Climate averages 1991–2020
Saint-Louis weather
in December.
A hot, very dry month: the 7th warmest and the 7th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Saint-Louis: daytime highs average 28.6°C and nights cool to about 20.2°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 1.7 mm of rain on fewer than one day, which makes December a very dry month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 12 min on an average December day.
The nearest other city in this atlas is Louga (53 km away). In December its highs average 32.6°C, 4.1°C warmer than Saint-Louis, with 1.5 mm of rain.
Among the 16 cities listed in Senegal, Saint-Louis ranks 15th of 16 for the warmest December highs and joint 10th of 16 for the driest December (rainfall, lowest first). The mean December high of those 16 cities is 31.9°C; Saint-Louis is 3.3°C cooler than that mean.
From December to January, average highs fall by 1.5°C to 27.0°C, and monthly rainfall rises from 1.7 mm to 2.7 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Saint-Louis climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.0°C18.4°C | 18.4°C | 2.7 | 0.2 | 11.311 h |
| February | 27.4°C18.9°C | 18.9°C | 1.4 | 0.2 | 11.612 h |
| March | 27.9°C19.3°C | 19.3°C | 0.1 | 0.0 | 12.012 h |
| April | 27.6°C19.3°C | 19.3°C | 0.1 | 0.0 | 12.512 h |
| May | 28.1°C20.5°C | 20.5°C | 0 | 0.0 | 12.913 h |
| June | 28.9°C22.7°C | 22.7°C | 0.8 | 0.3 | 13.113 h |
| July | 29.5°C24.6°C | 24.6°C | 11 | 2.0 | 13.013 h |
| August | 30.1°C25.6°C | 25.6°C | 57 | 7.7 | 12.713 h |
| September | 30.9°C26.1°C | 26.1°C | 52 | 7.2 | 12.212 h |
| October | 32.1°C25.6°C | 25.6°C | 13 | 2.1 | 11.812 h |
| November | 31.0°C23.2°C | 23.2°C | 0.3 | 0.1 | 11.411 h |
| December, selected | 28.6°C20.2°C | 20.2°C | 1.7 | 0.3 | 11.211 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Louga in DecemberSenegal · 53 kmHigh 32.6°C · Low 18.9°C · 1.5 mm rain
- Richard-Toll in DecemberSenegal · 98 kmHigh 32.2°C · Low 19.4°C · 2.1 mm rain
- Tivaouane in DecemberSenegal · 124 kmHigh 31.1°C · Low 18.8°C · 1.7 mm rain
- Touba in DecemberSenegal · 144 kmHigh 32.5°C · Low 18.5°C · 1.7 mm rain
- Thiès in DecemberSenegal · 144 kmHigh 32.3°C · Low 18.7°C · 1.4 mm rain
- Thiès Nones in DecemberSenegal · 146 kmHigh 31.3°C · Low 19.4°C · 1.4 mm rain
- Mbaké in DecemberSenegal · 150 kmHigh 32.6°C · Low 18.4°C · 1.7 mm rain
- Diourbel in DecemberSenegal · 155 kmHigh 32.8°C · Low 18.9°C · 1.8 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Saint-Louis) is explained once on the Saint-Louis year overview and on the Sources, method and limits page.