Busia climate — normals and trends

Q: What is the climate of Busia?

Busia has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 21.5 °C and it receives 2,465 mm of precipitation per year.

Q: What is the hottest day ever recorded in Busia?

The hottest day measured in Busia between 1940 and 2025 was 10 February 2006, reaching 35.7 °C.

Q: What is the coldest day in Busia?

The coldest day measured in Busia between 1940 and 2025 was 1 August 1949, at 12.1 °C.

Q: Does it snow in Busia?

Almost never: Busia sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Busia warmed?

Yes: Busia warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Busia?

The wettest day measured in Busia between 1940 and 2025 was 19 March 2020, with 109 mm of rain in 24 hours.

Q: What was the windiest day in Busia?

The windiest day measured in Busia between 1940 and 2025 was 2 February 1961, with winds reaching 21.1 km/h.

Q: What is the warmest month in Busia?

The warmest month in Busia is February (22.4 °C on average); the coldest is July (20.7 °C).

Q: How much does it rain in Busia?

Busia receives on average 2,465 mm of precipitation per year, spread over about 290 rainy days.

Q: Is it sunny in Busia?

Busia gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.

Busia (Kenya) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 21.5 °C and it receives 2,465 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 (22.4 °C on average) and the coldest is July (20.7 °C). Rainfall peaks in April.

Busia averages 0 frost days, 19 hot days (≥ 30 °C) and 290 rainy days per year.

Busia has warmed by +2.2 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.

The hottest day of the period reached 35.7 °C (on 10 February 2006) and the coldest 12.1 °C (on 1 August 1949).

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

BusiaBusia County

coords: 0.46°, 34.11°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthFebruaryColdest monthJulyWettest monthAprilDriest monthJanuary

Mean daily temperature

21.5°C

Average daily high

26.8°C

Average daily low

17.5°C

Annual rainfall

2,465mm

Sunshine / day

10.4h

Mean relative humidity

82%

Average peak wind

9.7km/h

Seasonal range

1.7°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

19 d/yr

Rainy days (≥ 1 mm)

290 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.6 °C

Average feels-like low

19.0 °C

Average peak gust

25.0 km/h

Tropical nights (≥ 20 °C)

8 d/yr

Solar radiation

19.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.2 °C

since 1940

+0.3 °C per decade · r² = 0.79 · p = < 0.001

19402025

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

10 February 2006

Coldest day

12.1 °C

1 August 1949

Wettest day

109 mm

19 March 2020

Windiest day

21.1 km/h

2 February 1961

Strongest gust

47.5 km/h

4 March 2011

Hottest feels-like

38.4 °C

5 March 1958

Coldest feels-like

10.8 °C

26 July 1947

Sunniest day

12.0 h

6 February 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	34.1 °C27 February 2025	15.6 °C23 November 2025	22.7 °C	1,862 mm	51
2024	32.1 °C23 March 2024	16.8 °C29 December 2024	23.0 °C	2,204 mm	30
2023	33.9 °C19 February 2023	15.6 °C6 January 2023	22.8 °C	2,374 mm	41
2022	32.8 °C13 January 2022	14.8 °C3 August 2022	22.4 °C	2,217 mm	27
2021	32.3 °C2 March 2021	14.8 °C23 July 2021	22.3 °C	1,829 mm	15
2020	30.6 °C16 February 2020	15.5 °C27 July 2020	22.3 °C	2,699 mm	9
2019	34.0 °C24 March 2019	15.9 °C20 December 2019	22.5 °C	2,528 mm	47
2018	34.9 °C16 February 2018	15.0 °C8 August 2018	22.3 °C	2,342 mm	24
2017	34.6 °C24 January 2017	16.8 °C4 September 2017	22.8 °C	2,017 mm	62
2016	33.5 °C16 March 2016	16.0 °C29 January 2016	22.9 °C	1,693 mm	56
2015	35.4 °C11 March 2015	15.0 °C5 January 2015	22.6 °C	2,259 mm	63
2014	33.9 °C4 March 2014	15.1 °C12 February 2014	22.3 °C	1,978 mm	40
2013	33.0 °C24 February 2013	14.1 °C16 July 2013	22.0 °C	2,063 mm	35
2012	34.6 °C16 February 2012	14.1 °C3 January 2012	22.2 °C	2,298 mm	60
2011	33.2 °C27 February 2011	14.0 °C27 January 2011	22.1 °C	2,341 mm	30
2010	33.1 °C3 February 2010	15.8 °C16 December 2010	22.3 °C	2,250 mm	28
2009	31.9 °C2 January 2009	14.9 °C11 January 2009	22.3 °C	2,074 mm	34
2008	31.4 °C10 January 2008	15.4 °C25 July 2008	21.9 °C	2,152 mm	33
2007	32.0 °C20 February 2007	14.7 °C18 December 2007	22.0 °C	2,079 mm	23
2006	35.7 °C10 February 2006	16.0 °C25 August 2006	22.2 °C	2,659 mm	39
2005	35.2 °C23 February 2005	14.5 °C14 July 2005	22.5 °C	1,923 mm	59
2004	33.3 °C13 February 2004	14.5 °C4 July 2004	22.1 °C	2,190 mm	25
2003	33.9 °C6 March 2003	15.3 °C26 December 2003	22.1 °C	1,874 mm	37
2002	32.5 °C22 February 2002	15.2 °C9 July 2002	22.1 °C	2,168 mm	23
2001	32.4 °C3 March 2001	15.1 °C20 July 2001	21.7 °C	2,050 mm	13
2000	31.9 °C24 February 2000	14.0 °C28 January 2000	21.8 °C	1,996 mm	27
1999	33.6 °C9 February 1999	15.2 °C17 July 1999	21.7 °C	2,186 mm	31
1998	32.0 °C13 March 1998	15.9 °C7 September 1998	22.3 °C	2,127 mm	27
1997	33.3 °C7 March 1997	15.4 °C13 January 1997	22.2 °C	2,585 mm	39
1996	30.4 °C5 March 1996	15.0 °C30 November 1996	21.8 °C	2,210 mm	6
1995	31.4 °C5 February 1995	15.2 °C21 December 1995	22.1 °C	2,421 mm	17
1994	31.6 °C21 January 1994	15.5 °C4 July 1994	21.8 °C	2,793 mm	16
1993	30.9 °C30 December 1993	14.8 °C21 January 1993	21.8 °C	2,120 mm	9
1992	33.1 °C15 March 1992	15.2 °C1 September 1992	21.7 °C	2,292 mm	27
1991	31.6 °C21 February 1991	14.9 °C25 July 1991	21.6 °C	2,597 mm	16
1990	31.1 °C28 January 1990	14.7 °C8 January 1990	21.6 °C	2,390 mm	7
1989	32.5 °C1 March 1989	14.0 °C20 January 1989	21.4 °C	2,471 mm	12
1988	32.4 °C2 March 1988	14.0 °C5 December 1988	21.6 °C	2,575 mm	12
1987	32.5 °C30 December 1987	15.3 °C2 February 1987	22.0 °C	2,406 mm	13
1986	30.4 °C25 February 1986	13.9 °C5 August 1986	21.3 °C	2,868 mm	3
1985	34.0 °C16 March 1985	14.4 °C9 July 1985	21.2 °C	2,727 mm	15
1984	32.4 °C21 February 1984	14.3 °C23 December 1984	21.2 °C	2,414 mm	11
1983	32.3 °C14 February 1983	14.6 °C14 July 1983	21.7 °C	2,373 mm	23
1982	32.5 °C26 March 1982	15.1 °C15 August 1982	21.4 °C	2,645 mm	13
1981	32.1 °C1 March 1981	14.7 °C13 September 1981	21.4 °C	2,359 mm	18
1980	32.8 °C22 February 1980	14.4 °C24 July 1980	21.4 °C	2,374 mm	19
1979	31.3 °C6 March 1979	14.7 °C23 July 1979	21.4 °C	2,719 mm	8
1978	33.4 °C7 February 1978	13.5 °C5 February 1978	21.1 °C	2,800 mm	9
1977	31.2 °C16 March 1977	13.1 °C11 August 1977	21.2 °C	2,689 mm	6
1976	31.8 °C30 January 1976	13.5 °C25 July 1976	20.9 °C	2,791 mm	12
1975	32.0 °C19 February 1975	14.4 °C5 November 1975	20.9 °C	3,143 mm	21
1974	32.7 °C16 March 1974	14.0 °C20 July 1974	20.9 °C	2,750 mm	14
1973	32.1 °C6 February 1973	14.3 °C11 December 1973	21.3 °C	2,696 mm	24
1972	30.3 °C31 March 1972	14.8 °C2 September 1972	20.9 °C	3,450 mm	3
1971	31.8 °C7 March 1971	13.6 °C10 July 1971	20.7 °C	2,928 mm	7
1970	31.0 °C8 February 1970	14.3 °C28 June 1970	20.9 °C	2,826 mm	1
1969	30.3 °C2 October 1969	13.9 °C16 July 1969	21.1 °C	2,179 mm	2
1968	29.8 °C3 September 1968	13.8 °C14 January 1968	20.8 °C	3,034 mm	0
1967	31.2 °C15 February 1967	14.1 °C19 September 1967	20.9 °C	3,099 mm	24
1966	30.3 °C18 January 1966	12.7 °C24 December 1966	21.2 °C	2,789 mm	3
1965	30.6 °C25 January 1965	13.6 °C20 February 1965	21.1 °C	2,948 mm	5
1964	29.9 °C31 January 1964	13.2 °C9 December 1964	20.8 °C	3,071 mm	0
1963	30.2 °C24 March 1963	13.0 °C8 August 1963	20.6 °C	3,291 mm	1
1962	30.2 °C14 February 1962	14.3 °C2 July 1962	20.3 °C	3,292 mm	2
1961	32.9 °C21 January 1961	14.0 °C20 September 1961	21.3 °C	3,708 mm	22
1960	31.4 °C12 December 1960	14.1 °C29 December 1960	21.4 °C	3,215 mm	12
1959	32.1 °C17 March 1959	14.1 °C16 June 1959	21.5 °C	3,138 mm	22
1958	32.7 °C3 March 1958	13.4 °C28 June 1958	21.4 °C	2,682 mm	19
1957	30.3 °C15 February 1957	13.3 °C5 February 1957	21.3 °C	2,979 mm	6
1956	29.7 °C13 March 1956	14.1 °C23 July 1956	20.3 °C	2,428 mm	0
1955	29.0 °C3 March 1955	14.4 °C10 August 1955	20.4 °C	2,620 mm	0
1954	29.2 °C24 November 1954	13.2 °C2 July 1954	20.5 °C	2,165 mm	0
1953	28.6 °C15 February 1953	12.7 °C12 August 1953	20.3 °C	3,673 mm	0
1952	29.2 °C23 January 1952	14.8 °C19 July 1952	20.6 °C	2,646 mm	0
1951	28.6 °C1 March 1951	13.3 °C4 July 1951	20.5 °C	3,052 mm	0
1950	30.7 °C1 March 1950	13.4 °C19 August 1950	20.3 °C	2,415 mm	2
1949	29.9 °C23 March 1949	12.1 °C1 August 1949	20.6 °C	2,387 mm	0
1948	28.6 °C23 March 1948	14.2 °C27 July 1948	20.6 °C	2,458 mm	0
1947	29.0 °C1 November 1947	12.4 °C26 July 1947	20.6 °C	2,548 mm	0
1946	34.1 °C14 February 1946	14.0 °C7 August 1946	21.1 °C	1,925 mm	51
1945	30.1 °C23 February 1945	14.5 °C2 August 1945	20.8 °C	1,655 mm	1
1944	32.7 °C3 March 1944	14.0 °C7 July 1944	21.4 °C	1,656 mm	34
1943	34.2 °C19 February 1943	12.5 °C27 July 1943	21.5 °C	1,246 mm	55
1942	32.7 °C8 February 1942	14.3 °C14 December 1942	21.0 °C	1,501 mm	24
1941	31.9 °C7 February 1941	14.5 °C26 July 1941	20.9 °C	1,927 mm	15
1940	28.9 °C26 December 1940	14.1 °C29 June 1940	20.2 °C	2,440 mm	0

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?

Year

Across the whole year

Average daily high

28.1 °C

+1.3 °C

Hot days (≥ 30 °C)

51 d/yr

+32

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1862 mm

-603 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	28.4 °C	+0.7 °C	107 mm	-20 mm
Feb	31.0 °C	+2.7 °C	28 mm	-125 mm
Mar	29.4 °C	+1.6 °C	229 mm	-19 mm
Apr	27.6 °C	+1.1 °C	296 mm	-16 mm
May	27.6 °C	+1.3 °C	265 mm	-44 mm
Jun	27.1 °C	+0.9 °C	112 mm	-78 mm
Jul	26.9 °C	+1.0 °C	142 mm	+1 mm
Aug	27.0 °C	+0.6 °C	162 mm	-9 mm
Sep	28.5 °C	+1.6 °C	143 mm	-66 mm
Oct	27.4 °C	+0.7 °C	173 mm	-52 mm
Nov	28.4 °C	+2.1 °C	69 mm	-153 mm
Dec	28.3 °C	+1.5 °C	137 mm	-21 mm

The year's extremes

Hottest day

34.1 °C

27 Feb 2025

Coldest day

15.6 °C

23 Nov 2025

Wettest day

39.7 mm

7 Apr 2025

Windiest day

17.9 km/h

20 Jan 2025

Strongest gust

40.3 km/h

3 Mar 2025

Hottest feels-like

36.6 °C

5 Mar 2025

Coldest feels-like

15.1 °C

27 Feb 2025

Sunniest day

12.0 h

5 Feb 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Busia?

Busia has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 21.5 °C and it receives 2,465 mm of precipitation per year.

What is the hottest day ever recorded in Busia?

The hottest day measured in Busia between 1940 and 2025 was 10 February 2006, reaching 35.7 °C.

What is the coldest day in Busia?

The coldest day measured in Busia between 1940 and 2025 was 1 August 1949, at 12.1 °C.

Does it snow in Busia?

Almost never: Busia sees virtually no snow, with about 0 frost days per year.

Has the climate of Busia warmed?

Yes: Busia warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Busia?

The wettest day measured in Busia between 1940 and 2025 was 19 March 2020, with 109 mm of rain in 24 hours.

What was the windiest day in Busia?

The windiest day measured in Busia between 1940 and 2025 was 2 February 1961, with winds reaching 21.1 km/h.

What is the warmest month in Busia?

The warmest month in Busia is February (22.4 °C on average); the coldest is July (20.7 °C).

How much does it rain in Busia?

Busia receives on average 2,465 mm of precipitation per year, spread over about 290 rainy days.

Is it sunny in Busia?

Busia gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.

Are there tropical nights in Busia?

Yes: Busia has on average 8 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Busia?

In Busia, between 1940 and 2025, the highest apparent temperature reached 38.4 °C on 5 March 1958, and the lowest was 10.8 °C on 26 July 1947.

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