Kisii climate — normals and trends

Q: What is the climate of Kisii?

Kisii has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 19.0 °C and it receives 2,090 mm of precipitation per year.

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

The hottest day measured in Kisii between 1940 and 2025 was 23 February 2005, reaching 32.9 °C.

Q: What is the coldest day in Kisii?

The coldest day measured in Kisii between 1940 and 2025 was 27 July 1943, at 9.0 °C.

Q: Does it snow in Kisii?

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

Q: Has the climate of Kisii warmed?

Yes: Kisii warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Kisii?

The wettest day measured in Kisii between 1940 and 2025 was 23 November 1946, with 110 mm of rain in 24 hours.

Q: What was the windiest day in Kisii?

The windiest day measured in Kisii between 1940 and 2025 was 23 October 2018, with winds reaching 22.1 km/h.

Q: What is the warmest month in Kisii?

The warmest month in Kisii is March (19.6 °C on average); the coldest is July (18.3 °C).

Q: How much does it rain in Kisii?

Kisii receives on average 2,090 mm of precipitation per year, spread over about 225 rainy days.

Q: Is it sunny in Kisii?

Kisii gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.

Kisii (Kenya) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 19.0 °C and it receives 2,090 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 (19.6 °C on average) and the coldest is July (18.3 °C). Rainfall peaks in April.

Kisii averages 0 frost days, 3 hot days (≥ 30 °C) and 225 rainy days per year.

Kisii has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.

The hottest day of the period reached 32.9 °C (on 23 February 2005) and the coldest 9.0 °C (on 27 July 1943).

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

KisiiKisii County

coords: -0.68°, 34.77°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthMarchColdest monthJulyWettest monthAprilDriest monthJuly

Mean daily temperature

19.0°C

Average daily high

25.1°C

Average daily low

14.4°C

Annual rainfall

2,090mm

Sunshine / day

10.8h

Mean relative humidity

77%

Average peak wind

9.9km/h

Seasonal range

1.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

3 d/yr

Rainy days (≥ 1 mm)

225 d/yr

Annual snowfall

0.0 cm

Average feels-like high

27.6 °C

Average feels-like low

14.2 °C

Average peak gust

26.7 km/h

Tropical nights (≥ 20 °C)

0 d/yr

Solar radiation

21.2 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.0 °C

since 1940

+0.2 °C per decade · r² = 0.72 · 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

32.9 °C

23 February 2005

Coldest day

9.0 °C

27 July 1943

Wettest day

110 mm

23 November 1946

Windiest day

22.1 km/h

23 October 2018

Strongest gust

51.8 km/h

23 October 2002

Hottest feels-like

34.8 °C

20 April 2010

Coldest feels-like

6.4 °C

28 August 1963

Sunniest day

12.0 h

2 December 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	31.3 °C22 February 2025	12.1 °C15 January 2025	19.9 °C	1,786 mm	16
2024	30.2 °C22 February 2024	13.2 °C12 July 2024	20.2 °C	2,300 mm	3
2023	32.4 °C19 February 2023	12.0 °C6 January 2023	20.2 °C	2,283 mm	16
2022	30.2 °C12 March 2022	10.5 °C14 January 2022	19.8 °C	1,663 mm	6
2021	30.0 °C2 March 2021	12.0 °C1 February 2021	19.7 °C	1,597 mm	1
2020	28.9 °C7 March 2020	12.6 °C9 February 2020	19.6 °C	2,288 mm	0
2019	31.9 °C24 March 2019	12.8 °C14 July 2019	20.1 °C	2,069 mm	15
2018	31.5 °C17 February 2018	11.9 °C17 July 2018	19.7 °C	1,838 mm	11
2017	31.6 °C15 February 2017	12.9 °C13 January 2017	20.3 °C	1,441 mm	16
2016	31.1 °C13 March 2016	12.4 °C28 June 2016	20.1 °C	1,545 mm	11
2015	32.5 °C9 March 2015	11.9 °C5 January 2015	19.9 °C	2,237 mm	20
2014	31.1 °C2 March 2014	10.8 °C13 February 2014	19.4 °C	1,506 mm	5
2013	30.3 °C27 February 2013	10.4 °C16 July 2013	19.3 °C	1,798 mm	2
2012	31.7 °C4 February 2012	10.1 °C3 January 2012	19.3 °C	2,006 mm	11
2011	31.0 °C10 March 2011	11.2 °C27 January 2011	19.4 °C	2,153 mm	6
2010	30.8 °C2 February 2010	13.0 °C16 January 2010	19.7 °C	1,957 mm	3
2009	30.2 °C18 February 2009	12.5 °C12 January 2009	19.8 °C	1,641 mm	3
2008	29.9 °C12 January 2008	11.5 °C9 July 2008	19.4 °C	1,703 mm	0
2007	29.8 °C20 February 2007	11.7 °C18 December 2007	19.4 °C	1,859 mm	0
2006	31.5 °C10 February 2006	12.4 °C22 June 2006	19.7 °C	2,288 mm	22
2005	32.9 °C23 February 2005	11.6 °C14 July 2005	20.1 °C	1,198 mm	19
2004	30.7 °C10 October 2004	11.3 °C4 July 2004	19.6 °C	1,677 mm	1
2003	31.4 °C6 March 2003	11.5 °C25 July 2003	19.6 °C	1,411 mm	12
2002	30.4 °C21 February 2002	12.2 °C9 July 2002	19.8 °C	1,859 mm	3
2001	29.9 °C28 February 2001	12.0 °C7 November 2001	19.0 °C	1,742 mm	0
2000	31.3 °C24 March 2000	11.1 °C21 February 2000	19.5 °C	1,246 mm	2
1999	31.0 °C26 February 1999	12.2 °C31 August 1999	19.3 °C	1,502 mm	7
1998	30.0 °C25 February 1998	12.4 °C22 June 1998	19.7 °C	1,916 mm	1
1997	32.2 °C11 March 1997	12.3 °C5 February 1997	19.9 °C	2,390 mm	18
1996	28.6 °C13 October 1996	11.7 °C24 September 1996	19.3 °C	1,676 mm	0
1995	29.2 °C5 February 1995	11.6 °C18 January 1995	19.4 °C	1,944 mm	0
1994	31.4 °C2 October 1994	11.8 °C24 August 1994	19.3 °C	2,159 mm	2
1993	29.7 °C25 September 1993	11.2 °C22 January 1993	19.3 °C	1,455 mm	0
1992	30.7 °C28 March 1992	12.5 °C28 May 1992	19.1 °C	1,924 mm	4
1991	29.7 °C20 September 1991	11.5 °C4 September 1991	18.9 °C	2,253 mm	0
1990	29.1 °C7 October 1990	11.2 °C8 January 1990	19.0 °C	2,220 mm	0
1989	29.6 °C1 March 1989	10.7 °C21 June 1989	18.7 °C	2,177 mm	0
1988	29.8 °C28 February 1988	10.8 °C19 July 1988	19.1 °C	2,206 mm	0
1987	30.1 °C30 December 1987	11.6 °C2 February 1987	19.5 °C	1,959 mm	2
1986	29.3 °C30 September 1986	9.9 °C5 August 1986	18.8 °C	2,410 mm	0
1985	30.9 °C16 March 1985	10.1 °C7 August 1985	18.8 °C	2,270 mm	2
1984	30.2 °C10 March 1984	10.8 °C20 January 1984	18.9 °C	1,941 mm	1
1983	29.2 °C7 March 1983	10.8 °C3 December 1983	19.1 °C	2,109 mm	0
1982	29.2 °C25 March 1982	11.1 °C19 July 1982	18.8 °C	2,163 mm	0
1981	30.4 °C2 March 1981	10.8 °C15 June 1981	18.9 °C	1,944 mm	1
1980	30.8 °C22 February 1980	10.7 °C20 March 1980	18.9 °C	1,884 mm	1
1979	29.3 °C19 October 1979	10.1 °C18 July 1979	18.8 °C	2,391 mm	0
1978	29.6 °C7 February 1978	9.5 °C30 January 1978	18.4 °C	2,660 mm	0
1977	29.6 °C29 September 1977	10.0 °C14 August 1977	18.6 °C	2,705 mm	0
1976	29.5 °C30 January 1976	10.2 °C19 August 1976	18.4 °C	2,323 mm	0
1975	29.6 °C9 February 1975	11.1 °C17 December 1975	18.3 °C	2,171 mm	0
1974	30.1 °C16 March 1974	10.8 °C30 July 1974	18.3 °C	2,464 mm	1
1973	29.6 °C6 February 1973	10.7 °C4 July 1973	18.9 °C	2,110 mm	0
1972	28.6 °C31 March 1972	11.5 °C2 September 1972	18.4 °C	2,998 mm	0
1971	29.2 °C5 March 1971	10.3 °C29 January 1971	18.1 °C	2,287 mm	0
1970	28.7 °C16 February 1970	10.7 °C11 July 1970	18.4 °C	2,418 mm	0
1969	29.9 °C1 October 1969	9.6 °C6 August 1969	18.7 °C	1,938 mm	0
1968	28.7 °C5 October 1968	9.2 °C15 January 1968	18.1 °C	2,694 mm	0
1967	30.0 °C26 February 1967	10.5 °C8 October 1967	18.3 °C	2,596 mm	1
1966	28.3 °C20 October 1966	9.9 °C24 December 1966	18.6 °C	2,409 mm	0
1965	29.3 °C9 March 1965	10.0 °C18 January 1965	18.5 °C	2,273 mm	0
1964	28.5 °C30 October 1964	9.8 °C3 November 1964	18.0 °C	2,677 mm	0
1963	30.1 °C20 October 1963	9.2 °C28 August 1963	18.0 °C	3,135 mm	2
1962	27.5 °C6 February 1962	9.8 °C2 July 1962	17.8 °C	2,772 mm	0
1961	30.2 °C21 January 1961	11.1 °C7 February 1961	18.6 °C	2,835 mm	1
1960	28.7 °C22 October 1960	11.0 °C28 January 1960	18.8 °C	2,275 mm	0
1959	29.8 °C17 March 1959	10.4 °C22 September 1959	18.8 °C	2,247 mm	0
1958	30.7 °C3 March 1958	10.4 °C28 June 1958	18.8 °C	2,127 mm	3
1957	29.7 °C8 October 1957	10.8 °C29 June 1957	18.6 °C	2,667 mm	0
1956	28.2 °C16 October 1956	10.6 °C23 July 1956	17.8 °C	2,393 mm	0
1955	27.1 °C7 October 1955	11.1 °C22 July 1955	17.9 °C	1,991 mm	0
1954	27.4 °C24 November 1954	10.3 °C2 July 1954	17.9 °C	1,991 mm	0
1953	29.0 °C7 September 1953	10.5 °C12 August 1953	18.0 °C	3,597 mm	0
1952	27.8 °C27 September 1952	11.7 °C16 August 1952	18.2 °C	2,690 mm	0
1951	29.4 °C8 October 1951	10.9 °C4 July 1951	18.2 °C	2,895 mm	0
1950	28.3 °C28 February 1950	10.6 °C18 July 1950	17.8 °C	2,295 mm	0
1949	28.0 °C31 October 1949	10.5 °C1 August 1949	18.3 °C	1,939 mm	0
1948	28.9 °C19 September 1948	11.5 °C18 March 1948	18.3 °C	2,282 mm	0
1947	30.4 °C10 October 1947	9.5 °C25 July 1947	18.4 °C	2,414 mm	1
1946	32.4 °C31 March 1946	11.6 °C30 December 1946	18.7 °C	1,771 mm	22
1945	29.6 °C16 September 1945	11.4 °C6 December 1945	18.6 °C	1,234 mm	0
1944	29.8 °C19 October 1944	10.6 °C7 July 1944	19.1 °C	1,441 mm	0
1943	30.9 °C18 February 1943	9.0 °C27 July 1943	19.0 °C	871 mm	4
1942	29.4 °C1 October 1942	11.2 °C10 January 1942	18.6 °C	1,131 mm	0
1941	29.1 °C8 February 1941	10.9 °C29 December 1941	18.4 °C	1,766 mm	0
1940	27.0 °C6 October 1940	10.7 °C4 December 1940	17.7 °C	2,308 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

26.0 °C

+0.9 °C

Hot days (≥ 30 °C)

16 d/yr

+13

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1786 mm

-304 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	26.0 °C	+0.6 °C	117 mm	-47 mm
Feb	28.7 °C	+2.5 °C	30 mm	-116 mm
Mar	27.1 °C	+1.1 °C	239 mm	-2 mm
Apr	25.7 °C	+0.7 °C	258 mm	-56 mm
May	25.5 °C	+0.8 °C	212 mm	-3 mm
Jun	25.0 °C	+0.8 °C	73 mm	-25 mm
Jul	24.7 °C	+0.6 °C	88 mm	+25 mm
Aug	24.8 °C	0.0 °C	156 mm	+73 mm
Sep	26.5 °C	+0.8 °C	97 mm	-10 mm
Oct	25.4 °C	-0.5 °C	245 mm	+96 mm
Nov	26.6 °C	+1.8 °C	61 mm	-207 mm
Dec	26.2 °C	+1.5 °C	212 mm	-33 mm

The year's extremes

Hottest day

31.3 °C

22 Feb 2025

Coldest day

12.1 °C

15 Jan 2025

Wettest day

44.1 mm

16 Aug 2025

Windiest day

16.4 km/h

10 Oct 2025

Strongest gust

39.2 km/h

10 Oct 2025

Hottest feels-like

32.8 °C

14 Mar 2025

Coldest feels-like

11.2 °C

15 Jan 2025

Sunniest day

12.0 h

2 Dec 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 Kisii?

Kisii has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 19.0 °C and it receives 2,090 mm of precipitation per year.

What is the hottest day ever recorded in Kisii?

The hottest day measured in Kisii between 1940 and 2025 was 23 February 2005, reaching 32.9 °C.

What is the coldest day in Kisii?

The coldest day measured in Kisii between 1940 and 2025 was 27 July 1943, at 9.0 °C.

Does it snow in Kisii?

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

Has the climate of Kisii warmed?

Yes: Kisii warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Kisii?

The wettest day measured in Kisii between 1940 and 2025 was 23 November 1946, with 110 mm of rain in 24 hours.

What was the windiest day in Kisii?

The windiest day measured in Kisii between 1940 and 2025 was 23 October 2018, with winds reaching 22.1 km/h.

What is the warmest month in Kisii?

The warmest month in Kisii is March (19.6 °C on average); the coldest is July (18.3 °C).

How much does it rain in Kisii?

Kisii receives on average 2,090 mm of precipitation per year, spread over about 225 rainy days.

Is it sunny in Kisii?

Kisii gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.

Are there tropical nights in Kisii?

Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Kisii.

What was the most extreme apparent temperature in Kisii?

In Kisii, between 1940 and 2025, the highest apparent temperature reached 34.8 °C on 20 April 2010, and the lowest was 6.4 °C on 28 August 1963.

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