Sirari climate — normals and trends

Q: What is the climate of Sirari?

Sirari has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 20.5 °C and it receives 1,516 mm of precipitation per year.

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

The hottest day measured in Sirari between 1940 and 2025 was 25 September 1994, reaching 34.5 °C.

Q: What is the coldest day in Sirari?

The coldest day measured in Sirari between 1940 and 2025 was 27 July 1943, at 10.6 °C.

Q: Does it snow in Sirari?

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

Q: Has the climate of Sirari warmed?

Yes: Sirari warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Sirari?

The wettest day measured in Sirari between 1940 and 2025 was 6 March 1953, with 105 mm of rain in 24 hours.

Q: What was the windiest day in Sirari?

The windiest day measured in Sirari between 1940 and 2025 was 16 May 1947, with winds reaching 24.9 km/h.

Q: What is the warmest month in Sirari?

The warmest month in Sirari is October (21.3 °C on average); the coldest is December (19.9 °C).

Q: How much does it rain in Sirari?

Sirari receives on average 1,516 mm of precipitation per year, spread over about 196 rainy days.

Q: Is it sunny in Sirari?

Sirari gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.

Sirari (Tanzania) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 20.5 °C and it receives 1,516 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 (21.3 °C on average) and the coldest is December (19.9 °C). Rainfall peaks in April.

Sirari averages 0 frost days, 16 hot days (≥ 30 °C) and 196 rainy days per year.

Sirari has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.

The hottest day of the period reached 34.5 °C (on 25 September 1994) and the coldest 10.6 °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

SirariMara

coords: -1.25°, 34.48°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthOctoberColdest monthDecemberWettest monthAprilDriest monthJuly

Mean daily temperature

20.5°C

Average daily high

26.4°C

Average daily low

16.0°C

Annual rainfall

1,516mm

Sunshine / day

10.6h

Mean relative humidity

73%

Average peak wind

12.4km/h

Seasonal range

1.4°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

16 d/yr

Rainy days (≥ 1 mm)

196 d/yr

Annual snowfall

0.0 cm

Average feels-like high

28.6 °C

Average feels-like low

16.0 °C

Average peak gust

30.0 km/h

Tropical nights (≥ 20 °C)

0 d/yr

Solar radiation

20.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.1 °C

since 1940

+0.2 °C per decade · r² = 0.70 · 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

34.5 °C

25 September 1994

Coldest day

10.6 °C

27 July 1943

Wettest day

105 mm

6 March 1953

Windiest day

24.9 km/h

16 May 1947

Strongest gust

54.7 km/h

23 October 2018

Hottest feels-like

35.7 °C

20 February 2005

Coldest feels-like

7.9 °C

27 July 1943

Sunniest day

12.0 h

1 December 2002

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	32.1 °C22 February 2025	14.4 °C17 August 2025	21.5 °C	1,326 mm	31
2024	31.9 °C11 September 2024	15.1 °C12 July 2024	21.7 °C	1,580 mm	30
2023	32.8 °C19 February 2023	14.9 °C6 January 2023	21.8 °C	1,780 mm	41
2022	32.5 °C26 October 2022	13.8 °C14 January 2022	21.3 °C	1,346 mm	28
2021	31.1 °C25 October 2021	14.1 °C29 August 2021	21.2 °C	1,118 mm	17
2020	30.8 °C17 September 2020	14.0 °C11 August 2020	20.9 °C	1,717 mm	2
2019	32.7 °C19 April 2019	14.2 °C24 July 2019	21.5 °C	1,536 mm	36
2018	32.7 °C16 November 2018	13.3 °C18 July 2018	21.3 °C	1,309 mm	35
2017	32.8 °C15 February 2017	13.1 °C10 July 2017	21.9 °C	1,215 mm	49
2016	31.6 °C13 March 2016	13.8 °C29 June 2016	21.7 °C	1,061 mm	29
2015	33.3 °C9 March 2015	14.5 °C23 June 2015	21.3 °C	1,449 mm	40
2014	32.0 °C4 March 2014	12.6 °C13 February 2014	20.9 °C	1,307 mm	14
2013	31.2 °C27 February 2013	11.3 °C16 July 2013	20.9 °C	1,300 mm	20
2012	32.8 °C29 March 2012	12.7 °C4 January 2012	20.6 °C	1,568 mm	22
2011	32.0 °C28 February 2011	14.4 °C29 June 2011	20.9 °C	1,629 mm	24
2010	31.0 °C2 February 2010	14.7 °C16 January 2010	21.2 °C	1,546 mm	9
2009	32.5 °C25 March 2009	13.9 °C6 July 2009	21.4 °C	1,540 mm	35
2008	31.4 °C28 September 2008	12.9 °C9 July 2008	21.0 °C	1,228 mm	10
2007	31.4 °C29 October 2007	13.1 °C29 July 2007	20.9 °C	1,271 mm	14
2006	34.2 °C10 February 2006	13.5 °C22 June 2006	21.3 °C	1,540 mm	54
2005	34.0 °C23 February 2005	13.9 °C18 July 2005	21.8 °C	979 mm	78
2004	32.5 °C10 October 2004	13.2 °C5 July 2004	21.3 °C	1,315 mm	21
2003	33.1 °C19 March 2003	13.2 °C29 August 2003	21.2 °C	1,046 mm	37
2002	31.9 °C26 September 2002	13.3 °C16 June 2002	21.3 °C	1,276 mm	26
2001	31.0 °C20 October 2001	13.6 °C20 July 2001	20.6 °C	1,156 mm	2
2000	31.3 °C12 October 2000	13.4 °C28 January 2000	21.0 °C	1,020 mm	13
1999	32.0 °C8 February 1999	13.8 °C6 July 1999	20.8 °C	1,184 mm	24
1998	30.8 °C14 September 1998	14.7 °C22 June 1998	21.2 °C	1,216 mm	5
1997	33.8 °C27 September 1997	14.4 °C19 July 1997	21.4 °C	1,652 mm	52
1996	31.5 °C13 October 1996	13.5 °C10 August 1996	21.0 °C	1,171 mm	9
1995	30.9 °C25 August 1995	13.8 °C26 August 1995	20.9 °C	1,380 mm	8
1994	34.5 °C25 September 1994	12.8 °C24 August 1994	20.8 °C	1,648 mm	20
1993	32.3 °C23 October 1993	13.3 °C22 January 1993	21.0 °C	1,136 mm	36
1992	32.6 °C28 March 1992	13.4 °C19 July 1992	20.7 °C	1,403 mm	11
1991	32.3 °C20 September 1991	13.2 °C24 October 1991	20.4 °C	1,602 mm	13
1990	32.2 °C7 October 1990	13.2 °C8 January 1990	20.5 °C	1,626 mm	6
1989	30.6 °C22 October 1989	12.2 °C22 June 1989	20.2 °C	1,599 mm	2
1988	31.6 °C2 March 1988	12.5 °C19 July 1988	20.6 °C	1,540 mm	7
1987	32.2 °C30 December 1987	13.5 °C3 July 1987	20.9 °C	1,416 mm	21
1986	32.4 °C30 September 1986	12.0 °C5 August 1986	20.4 °C	1,890 mm	23
1985	31.8 °C16 March 1985	12.3 °C7 August 1985	20.3 °C	1,678 mm	10
1984	31.2 °C24 March 1984	12.8 °C21 January 1984	20.5 °C	1,543 mm	6
1983	30.3 °C15 September 1983	13.5 °C30 November 1983	20.6 °C	1,489 mm	1
1982	31.4 °C26 March 1982	13.3 °C20 July 1982	20.3 °C	1,681 mm	7
1981	31.4 °C4 March 1981	12.8 °C16 June 1981	20.4 °C	1,404 mm	9
1980	31.6 °C22 February 1980	12.5 °C24 July 1980	20.5 °C	1,365 mm	15
1979	32.0 °C19 October 1979	13.0 °C18 July 1979	20.2 °C	1,572 mm	13
1978	30.6 °C17 October 1978	11.6 °C5 February 1978	19.9 °C	1,849 mm	2
1977	32.1 °C15 October 1977	12.0 °C11 August 1977	20.0 °C	2,026 mm	12
1976	31.6 °C29 October 1976	12.2 °C20 August 1976	19.8 °C	1,943 mm	13
1975	30.9 °C9 February 1975	12.3 °C29 July 1975	19.7 °C	1,631 mm	5
1974	31.4 °C16 March 1974	12.5 °C30 July 1974	19.7 °C	1,707 mm	9
1973	30.9 °C5 April 1973	10.6 °C4 July 1973	20.2 °C	1,554 mm	8
1972	30.2 °C3 September 1972	13.5 °C4 August 1972	19.6 °C	2,136 mm	5
1971	30.7 °C16 October 1971	11.5 °C10 July 1971	19.5 °C	1,754 mm	6
1970	30.0 °C30 October 1970	12.0 °C25 July 1970	19.9 °C	1,719 mm	1
1969	32.0 °C1 October 1969	11.6 °C6 August 1969	20.2 °C	1,363 mm	5
1968	30.6 °C4 October 1968	11.8 °C15 January 1968	19.6 °C	1,840 mm	7
1967	30.7 °C12 February 1967	11.6 °C29 July 1967	19.7 °C	1,718 mm	3
1966	30.9 °C17 October 1966	12.2 °C24 December 1966	20.2 °C	1,506 mm	6
1965	32.0 °C11 October 1965	12.2 °C18 January 1965	20.1 °C	1,579 mm	15
1964	30.8 °C30 October 1964	11.9 °C31 August 1964	19.5 °C	1,843 mm	2
1963	33.2 °C20 October 1963	10.9 °C28 July 1963	19.5 °C	2,070 mm	22
1962	29.9 °C1 October 1962	12.1 °C2 July 1962	19.2 °C	1,808 mm	0
1961	30.8 °C21 January 1961	12.6 °C16 June 1961	20.0 °C	2,220 mm	5
1960	31.5 °C22 October 1960	12.2 °C26 July 1960	20.3 °C	1,668 mm	7
1959	30.0 °C17 March 1959	11.9 °C22 September 1959	20.1 °C	1,729 mm	1
1958	31.9 °C29 October 1958	11.7 °C8 August 1958	20.2 °C	1,578 mm	14
1957	31.5 °C24 September 1957	12.6 °C12 August 1957	20.1 °C	2,021 mm	14
1956	29.9 °C16 October 1956	12.1 °C23 July 1956	19.2 °C	1,649 mm	0
1955	28.9 °C25 October 1955	12.5 °C16 August 1955	19.3 °C	1,489 mm	0
1954	29.5 °C24 October 1954	11.3 °C3 July 1954	19.4 °C	1,426 mm	0
1953	29.9 °C7 September 1953	12.4 °C11 August 1953	19.3 °C	2,715 mm	0
1952	30.3 °C27 October 1952	13.6 °C16 June 1952	19.7 °C	1,755 mm	2
1951	30.5 °C6 September 1951	12.0 °C17 July 1951	19.5 °C	1,998 mm	3
1950	29.5 °C17 October 1950	12.3 °C11 August 1950	19.3 °C	1,542 mm	0
1949	30.6 °C31 October 1949	11.7 °C31 July 1949	19.7 °C	1,405 mm	3
1948	31.4 °C19 September 1948	12.9 °C12 June 1948	19.8 °C	1,643 mm	2
1947	31.7 °C10 October 1947	10.6 °C25 July 1947	19.8 °C	1,477 mm	20
1946	33.2 °C31 March 1946	13.1 °C6 August 1946	20.1 °C	1,209 mm	19
1945	32.3 °C1 November 1945	13.4 °C28 June 1945	20.2 °C	998 mm	23
1944	32.3 °C16 October 1944	13.4 °C25 November 1944	20.8 °C	1,028 mm	36
1943	32.8 °C26 October 1943	10.6 °C27 July 1943	20.6 °C	704 mm	45
1942	32.2 °C1 October 1942	13.1 °C26 June 1942	20.2 °C	842 mm	14
1941	31.1 °C19 October 1941	12.6 °C29 December 1941	19.8 °C	1,253 mm	5
1940	28.3 °C12 October 1940	12.4 °C23 November 1940	19.0 °C	1,614 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

27.4 °C

+1.0 °C

Hot days (≥ 30 °C)

31 d/yr

+15

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1326 mm

-191 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	26.7 °C	+0.7 °C	138 mm	-12 mm
Feb	29.2 °C	+2.4 °C	37 mm	-95 mm
Mar	28.0 °C	+1.2 °C	186 mm	-4 mm
Apr	26.7 °C	+0.8 °C	191 mm	-25 mm
May	26.5 °C	+0.9 °C	99 mm	-31 mm
Jun	26.8 °C	+1.2 °C	46 mm	+0 mm
Jul	26.9 °C	+0.9 °C	48 mm	+19 mm
Aug	26.6 °C	-0.1 °C	92 mm	+49 mm
Sep	28.7 °C	+1.2 °C	62 mm	-0 mm
Oct	26.9 °C	-0.9 °C	187 mm	+85 mm
Nov	28.3 °C	+2.1 °C	39 mm	-168 mm
Dec	27.4 °C	+1.8 °C	202 mm	-9 mm

The year's extremes

Hottest day

32.1 °C

22 Feb 2025

Coldest day

14.4 °C

17 Aug 2025

Wettest day

44.9 mm

28 Dec 2025

Windiest day

22.1 km/h

1 Oct 2025

Strongest gust

46.8 km/h

1 Oct 2025

Hottest feels-like

34.1 °C

6 Mar 2025

Coldest feels-like

13.3 °C

31 Jul 2025

Sunniest day

12.0 h

31 Jan 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 Sirari?

Sirari has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 20.5 °C and it receives 1,516 mm of precipitation per year.

What is the hottest day ever recorded in Sirari?

The hottest day measured in Sirari between 1940 and 2025 was 25 September 1994, reaching 34.5 °C.

What is the coldest day in Sirari?

The coldest day measured in Sirari between 1940 and 2025 was 27 July 1943, at 10.6 °C.

Does it snow in Sirari?

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

Has the climate of Sirari warmed?

Yes: Sirari warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Sirari?

The wettest day measured in Sirari between 1940 and 2025 was 6 March 1953, with 105 mm of rain in 24 hours.

What was the windiest day in Sirari?

The windiest day measured in Sirari between 1940 and 2025 was 16 May 1947, with winds reaching 24.9 km/h.

What is the warmest month in Sirari?

The warmest month in Sirari is October (21.3 °C on average); the coldest is December (19.9 °C).

How much does it rain in Sirari?

Sirari receives on average 1,516 mm of precipitation per year, spread over about 196 rainy days.

Is it sunny in Sirari?

Sirari gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.

Are there tropical nights in Sirari?

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

What was the most extreme apparent temperature in Sirari?

In Sirari, between 1940 and 2025, the highest apparent temperature reached 35.7 °C on 20 February 2005, and the lowest was 7.9 °C on 27 July 1943.

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