Shanwa climate — normals and trends

Q: What is the climate of Shanwa?

Shanwa has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.4 °C and it receives 1,093 mm of precipitation per year.

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

The hottest day measured in Shanwa between 1940 and 2025 was 16 December 2005, reaching 35.1 °C.

Q: What is the coldest day in Shanwa?

The coldest day measured in Shanwa between 1940 and 2025 was 9 July 2008, at 12.4 °C.

Q: Does it snow in Shanwa?

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

Q: Has the climate of Shanwa warmed?

Yes: Shanwa warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Shanwa?

The wettest day measured in Shanwa between 1940 and 2025 was 18 March 1987, with 172 mm of rain in 24 hours.

Q: What was the windiest day in Shanwa?

The windiest day measured in Shanwa between 1940 and 2025 was 12 May 2007, with winds reaching 32.6 km/h.

Q: What is the warmest month in Shanwa?

The warmest month in Shanwa is October (24.2 °C on average); the coldest is January (21.5 °C).

Q: How much does it rain in Shanwa?

Shanwa receives on average 1,093 mm of precipitation per year, spread over about 129 rainy days.

Q: Is it sunny in Shanwa?

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

Shanwa (Tanzania) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 22.4 °C and it receives 1,093 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 October (24.2 °C on average) and the coldest is January (21.5 °C). Rainfall peaks in December.

Shanwa averages 0 frost days, 69 hot days (≥ 30 °C) and 129 rainy days per year.

Shanwa has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.

The hottest day of the period reached 35.1 °C (on 16 December 2005) and the coldest 12.4 °C (on 9 July 2008).

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

ShanwaSimiyu

coords: -3.17°, 33.77°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthOctoberColdest monthJanuaryWettest monthDecemberDriest monthJuly

Mean daily temperature

22.4°C

Average daily high

27.9°C

Average daily low

17.7°C

Annual rainfall

1,093mm

Sunshine / day

10.8h

Mean relative humidity

62%

Average peak wind

15.6km/h

Seasonal range

2.7°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

69 d/yr

Rainy days (≥ 1 mm)

129 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.3 °C

Average feels-like low

17.6 °C

Average peak gust

32.5 km/h

Tropical nights (≥ 20 °C)

16 d/yr

Solar radiation

21.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.9 °C

since 1940

+0.2 °C per decade · r² = 0.59 · 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

35.1 °C

16 December 2005

Coldest day

12.4 °C

9 July 2008

Wettest day

172 mm

18 March 1987

Windiest day

32.6 km/h

12 May 2007

Strongest gust

60.5 km/h

12 May 2007

Hottest feels-like

36.8 °C

30 March 2016

Coldest feels-like

9.0 °C

11 July 1944

Sunniest day

12.2 h

1 December 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	34.0 °C3 December 2025	15.1 °C31 July 2025	23.6 °C	722 mm	122
2024	33.6 °C27 September 2024	13.8 °C25 June 2024	23.4 °C	1,066 mm	109
2023	34.2 °C19 February 2023	14.4 °C20 July 2023	23.5 °C	1,081 mm	117
2022	35.0 °C26 October 2022	14.5 °C5 July 2022	23.3 °C	718 mm	107
2021	33.9 °C12 November 2021	14.7 °C11 March 2021	22.9 °C	720 mm	80
2020	33.7 °C6 November 2020	14.0 °C19 July 2020	22.6 °C	1,309 mm	55
2019	34.0 °C16 October 2019	14.4 °C24 July 2019	23.6 °C	1,017 mm	144
2018	34.0 °C16 November 2018	14.2 °C18 July 2018	22.6 °C	1,017 mm	77
2017	34.7 °C5 October 2017	15.5 °C10 July 2017	24.0 °C	858 mm	170
2016	33.5 °C28 December 2016	14.4 °C28 June 2016	23.5 °C	694 mm	131
2015	34.1 °C10 March 2015	15.1 °C24 August 2015	23.2 °C	966 mm	88
2014	33.1 °C5 March 2014	15.1 °C13 February 2014	23.1 °C	819 mm	105
2013	33.8 °C15 October 2013	13.8 °C15 July 2013	22.9 °C	828 mm	95
2012	33.9 °C25 October 2012	14.0 °C9 July 2012	22.8 °C	836 mm	93
2011	32.5 °C12 November 2011	15.1 °C29 January 2011	23.1 °C	1,024 mm	113
2010	33.1 °C7 November 2010	15.0 °C7 July 2010	23.0 °C	961 mm	87
2009	34.3 °C7 October 2009	14.5 °C19 July 2009	23.3 °C	883 mm	119
2008	33.7 °C18 October 2008	12.4 °C9 July 2008	22.9 °C	667 mm	107
2007	34.5 °C25 September 2007	13.7 °C20 June 2007	23.1 °C	703 mm	121
2006	34.8 °C9 February 2006	15.2 °C5 July 2006	23.1 °C	1,098 mm	113
2005	35.1 °C16 December 2005	15.3 °C10 July 2005	23.9 °C	554 mm	171
2004	34.5 °C9 October 2004	13.7 °C5 July 2004	23.2 °C	861 mm	98
2003	34.1 °C5 March 2003	14.8 °C10 July 2003	23.2 °C	635 mm	133
2002	33.5 °C1 October 2002	15.2 °C25 July 2002	22.5 °C	1,041 mm	61
2001	32.4 °C11 October 2001	15.2 °C16 July 2001	22.4 °C	783 mm	44
2000	33.2 °C5 October 2000	15.0 °C4 July 2000	22.8 °C	862 mm	93
1999	34.4 °C25 October 1999	15.3 °C6 July 1999	22.7 °C	644 mm	81
1998	32.4 °C2 December 1998	15.1 °C30 June 1998	22.8 °C	1,004 mm	83
1997	34.6 °C13 March 1997	15.2 °C13 July 1997	23.0 °C	1,173 mm	104
1996	33.7 °C25 October 1996	13.3 °C10 August 1996	22.9 °C	741 mm	92
1995	34.1 °C11 December 1995	15.4 °C23 August 1995	22.9 °C	854 mm	89
1994	33.2 °C2 October 1994	15.1 °C3 June 1994	22.8 °C	1,176 mm	71
1993	34.6 °C29 December 1993	15.2 °C22 January 1993	23.1 °C	640 mm	90
1992	32.9 °C9 November 1992	14.0 °C19 July 1992	22.7 °C	914 mm	61
1991	33.5 °C4 October 1991	14.8 °C23 July 1991	22.5 °C	1,087 mm	53
1990	32.7 °C7 October 1990	13.8 °C27 June 1990	22.4 °C	1,101 mm	48
1989	32.9 °C21 October 1989	13.7 °C17 June 1989	22.1 °C	1,292 mm	47
1988	32.6 °C28 February 1988	14.4 °C4 July 1988	22.7 °C	1,087 mm	56
1987	33.7 °C29 December 1987	14.9 °C5 July 1987	22.7 °C	1,251 mm	77
1986	33.5 °C9 October 1986	12.5 °C9 July 1986	22.0 °C	1,558 mm	54
1985	32.3 °C31 October 1985	13.2 °C8 June 1985	22.0 °C	1,148 mm	46
1984	32.6 °C26 September 1984	15.0 °C2 June 1984	22.2 °C	1,198 mm	38
1983	33.1 °C16 September 1983	15.8 °C8 January 1983	22.9 °C	971 mm	66
1982	31.8 °C10 October 1982	14.9 °C4 November 1982	22.1 °C	1,351 mm	30
1981	33.4 °C24 September 1981	13.5 °C22 June 1981	22.5 °C	1,157 mm	72
1980	32.5 °C18 September 1980	14.0 °C20 March 1980	22.2 °C	976 mm	46
1979	33.2 °C12 October 1979	14.4 °C17 July 1979	21.9 °C	1,200 mm	61
1978	32.7 °C17 October 1978	13.4 °C18 July 1978	21.8 °C	1,448 mm	50
1977	33.9 °C29 September 1977	13.9 °C20 June 1977	21.9 °C	1,505 mm	48
1976	33.9 °C28 October 1976	14.4 °C29 June 1976	22.2 °C	1,375 mm	62
1975	34.0 °C10 November 1975	14.1 °C5 August 1975	21.8 °C	1,199 mm	31
1974	33.1 °C22 October 1974	14.2 °C21 June 1974	21.7 °C	1,169 mm	52
1973	33.2 °C26 October 1973	12.7 °C3 July 1973	22.3 °C	1,159 mm	53
1972	32.7 °C3 September 1972	12.7 °C29 June 1972	21.4 °C	1,774 mm	37
1971	32.0 °C22 September 1971	13.0 °C8 June 1971	21.5 °C	1,167 mm	33
1970	33.2 °C30 October 1970	13.4 °C11 July 1970	21.7 °C	1,293 mm	41
1969	33.1 °C7 November 1969	13.4 °C6 August 1969	22.1 °C	1,013 mm	54
1968	32.6 °C4 October 1968	13.3 °C17 July 1968	21.2 °C	1,426 mm	30
1967	33.7 °C9 October 1967	14.7 °C29 July 1967	21.9 °C	1,150 mm	53
1966	33.8 °C15 October 1966	14.8 °C28 June 1966	22.2 °C	1,128 mm	62
1965	32.8 °C19 November 1965	12.5 °C18 January 1965	21.9 °C	1,189 mm	54
1964	33.2 °C18 October 1964	13.8 °C12 August 1964	21.5 °C	1,375 mm	37
1963	32.9 °C10 October 1963	12.9 °C29 July 1963	21.3 °C	1,333 mm	44
1962	31.3 °C1 October 1962	14.0 °C9 July 1962	21.3 °C	1,253 mm	22
1961	32.9 °C21 January 1961	14.6 °C14 February 1961	22.2 °C	1,584 mm	45
1960	33.3 °C14 December 1960	13.2 °C31 July 1960	22.2 °C	1,128 mm	57
1959	31.5 °C23 September 1959	13.1 °C6 June 1959	21.9 °C	1,469 mm	25
1958	33.7 °C29 October 1958	13.3 °C24 July 1958	22.2 °C	1,426 mm	49
1957	32.8 °C22 October 1957	13.0 °C28 June 1957	21.7 °C	1,826 mm	46
1956	32.1 °C15 October 1956	13.4 °C20 July 1956	21.5 °C	1,201 mm	39
1955	32.3 °C7 October 1955	13.2 °C13 June 1955	21.4 °C	1,243 mm	23
1954	32.1 °C24 October 1954	13.8 °C27 July 1954	21.5 °C	1,253 mm	39
1953	32.4 °C11 October 1953	12.5 °C6 July 1953	21.1 °C	2,203 mm	25
1952	32.2 °C13 October 1952	14.1 °C2 July 1952	21.6 °C	1,323 mm	32
1951	32.3 °C6 September 1951	14.2 °C3 July 1951	21.3 °C	1,792 mm	33
1950	31.6 °C2 October 1950	13.3 °C3 June 1950	21.2 °C	1,218 mm	21
1949	32.4 °C31 October 1949	13.7 °C1 August 1949	21.8 °C	1,025 mm	42
1948	31.8 °C12 September 1948	14.8 °C16 July 1948	21.9 °C	1,165 mm	32
1947	33.0 °C28 October 1947	13.4 °C14 August 1947	21.7 °C	1,277 mm	55
1946	34.1 °C20 March 1946	14.4 °C5 August 1946	22.7 °C	852 mm	75
1945	32.6 °C4 October 1945	14.5 °C10 April 1945	22.0 °C	739 mm	62
1944	32.9 °C4 September 1944	13.2 °C11 July 1944	22.9 °C	724 mm	126
1943	33.3 °C9 January 1943	14.0 °C27 July 1943	23.1 °C	469 mm	111
1942	32.2 °C1 October 1942	14.0 °C28 July 1942	22.3 °C	637 mm	77
1941	32.7 °C20 October 1941	14.1 °C26 November 1941	21.6 °C	1,099 mm	37
1940	30.9 °C11 October 1940	14.3 °C9 February 1940	21.4 °C	1,122 mm	10

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

29.1 °C

+1.2 °C

Hot days (≥ 30 °C)

122 d/yr

+53

Frost days (< 0 °C)

0 d/yr

Annual rainfall

722 mm

-371 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	27.6 °C	+0.9 °C	87 mm	-78 mm
Feb	30.1 °C	+2.8 °C	36 mm	-110 mm
Mar	28.7 °C	+1.4 °C	170 mm	-12 mm
Apr	27.9 °C	+1.2 °C	92 mm	-60 mm
May	28.2 °C	+1.0 °C	40 mm	+3 mm
Jun	28.5 °C	+0.6 °C	2 mm	-3 mm
Jul	28.3 °C	+0.4 °C	0 mm	-2 mm
Aug	29.3 °C	+0.5 °C	11 mm	+6 mm
Sep	31.4 °C	+1.4 °C	3 mm	-9 mm
Oct	30.1 °C	-0.2 °C	63 mm	+21 mm
Nov	30.8 °C	+2.6 °C	39 mm	-109 mm
Dec	28.3 °C	+1.5 °C	179 mm	-19 mm

The year's extremes

Hottest day

34.0 °C

3 Dec 2025

Coldest day

15.1 °C

31 Jul 2025

Wettest day

32.2 mm

28 Dec 2025

Windiest day

27.6 km/h

9 Jun 2025

Strongest gust

53.3 km/h

20 Sep 2025

Hottest feels-like

35.2 °C

29 Sep 2025

Coldest feels-like

11.9 °C

4 Aug 2025

Sunniest day

12.2 h

26 Nov 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 Shanwa?

Shanwa has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 22.4 °C and it receives 1,093 mm of precipitation per year.

What is the hottest day ever recorded in Shanwa?

The hottest day measured in Shanwa between 1940 and 2025 was 16 December 2005, reaching 35.1 °C.

What is the coldest day in Shanwa?

The coldest day measured in Shanwa between 1940 and 2025 was 9 July 2008, at 12.4 °C.

Does it snow in Shanwa?

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

Has the climate of Shanwa warmed?

Yes: Shanwa warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Shanwa?

The wettest day measured in Shanwa between 1940 and 2025 was 18 March 1987, with 172 mm of rain in 24 hours.

What was the windiest day in Shanwa?

The windiest day measured in Shanwa between 1940 and 2025 was 12 May 2007, with winds reaching 32.6 km/h.

What is the warmest month in Shanwa?

The warmest month in Shanwa is October (24.2 °C on average); the coldest is January (21.5 °C).

How much does it rain in Shanwa?

Shanwa receives on average 1,093 mm of precipitation per year, spread over about 129 rainy days.

Is it sunny in Shanwa?

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

Are there tropical nights in Shanwa?

Yes: Shanwa has on average 16 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Shanwa?

In Shanwa, between 1940 and 2025, the highest apparent temperature reached 36.8 °C on 30 March 2016, and the lowest was 9.0 °C on 11 July 1944.

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