Climate averages 1991–2020
San weather
by month.
See how the year changes. April has the highest average daily maximum; December has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year San averages a daytime high of 35.3°C and a nighttime low of 23.0°C, with about 526 mm of rain on roughly 78 days. April is the warmest month (average high 40.1°C) and August the coolest (30.7°C). August is the wettest month with 196 mm; December is the driest with under 1 mm.
The annual picture
A year in San
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
San climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.5°C17.7°C | 17.7°C | 1.0 | 0.2 | 11.411 h |
| February | 35.5°C20.0°C | 20.0°C | 0.1 | 0.0 | 11.712 h |
| March | 38.6°C23.3°C | 23.3°C | 1.0 | 0.4 | 12.112 h |
| April | 40.1°C26.4°C | 26.4°C | 8.8 | 2.6 | 12.412 h |
| May | 39.6°C27.6°C | 27.6°C | 20 | 5.9 | 12.713 h |
| June | 37.2°C26.5°C | 26.5°C | 43 | 10.2 | 12.913 h |
| July | 33.0°C24.3°C | 24.3°C | 123 | 17.2 | 12.813 h |
| August | 30.7°C23.2°C | 23.2°C | 196 | 20.8 | 12.613 h |
| September | 32.0°C23.5°C | 23.5°C | 107 | 14.8 | 12.212 h |
| October | 35.4°C24.0°C | 24.0°C | 26 | 5.8 | 11.812 h |
| November | 35.8°C21.0°C | 21.0°C | 0.5 | 0.2 | 11.512 h |
| December | 33.2°C18.4°C | 18.4°C | 0 | 0.0 | 11.411 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
Nearby cities
- KoutialaMali · 118 kmHigh 34.2°C · Low 22.5°C · 689 mm rain a year
- SégouMali · 148 kmHigh 34.7°C · Low 22.9°C · 506 mm rain a year
- MoptiMali · 153 kmHigh 36.2°C · Low 23.4°C · 333 mm rain a year
- SikassoMali · 235 kmHigh 33.3°C · Low 22.1°C · 937 mm rain a year
- Bobo-DioulassoBurkina Faso · 244 kmHigh 32.9°C · Low 21.7°C · 806 mm rain a year
- HoundéBurkina Faso · 250 kmHigh 34.0°C · Low 22.4°C · 727 mm rain a year
- OuahigouyaBurkina Faso · 270 kmHigh 35.3°C · Low 22.3°C · 437 mm rain a year
- BanforaBurkina Faso · 296 kmHigh 33.4°C · Low 22.3°C · 859 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC±0, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 13.30°, -4.90° (1 km from the city centre). Rain comes from the 0.25° cell at 13.25°, -5.00°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.