Mombasa climate — normals and trends
Mombasa (Kenya) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.0 °C and it receives 928 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 March (27.8 °C on average) and the coldest is July (24.2 °C). Rainfall peaks in May.
Mombasa averages 0 frost days, 100 hot days (≥ 30 °C) and 204 rainy days per year.
Mombasa has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.7 °C (on 17 March 1941) and the coldest 20.1 °C (on 12 August 1968).
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
MombasaMombasa County
- coords
- -4.05°, 39.66°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.0°C
Average daily high
28.5°C
Average daily low
24.2°C
Annual rainfall
928mm
Sunshine / day
11.2h
Mean relative humidity
79%
Average peak wind
22.4km/h
Seasonal range
3.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
100 d/yr
Rainy days (≥ 1 mm)
204 d/yr
Annual snowfall
0.0 cm
Average feels-like high
31.8 °C
Average feels-like low
27.1 °C
Average peak gust
40.2 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
20.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.72 · 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
35.7 °C
17 March 1941
Coldest day
20.1 °C
12 August 1968
Wettest day
292 mm
9 May 2017
Windiest day
42.3 km/h
9 August 1961
Strongest gust
72.0 km/h
9 August 1961
Hottest feels-like
41.0 °C
12 February 1998
Coldest feels-like
19.4 °C
30 July 1975
Sunniest day
12.2 h
6 January 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 30.9 °C | +0.6 °C | 6 mm | -17 mm |
| Feb | 31.1 °C | +0.4 °C | 4 mm | -12 mm |
| Mar | 31.7 °C | +0.9 °C | 56 mm | 0 mm |
| Apr | 29.4 °C | +0.1 °C | 237 mm | +81 mm |
| May | 28.3 °C | +0.6 °C | 223 mm | +21 mm |
| Jun | 27.4 °C | +0.5 °C | 120 mm | +29 mm |
| Jul | 26.7 °C | +0.6 °C | 63 mm | -13 mm |
| Aug | 26.8 °C | +0.5 °C | 43 mm | -15 mm |
| Sep | 27.9 °C | +0.9 °C | 29 mm | -21 mm |
| Oct | 28.7 °C | +0.8 °C | 258 mm | +185 mm |
| Nov | 29.6 °C | +0.6 °C | 34 mm | -37 mm |
| Dec | 30.7 °C | +0.8 °C | 38 mm | -19 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 Mombasa?
Mombasa has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.0 °C and it receives 928 mm of precipitation per year.
What is the hottest day ever recorded in Mombasa?
The hottest day measured in Mombasa between 1940 and 2025 was 17 March 1941, reaching 35.7 °C.
What is the coldest day in Mombasa?
The coldest day measured in Mombasa between 1940 and 2025 was 12 August 1968, at 20.1 °C.
Does it snow in Mombasa?
Almost never: Mombasa sees virtually no snow, with about 0 frost days per year.
Has the climate of Mombasa warmed?
Yes: Mombasa warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mombasa?
The wettest day measured in Mombasa between 1940 and 2025 was 9 May 2017, with 292 mm of rain in 24 hours.
What was the windiest day in Mombasa?
The windiest day measured in Mombasa between 1940 and 2025 was 9 August 1961, with winds reaching 42.3 km/h.
What is the warmest month in Mombasa?
The warmest month in Mombasa is March (27.8 °C on average); the coldest is July (24.2 °C).
How much does it rain in Mombasa?
Mombasa receives on average 928 mm of precipitation per year, spread over about 204 rainy days.
Is it sunny in Mombasa?
Mombasa gets on average 11.2 hours of sunshine per day, roughly 4,088 hours per year over 1940-2025.
Are there tropical nights in Mombasa?
Yes: Mombasa has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mombasa?
In Mombasa, between 1940 and 2025, the highest apparent temperature reached 41.0 °C on 12 February 1998, and the lowest was 19.4 °C on 30 July 1975.
Compare Mombasa with another city
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Nearby cities
The climate around Mombasa