Voi climate — normals and trends
Voi (Kenya) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 23.1 °C and it receives 575 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 February (25.0 °C on average) and the coldest is July (21.1 °C). Rainfall peaks in April.
Voi averages 0 frost days, 89 hot days (≥ 30 °C) and 124 rainy days per year.
Voi 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 37.5 °C (on 24 March 1941) and the coldest 12.9 °C (on 8 September 1984).
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
VoiTaita Taveta
- coords
- -3.40°, 38.56°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
23.1°C
Average daily high
28.4°C
Average daily low
19.1°C
Annual rainfall
575mm
Sunshine / day
10.7h
Mean relative humidity
74%
Average peak wind
15.2km/h
Seasonal range
3.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
89 d/yr
Rainy days (≥ 1 mm)
124 d/yr
Annual snowfall
0.0 cm
Average feels-like high
30.1 °C
Average feels-like low
21.2 °C
Average peak gust
37.9 km/h
Tropical nights (≥ 20 °C)
138 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 = 0.69 · 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
37.5 °C
24 March 1941
Coldest day
12.9 °C
8 September 1984
Wettest day
88 mm
24 April 2024
Windiest day
25.6 km/h
12 June 1951
Strongest gust
60.1 km/h
12 June 1951
Hottest feels-like
39.5 °C
18 February 1983
Coldest feels-like
11.1 °C
4 August 1996
Sunniest day
12.2 h
27 December 2003
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 | 30.8 °C | +1.3 °C | 38 mm | -16 mm |
| Feb | 31.7 °C | +1.0 °C | 5 mm | -37 mm |
| Mar | 31.9 °C | +1.2 °C | 74 mm | -7 mm |
| Apr | 29.5 °C | +0.5 °C | 143 mm | +37 mm |
| May | 28.3 °C | +0.9 °C | 62 mm | +14 mm |
| Jun | 27.3 °C | +0.4 °C | 17 mm | +9 mm |
| Jul | 27.2 °C | +0.8 °C | 2 mm | -4 mm |
| Aug | 27.7 °C | +1.1 °C | 5 mm | -3 mm |
| Sep | 28.9 °C | +1.2 °C | 8 mm | -5 mm |
| Oct | 29.5 °C | +0.7 °C | 96 mm | +60 mm |
| Nov | 29.5 °C | +0.6 °C | 32 mm | -44 mm |
| Dec | 30.5 °C | +1.9 °C | 72 mm | -26 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 Voi?
Voi has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 23.1 °C and it receives 575 mm of precipitation per year.
What is the hottest day ever recorded in Voi?
The hottest day measured in Voi between 1940 and 2025 was 24 March 1941, reaching 37.5 °C.
What is the coldest day in Voi?
The coldest day measured in Voi between 1940 and 2025 was 8 September 1984, at 12.9 °C.
Does it snow in Voi?
Almost never: Voi sees virtually no snow, with about 0 frost days per year.
Has the climate of Voi warmed?
Yes: Voi warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Voi?
The wettest day measured in Voi between 1940 and 2025 was 24 April 2024, with 88 mm of rain in 24 hours.
What was the windiest day in Voi?
The windiest day measured in Voi between 1940 and 2025 was 12 June 1951, with winds reaching 25.6 km/h.
What is the warmest month in Voi?
The warmest month in Voi is February (25.0 °C on average); the coldest is July (21.1 °C).
How much does it rain in Voi?
Voi receives on average 575 mm of precipitation per year, spread over about 124 rainy days.
Is it sunny in Voi?
Voi gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
Are there tropical nights in Voi?
Yes: Voi has on average 138 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Voi?
In Voi, between 1940 and 2025, the highest apparent temperature reached 39.5 °C on 18 February 1983, and the lowest was 11.1 °C on 4 August 1996.
Compare Voi with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Voi