SeasonMapSaint-Louis weather in December
Senegal
December in Saint-Louis: hot, dry, with poor air quality — fine if you can take poor air.
#5 of 12 months in Saint-Louis · #455 of 1383 destinations to visit in December · comfort 80/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Saint-Louis in December
No notes yet. Open Saint-Louis on the map to add the first one.
Saint-Louis climate normals — December
| Daytime high | 33°C / 91°F | 🥵 hot |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Feels like (high) | 31°C / 88°F | |
| Sea temperature | 23°C / 73°F | 🙂 pleasant |
| Rainfall | 1 mm / 0.1 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 41% | 🍃 comfortable |
| Dew point | 11°C / 51°F | |
| Sunshine | 9.6 h/day | |
| Daylight | 11.2 h | |
| Wind | 22 km/h / 14 mph | |
| Air quality (US AQI) | 103 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Saint-Louis in December
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 seasonschool holidays in 5 of the markets that fill it, an ordinary month(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).
Fair weatherSaint-Louis's weather peaks January–March.
Best weatherFair weatherToughest weather
What's on in Saint-Louis in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Djoudj bird season
1 Nov – 15 Apr · usuallyBirdlife seasonDjoudj, an hour north, is the first fresh water millions of European migrants meet after the Sahara. Pelicans and flamingos are on the flood plain through the northern winter; the boats go out at dawn. Source ↗
- Season
Saharan dust
1 Dec – 28 Feb · usuallyDust seasonDust off the desert crosses the river mouth through the cool months and drops the visibility for days at a time. It is why a dry January afternoon on the Pont Faidherbe can still look grey. Source ↗
Where is Saint-Louis?
Saint-Louis in December — FAQ
- Is December a good time to visit Saint-Louis?
- December in Saint-Louis: hot, dry, with poor air quality — fine if you can take poor air. It ranks #5 of 12 months for Saint-Louis on SeasonMap's comfort score (80/100).
- What is the weather like in Saint-Louis in December?
- In December, Saint-Louis averages a daily high of 32.8°C and a low of 18.1°C, with about 1.4 mm of rain over roughly 0.5 rainy days.
- What is the air quality in Saint-Louis in December?
- Saint-Louis has a mean US Air Quality Index of about 103 in December.