°F | |
| Sea temperature | 29°C / 84°F | ♨️ bath-warm |
| Rainfall | 83 mm / 3.3 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 24°C / 75°F | |
| Sunshine | 10.6 h/day | |
| Daylight | 12.6 h | |
| Wind | 21 km/h / 13 mph | |
| Air quality (US AQI) | 58 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Saint-Louis 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.
Quietschool holidays in 4 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Saint-Louis'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).
Toughest weatherSaint-Louis's best weather comes in January, March and April — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
Where is Saint-Louis?
Saint-Louis in August — FAQ
- Is August a good time to visit Saint-Louis?
- August in Saint-Louis: hot, rainy, with muggy air — a good time to visit. It ranks #11 of 12 months for Saint-Louis on SeasonMap's comfort score (65/100).
- What is the weather like in Saint-Louis in August?
- In August, Saint-Louis averages a daily high of 30.2°C and a low of 25.9°C, with about 82.9 mm of rain over roughly 8.8 rainy days.
- What is the air quality in Saint-Louis in August?
- Saint-Louis has a mean US Air Quality Index of about 58 in August.