Kiserian climate — normals and trends
Kiserian (Kenya) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 19.5 °C and it receives 581 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 (21.2 °C on average) and the coldest is July (17.6 °C). Rainfall peaks in April.
Kiserian averages 0 frost days, 8 hot days (≥ 30 °C) and 115 rainy days per year.
Kiserian has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 33.3 °C (on 25 February 2005) and the coldest 8.2 °C (on 18 September 1970).
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
KiserianKajiado County
- coords
- -1.43°, 36.69°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.5°C
Average daily high
25.2°C
Average daily low
14.8°C
Annual rainfall
581mm
Sunshine / day
10.7h
Mean relative humidity
68%
Average peak wind
14.6km/h
Seasonal range
3.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
8 d/yr
Rainy days (≥ 1 mm)
115 d/yr
Annual snowfall
0.0 cm
Average feels-like high
25.4 °C
Average feels-like low
15.0 °C
Average peak gust
34.7 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
20.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.55 · 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
33.3 °C
25 February 2005
Coldest day
8.2 °C
18 September 1970
Wettest day
58 mm
14 May 1981
Windiest day
28.5 km/h
14 January 1957
Strongest gust
62.3 km/h
14 January 1957
Hottest feels-like
36.6 °C
25 February 2005
Coldest feels-like
6.3 °C
18 September 1970
Sunniest day
12.1 h
18 December 1942
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 | 26.9 °C | +0.4 °C | 54 mm | +20 mm |
| Feb | 28.5 °C | +1.0 °C | 2 mm | -30 mm |
| Mar | 28.3 °C | +1.0 °C | 33 mm | -21 mm |
| Apr | 26.1 °C | +0.7 °C | 127 mm | +5 mm |
| May | 24.8 °C | +0.9 °C | 131 mm | +28 mm |
| Jun | 23.9 °C | +0.7 °C | 44 mm | +7 mm |
| Jul | 23.5 °C | +0.7 °C | 16 mm | -3 mm |
| Aug | 23.6 °C | +0.1 °C | 53 mm | +36 mm |
| Sep | 27.1 °C | +1.7 °C | 6 mm | -8 mm |
| Oct | 26.8 °C | +0.5 °C | 42 mm | +14 mm |
| Nov | 26.6 °C | +1.8 °C | 17 mm | -59 mm |
| Dec | 26.8 °C | +1.6 °C | 60 mm | +14 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 Kiserian?
Kiserian has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 19.5 °C and it receives 581 mm of precipitation per year.
What is the hottest day ever recorded in Kiserian?
The hottest day measured in Kiserian between 1940 and 2025 was 25 February 2005, reaching 33.3 °C.
What is the coldest day in Kiserian?
The coldest day measured in Kiserian between 1940 and 2025 was 18 September 1970, at 8.2 °C.
Does it snow in Kiserian?
Almost never: Kiserian sees virtually no snow, with about 0 frost days per year.
Has the climate of Kiserian warmed?
Yes: Kiserian warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kiserian?
The wettest day measured in Kiserian between 1940 and 2025 was 14 May 1981, with 58 mm of rain in 24 hours.
What was the windiest day in Kiserian?
The windiest day measured in Kiserian between 1940 and 2025 was 14 January 1957, with winds reaching 28.5 km/h.
What is the warmest month in Kiserian?
The warmest month in Kiserian is March (21.2 °C on average); the coldest is July (17.6 °C).
How much does it rain in Kiserian?
Kiserian receives on average 581 mm of precipitation per year, spread over about 115 rainy days.
Is it sunny in Kiserian?
Kiserian gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
Are there tropical nights in Kiserian?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Kiserian.
What was the most extreme apparent temperature in Kiserian?
In Kiserian, between 1940 and 2025, the highest apparent temperature reached 36.6 °C on 25 February 2005, and the lowest was 6.3 °C on 18 September 1970.
Compare Kiserian with another city
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Nearby cities
The climate around Kiserian