Siyabuswa climate — normals and trends

Q: What is the climate of Siyabuswa?

Siyabuswa has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 20.1 °C and it receives 556 mm of precipitation per year.

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

The hottest day measured in Siyabuswa between 1940 and 2025 was 7 January 2016, reaching 41.8 °C.

Q: What is the coldest day in Siyabuswa?

The coldest day measured in Siyabuswa between 1940 and 2025 was 27 June 1964, at -1.3 °C.

Q: Does it snow in Siyabuswa?

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

Q: Has the climate of Siyabuswa warmed?

Yes: Siyabuswa warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Siyabuswa?

The wettest day measured in Siyabuswa between 1940 and 2025 was 25 February 1956, with 84 mm of rain in 24 hours.

Q: What was the windiest day in Siyabuswa?

The windiest day measured in Siyabuswa between 1940 and 2025 was 23 September 1941, with winds reaching 39.3 km/h.

Q: What is the warmest month in Siyabuswa?

The warmest month in Siyabuswa is January (24.6 °C on average); the coldest is June (13.2 °C).

Q: How much does it rain in Siyabuswa?

Siyabuswa receives on average 556 mm of precipitation per year, spread over about 80 rainy days.

Q: Is it sunny in Siyabuswa?

Siyabuswa gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.

Siyabuswa (South Africa) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 20.1 °C and it receives 556 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 January (24.6 °C on average) and the coldest is June (13.2 °C). Rainfall peaks in December.

Siyabuswa averages 0 frost days, 118 hot days (≥ 30 °C) and 80 rainy days per year.

Siyabuswa 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 41.8 °C (on 7 January 2016) and the coldest -1.3 °C (on 27 June 1964).

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

SiyabuswaMpumalanga

coords: -25.11°, 29.04°
period: 1940–2025 · 86 yrs

BShHot semi-aridWarmest monthJanuaryColdest monthJuneWettest monthDecemberDriest monthJuly

Mean daily temperature

20.1°C

Average daily high

27.4°C

Average daily low

14.4°C

Annual rainfall

556mm

Sunshine / day

10.9h

Mean relative humidity

57%

Average peak wind

13.6km/h

Seasonal range

11.4°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

118 d/yr

Rainy days (≥ 1 mm)

80 d/yr

Annual snowfall

0.0 cm

Average feels-like high

27.5 °C

Average feels-like low

13.7 °C

Average peak gust

29.5 km/h

Tropical nights (≥ 20 °C)

51 d/yr

Solar radiation

20.2 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.6 °C

since 1940

+0.2 °C per decade · r² = 0.42 · 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

41.8 °C

7 January 2016

Coldest day

-1.3 °C

27 June 1964

Wettest day

84 mm

25 February 1956

Windiest day

39.3 km/h

23 September 1941

Strongest gust

74.2 km/h

17 February 2017

Hottest feels-like

42.2 °C

11 January 2001

Coldest feels-like

-4.9 °C

27 June 1964

Sunniest day

13.6 h

26 December 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	36.2 °C15 October 2025	1.6 °C31 July 2025	20.5 °C	909 mm	112	0
2024	39.6 °C4 December 2024	-0.8 °C7 July 2024	21.8 °C	342 mm	181	1
2023	38.6 °C28 January 2023	3.3 °C21 June 2023	21.2 °C	468 mm	168	0
2022	39.0 °C4 October 2022	2.6 °C14 June 2022	20.8 °C	626 mm	128	0
2021	37.7 °C11 March 2021	1.5 °C23 July 2021	20.6 °C	579 mm	126	0
2020	36.8 °C20 October 2020	0.7 °C16 July 2020	20.5 °C	560 mm	119	0
2019	39.6 °C21 October 2019	2.3 °C3 July 2019	22.0 °C	421 mm	174	0
2018	39.2 °C19 September 2018	4.5 °C25 July 2018	21.3 °C	346 mm	156	0
2017	37.7 °C7 November 2017	3.5 °C9 June 2017	20.6 °C	536 mm	132	0
2016	41.8 °C7 January 2016	3.1 °C28 July 2016	21.3 °C	496 mm	159	0
2015	40.0 °C11 November 2015	2.1 °C18 July 2015	21.9 °C	316 mm	185	0
2014	38.5 °C9 October 2014	1.5 °C7 June 2014	20.4 °C	600 mm	129	0
2013	38.0 °C12 October 2013	4.1 °C20 June 2013	20.6 °C	491 mm	140	0
2012	37.5 °C4 March 2012	1.9 °C13 August 2012	20.5 °C	475 mm	144	0
2011	38.6 °C24 October 2011	2.3 °C28 June 2011	20.1 °C	629 mm	122	0
2010	38.7 °C13 February 2010	1.7 °C17 June 2010	20.5 °C	609 mm	153	0
2009	37.8 °C8 October 2009	3.1 °C26 July 2009	20.0 °C	605 mm	113	0
2008	38.2 °C3 November 2008	2.6 °C7 July 2008	20.2 °C	530 mm	124	0
2007	37.0 °C21 February 2007	0.7 °C24 May 2007	20.3 °C	366 mm	141	0
2006	36.5 °C24 October 2006	1.3 °C6 August 2006	19.9 °C	642 mm	98	0
2005	39.3 °C3 November 2005	4.9 °C7 July 2005	21.2 °C	416 mm	157	0
2004	39.0 °C15 January 2004	2.5 °C16 July 2004	20.2 °C	520 mm	111	0
2003	39.0 °C14 December 2003	3.0 °C21 August 2003	21.3 °C	386 mm	177	0
2002	38.7 °C19 October 2002	3.6 °C22 July 2002	20.8 °C	336 mm	152	0
2001	40.5 °C11 January 2001	1.9 °C20 July 2001	20.3 °C	520 mm	130	0
2000	36.2 °C19 October 2000	0.1 °C17 July 2000	19.2 °C	827 mm	82	0
1999	39.5 °C1 March 1999	2.8 °C1 July 1999	20.4 °C	569 mm	126	0
1998	36.7 °C3 February 1998	2.6 °C6 July 1998	20.6 °C	493 mm	141	0
1997	39.4 °C29 September 1997	1.9 °C17 June 1997	19.9 °C	562 mm	117	0
1996	37.0 °C4 November 1996	1.9 °C9 July 1996	19.9 °C	629 mm	110	0
1995	39.1 °C12 October 1995	2.2 °C17 June 1995	20.1 °C	518 mm	125	0
1994	36.4 °C9 November 1994	-0.2 °C6 July 1994	19.6 °C	433 mm	105	1
1993	39.9 °C31 October 1993	1.5 °C22 June 1993	20.8 °C	442 mm	139	0
1992	40.1 °C26 February 1992	0.8 °C6 July 1992	21.2 °C	315 mm	184	0
1991	36.4 °C7 October 1991	2.0 °C11 July 1991	20.4 °C	476 mm	135	0
1990	38.2 °C14 November 1990	1.6 °C14 July 1990	20.4 °C	370 mm	135	0
1989	37.5 °C1 November 1989	1.2 °C26 July 1989	20.3 °C	500 mm	110	0
1988	38.1 °C31 January 1988	1.2 °C11 June 1988	20.4 °C	475 mm	135	0
1987	37.8 °C20 February 1987	1.4 °C25 June 1987	20.6 °C	631 mm	151	0
1986	36.9 °C13 January 1986	3.7 °C30 June 1986	20.6 °C	497 mm	141	0
1985	38.1 °C4 January 1985	2.3 °C13 July 1985	20.3 °C	496 mm	132	0
1984	37.5 °C3 March 1984	3.2 °C20 June 1984	20.5 °C	457 mm	140	0
1983	40.0 °C11 January 1983	2.0 °C27 June 1983	20.7 °C	563 mm	135	0
1982	37.5 °C26 November 1982	-0.8 °C17 June 1982	20.5 °C	406 mm	140	1
1981	39.8 °C6 November 1981	-0.2 °C17 June 1981	19.5 °C	552 mm	105	1
1980	36.7 °C16 October 1980	1.1 °C24 June 1980	19.3 °C	587 mm	81	0
1979	36.2 °C1 October 1979	1.2 °C25 July 1979	19.9 °C	633 mm	132	0
1978	37.1 °C29 September 1978	1.3 °C28 June 1978	20.1 °C	511 mm	123	0
1977	37.8 °C15 January 1977	3.0 °C5 July 1977	20.0 °C	637 mm	117	0
1976	36.6 °C24 November 1976	1.2 °C21 June 1976	19.0 °C	658 mm	76	0
1975	36.5 °C16 October 1975	3.0 °C25 July 1975	19.2 °C	655 mm	78	0
1974	37.2 °C5 November 1974	0.6 °C2 August 1974	19.3 °C	606 mm	85	0
1973	38.2 °C23 January 1973	3.5 °C4 July 1973	19.9 °C	677 mm	118	0
1972	39.3 °C30 December 1972	0.1 °C2 August 1972	19.9 °C	511 mm	117	0
1971	35.8 °C26 December 1971	0.8 °C18 July 1971	19.0 °C	797 mm	66	0
1970	38.3 °C1 March 1970	2.3 °C7 July 1970	20.4 °C	577 mm	135	0
1969	40.1 °C13 January 1969	1.1 °C24 July 1969	19.7 °C	708 mm	99	0
1968	40.1 °C5 January 1968	-1.2 °C15 June 1968	19.2 °C	561 mm	118	2
1967	35.9 °C16 November 1967	-0.4 °C13 June 1967	19.1 °C	556 mm	97	1
1966	37.2 °C29 November 1966	2.3 °C16 July 1966	20.1 °C	535 mm	114	0
1965	37.4 °C31 October 1965	-0.2 °C26 June 1965	19.6 °C	302 mm	112	1
1964	38.3 °C29 February 1964	-1.3 °C27 June 1964	19.7 °C	595 mm	129	5
1963	37.7 °C29 December 1963	-0.8 °C16 July 1963	19.4 °C	532 mm	112	2
1962	38.5 °C17 October 1962	3.2 °C11 July 1962	20.4 °C	660 mm	140	0
1961	40.0 °C24 October 1961	3.3 °C4 August 1961	20.2 °C	579 mm	126	0
1960	36.9 °C28 October 1960	2.0 °C25 July 1960	19.3 °C	734 mm	95	0
1959	37.1 °C17 October 1959	4.2 °C20 June 1959	19.5 °C	597 mm	107	0
1958	36.3 °C16 November 1958	2.0 °C17 June 1958	19.8 °C	921 mm	106	0
1957	35.9 °C15 February 1957	1.4 °C20 June 1957	19.7 °C	696 mm	96	0
1956	35.5 °C15 October 1956	1.7 °C15 June 1956	19.4 °C	663 mm	72	0
1955	35.7 °C9 October 1955	-0.5 °C29 June 1955	18.5 °C	650 mm	59	2
1954	38.6 °C26 October 1954	1.6 °C18 July 1954	20.4 °C	217 mm	159	0
1953	39.2 °C23 January 1953	0.9 °C1 July 1953	20.1 °C	437 mm	109	0
1952	38.6 °C20 November 1952	1.8 °C4 July 1952	20.0 °C	574 mm	105	0
1951	38.3 °C9 October 1951	1.9 °C14 July 1951	19.6 °C	700 mm	104	0
1950	37.5 °C30 December 1950	3.5 °C27 May 1950	20.2 °C	407 mm	106	0
1949	35.8 °C10 February 1949	3.0 °C5 July 1949	19.0 °C	761 mm	75	0
1948	36.4 °C24 November 1948	2.5 °C23 July 1948	19.1 °C	714 mm	64	0
1947	38.8 °C8 October 1947	1.6 °C13 July 1947	19.2 °C	719 mm	76	0
1946	36.6 °C29 October 1946	1.7 °C1 July 1946	19.5 °C	601 mm	78	0
1945	37.0 °C7 November 1945	0.7 °C30 June 1945	19.4 °C	544 mm	73	0
1944	37.1 °C26 September 1944	2.7 °C24 July 1944	19.0 °C	848 mm	43	0
1943	37.0 °C10 October 1943	2.5 °C21 July 1943	19.1 °C	647 mm	43	0
1942	34.4 °C11 September 1942	0.8 °C21 July 1942	18.9 °C	803 mm	43	0
1941	38.8 °C15 October 1941	1.3 °C6 July 1941	20.8 °C	323 mm	137	0
1940	39.1 °C14 November 1940	0.3 °C16 July 1940	20.7 °C	445 mm	136	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

0.0 °C

Hot days (≥ 30 °C)

112 d/yr

-6

Frost days (< 0 °C)

0 d/yr

Annual rainfall

909 mm

+353 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.4 °C	-0.3 °C	215 mm	+125 mm
Feb	29.9 °C	-0.5 °C	200 mm	+127 mm
Mar	29.0 °C	-0.3 °C	29 mm	-34 mm
Apr	25.6 °C	-1.4 °C	74 mm	+33 mm
May	25.2 °C	+0.6 °C	2 mm	-12 mm
Jun	23.2 °C	+1.3 °C	0 mm	-5 mm
Jul	22.9 °C	+1.0 °C	1 mm	-2 mm
Aug	27.1 °C	+2.1 °C	24 mm	+18 mm
Sep	30.4 °C	+1.7 °C	34 mm	+16 mm
Oct	29.4 °C	-0.6 °C	59 mm	+11 mm
Nov	26.8 °C	-2.8 °C	178 mm	+88 mm
Dec	28.9 °C	-1.2 °C	92 mm	-9 mm

The year's extremes

Hottest day

36.2 °C

15 Oct 2025

Coldest day

1.6 °C

31 Jul 2025

Wettest day

80.7 mm

19 Feb 2025

Windiest day

31.1 km/h

6 Sep 2025

Strongest gust

64.4 km/h

6 Sep 2025

Hottest feels-like

38.5 °C

31 Jan 2025

Coldest feels-like

-1.3 °C

31 Jul 2025

Sunniest day

13.6 h

16 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 Siyabuswa?

Siyabuswa has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 20.1 °C and it receives 556 mm of precipitation per year.

What is the hottest day ever recorded in Siyabuswa?

The hottest day measured in Siyabuswa between 1940 and 2025 was 7 January 2016, reaching 41.8 °C.

What is the coldest day in Siyabuswa?

The coldest day measured in Siyabuswa between 1940 and 2025 was 27 June 1964, at -1.3 °C.

Does it snow in Siyabuswa?

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

Has the climate of Siyabuswa warmed?

Yes: Siyabuswa warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Siyabuswa?

The wettest day measured in Siyabuswa between 1940 and 2025 was 25 February 1956, with 84 mm of rain in 24 hours.

What was the windiest day in Siyabuswa?

The windiest day measured in Siyabuswa between 1940 and 2025 was 23 September 1941, with winds reaching 39.3 km/h.

What is the warmest month in Siyabuswa?

The warmest month in Siyabuswa is January (24.6 °C on average); the coldest is June (13.2 °C).

How much does it rain in Siyabuswa?

Siyabuswa receives on average 556 mm of precipitation per year, spread over about 80 rainy days.

Is it sunny in Siyabuswa?

Siyabuswa gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.

Are there tropical nights in Siyabuswa?

Yes: Siyabuswa has on average 51 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Siyabuswa?

In Siyabuswa, between 1940 and 2025, the highest apparent temperature reached 42.2 °C on 11 January 2001, and the lowest was -4.9 °C on 27 June 1964.

Compare Siyabuswa with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around Siyabuswa

Other cities — South Africa

All cities in South Africa →