San climate — normals and trends
San (Mali) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 28.3 °C and it receives 595 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is May (32.8 °C on average) and the coldest is January (24.1 °C). Rainfall peaks in August.
San averages 0 frost days, 325 hot days (≥ 30 °C) and 88 rainy days per year.
San has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The hottest day of the period reached 44.9 °C (on 3 April 2024) and the coldest 9.7 °C (on 22 December 1962).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
SanSégou
- coords
- 13.30°, -4.90°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
28.3°C
Average daily high
34.5°C
Average daily low
22.6°C
Annual rainfall
595mm
Sunshine / day
10.9h
Mean relative humidity
45%
Average peak wind
13.7km/h
Seasonal range
8.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
325 d/yr
Rainy days (≥ 1 mm)
88 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.1 °C
Average feels-like low
22.9 °C
Average peak gust
31.3 km/h
Tropical nights (≥ 20 °C)
279 d/yr
Solar radiation
21.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.66 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
44.9 °C
3 April 2024
Coldest day
9.7 °C
22 December 1962
Wettest day
179 mm
13 August 2024
Windiest day
30.4 km/h
13 May 1947
Strongest gust
59.4 km/h
15 April 2020
Hottest feels-like
47.2 °C
30 May 2015
Coldest feels-like
6.3 °C
30 January 1961
Sunniest day
12.8 h
23 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 31.8 °C | 0.0 °C | 0 mm | -1 mm |
| Feb | 34.6 °C | -0.2 °C | 0 mm | -0 mm |
| Mar | 40.1 °C | +2.4 °C | 2 mm | -0 mm |
| Apr | 40.3 °C | +1.1 °C | 5 mm | -5 mm |
| May | 38.7 °C | -0.1 °C | 4 mm | -22 mm |
| Jun | 36.2 °C | +0.2 °C | 29 mm | -28 mm |
| Jul | 32.7 °C | +0.5 °C | 106 mm | -38 mm |
| Aug | 30.6 °C | +0.1 °C | 134 mm | -69 mm |
| Sep | 31.9 °C | +0.3 °C | 158 mm | +38 mm |
| Oct | 36.4 °C | +1.8 °C | 15 mm | -16 mm |
| Nov | 36.3 °C | +1.3 °C | 0 mm | -1 mm |
| Dec | 31.8 °C | -0.2 °C | 13 mm | +12 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of San?
San has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 28.3 °C and it receives 595 mm of precipitation per year.
What is the hottest day ever recorded in San?
The hottest day measured in San between 1940 and 2025 was 3 April 2024, reaching 44.9 °C.
What is the coldest day in San?
The coldest day measured in San between 1940 and 2025 was 22 December 1962, at 9.7 °C.
Does it snow in San?
Almost never: San sees virtually no snow, with about 0 frost days per year.
Has the climate of San warmed?
Yes: San warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in San?
The wettest day measured in San between 1940 and 2025 was 13 August 2024, with 179 mm of rain in 24 hours.
What was the windiest day in San?
The windiest day measured in San between 1940 and 2025 was 13 May 1947, with winds reaching 30.4 km/h.
What is the warmest month in San?
The warmest month in San is May (32.8 °C on average); the coldest is January (24.1 °C).
How much does it rain in San?
San receives on average 595 mm of precipitation per year, spread over about 88 rainy days.
Is it sunny in San?
San gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in San?
Yes: San has on average 279 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in San?
In San, between 1940 and 2025, the highest apparent temperature reached 47.2 °C on 30 May 2015, and the lowest was 6.3 °C on 30 January 1961.
Compare San with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San