Grootfontein climate — normals and trends

Q: What is the climate of Grootfontein?

Grootfontein has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 20.5 °C and it receives 679 mm of precipitation per year.

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

The hottest day measured in Grootfontein between 1940 and 2025 was 15 January 1949, reaching 38.6 °C.

Q: What is the coldest day in Grootfontein?

The coldest day measured in Grootfontein between 1940 and 2025 was 29 June 1994, at -1.2 °C.

Q: Does it snow in Grootfontein?

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

Q: Has the climate of Grootfontein warmed?

Yes: Grootfontein warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Grootfontein?

The wettest day measured in Grootfontein between 1940 and 2025 was 17 January 1955, with 95 mm of rain in 24 hours.

Q: What was the windiest day in Grootfontein?

The windiest day measured in Grootfontein between 1940 and 2025 was 22 August 2011, with winds reaching 35.1 km/h.

Q: What is the warmest month in Grootfontein?

The warmest month in Grootfontein is October (24.6 °C on average); the coldest is July (14.7 °C).

Q: How much does it rain in Grootfontein?

Grootfontein receives on average 679 mm of precipitation per year, spread over about 90 rainy days.

Q: Is it sunny in Grootfontein?

Grootfontein gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.

Grootfontein (Namibia) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 20.5 °C and it receives 679 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 (24.6 °C on average) and the coldest is July (14.7 °C). Rainfall peaks in January.

Grootfontein averages 0 frost days, 101 hot days (≥ 30 °C) and 90 rainy days per year.

Grootfontein has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.6 °C (on 15 January 1949) and the coldest -1.2 °C (on 29 June 1994).

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

GrootfonteinOtjozondjupa Region

coords: -19.57°, 18.10°
period: 1940–2025 · 86 yrs

BShHot semi-aridWarmest monthOctoberColdest monthJulyWettest monthJanuaryDriest monthJuly

Mean daily temperature

20.5°C

Average daily high

27.3°C

Average daily low

14.7°C

Annual rainfall

679mm

Sunshine / day

11.1h

Mean relative humidity

46%

Average peak wind

16.5km/h

Seasonal range

9.9°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

101 d/yr

Rainy days (≥ 1 mm)

90 d/yr

Annual snowfall

0.0 cm

Average feels-like high

26.7 °C

Average feels-like low

12.7 °C

Average peak gust

36.1 km/h

Tropical nights (≥ 20 °C)

27 d/yr

Solar radiation

22.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.2 °C

since 1940

+0.1 °C per decade · r² = 0.16 · 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

38.6 °C

15 January 1949

Coldest day

-1.2 °C

29 June 1994

Wettest day

95 mm

17 January 1955

Windiest day

35.1 km/h

22 August 2011

Strongest gust

68.0 km/h

2 October 1997

Hottest feels-like

38.6 °C

16 November 2005

Coldest feels-like

-7.1 °C

1 July 1994

Sunniest day

13.1 h

8 January 1949

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.8 °C21 October 2025	1.7 °C28 June 2025	20.8 °C	1,038 mm	113	0
2024	37.4 °C18 February 2024	2.0 °C3 June 2024	22.6 °C	416 mm	189	0
2023	37.1 °C12 December 2023	2.1 °C11 July 2023	22.1 °C	428 mm	167	0
2022	36.6 °C5 October 2022	2.0 °C22 May 2022	20.7 °C	678 mm	129	0
2021	35.5 °C4 November 2021	1.0 °C24 July 2021	20.3 °C	1,000 mm	104	0
2020	38.2 °C20 October 2020	3.3 °C14 June 2020	21.4 °C	764 mm	129	0
2019	37.5 °C24 October 2019	4.1 °C3 July 2019	23.1 °C	355 mm	205	0
2018	37.5 °C18 November 2018	4.0 °C4 July 2018	21.9 °C	574 mm	153	0
2017	36.6 °C16 October 2017	4.6 °C21 July 2017	20.7 °C	955 mm	104	0
2016	38.4 °C31 October 2016	3.5 °C27 July 2016	22.3 °C	503 mm	170	0
2015	38.2 °C16 November 2015	2.6 °C27 June 2015	22.6 °C	333 mm	193	0
2014	34.7 °C24 October 2014	1.1 °C7 June 2014	20.4 °C	848 mm	91	0
2013	36.0 °C2 February 2013	4.4 °C11 June 2013	21.7 °C	471 mm	166	0
2012	36.9 °C17 October 2012	0.6 °C8 August 2012	20.5 °C	717 mm	115	0
2011	36.2 °C23 October 2011	0.5 °C8 June 2011	19.5 °C	1,262 mm	64	0
2010	36.7 °C7 November 2010	0.6 °C17 June 2010	20.6 °C	911 mm	104	0
2009	36.2 °C14 November 2009	2.0 °C25 July 2009	20.5 °C	800 mm	99	0
2008	37.9 °C4 November 2008	3.5 °C5 July 2008	20.6 °C	823 mm	96	0
2007	37.0 °C18 January 2007	1.7 °C29 June 2007	21.4 °C	407 mm	150	0
2006	34.3 °C14 November 2006	1.6 °C3 August 2006	19.4 °C	1,077 mm	58	0
2005	37.9 °C17 November 2005	6.8 °C9 July 2005	21.9 °C	593 mm	151	0
2004	35.5 °C31 October 2004	2.5 °C28 July 2004	20.6 °C	659 mm	105	0
2003	36.1 °C13 December 2003	4.1 °C12 August 2003	21.3 °C	545 mm	135	0
2002	35.5 °C20 October 2002	2.6 °C25 June 2002	20.7 °C	652 mm	90	0
2001	35.4 °C23 December 2001	1.3 °C23 July 2001	20.5 °C	667 mm	134	0
2000	35.1 °C28 November 2000	4.8 °C6 June 2000	20.1 °C	727 mm	93	0
1999	35.4 °C6 November 1999	4.0 °C25 August 1999	20.6 °C	724 mm	78	0
1998	34.9 °C22 October 1998	3.2 °C5 July 1998	21.6 °C	562 mm	141	0
1997	34.9 °C14 December 1997	1.9 °C29 May 1997	20.2 °C	787 mm	75	0
1996	35.8 °C5 November 1996	-0.6 °C7 July 1996	20.9 °C	554 mm	99	1
1995	35.8 °C9 January 1995	3.1 °C7 August 1995	21.4 °C	416 mm	143	0
1994	36.0 °C19 December 1994	-1.2 °C29 June 1994	20.4 °C	612 mm	99	2
1993	35.2 °C1 November 1993	4.2 °C15 June 1993	20.5 °C	715 mm	78	0
1992	35.0 °C25 February 1992	3.0 °C9 August 1992	21.3 °C	415 mm	135	0
1991	33.5 °C7 October 1991	2.4 °C10 June 1991	20.1 °C	757 mm	52	0
1990	35.9 °C5 November 1990	4.6 °C23 June 1990	20.7 °C	758 mm	77	0
1989	36.2 °C22 December 1989	1.0 °C20 July 1989	20.4 °C	612 mm	97	0
1988	35.2 °C4 January 1988	0.3 °C11 July 1988	20.5 °C	813 mm	83	0
1987	36.0 °C26 November 1987	2.4 °C6 July 1987	21.2 °C	594 mm	129	0
1986	35.1 °C29 December 1986	4.6 °C27 June 1986	20.4 °C	761 mm	76	0
1985	35.1 °C30 December 1985	0.9 °C13 July 1985	20.2 °C	752 mm	83	0
1984	36.3 °C19 November 1984	2.4 °C22 July 1984	20.5 °C	529 mm	112	0
1983	35.4 °C16 November 1983	3.4 °C19 June 1983	20.6 °C	641 mm	106	0
1982	35.4 °C12 November 1982	-0.5 °C3 July 1982	20.2 °C	758 mm	99	1
1981	36.0 °C7 November 1981	2.7 °C15 June 1981	19.9 °C	491 mm	96	0
1980	34.8 °C4 December 1980	-0.3 °C30 June 1980	19.8 °C	566 mm	103	1
1979	34.7 °C4 October 1979	0.5 °C21 July 1979	19.9 °C	578 mm	81	0
1978	33.2 °C31 December 1978	-1.0 °C21 June 1978	19.1 °C	724 mm	67	1
1977	34.3 °C10 November 1977	2.8 °C24 June 1977	19.8 °C	896 mm	83	0
1976	34.3 °C22 December 1976	0.7 °C13 August 1976	18.7 °C	835 mm	65	0
1975	34.0 °C3 November 1975	3.4 °C10 June 1975	19.5 °C	407 mm	84	0
1974	32.9 °C5 December 1974	1.6 °C2 August 1974	18.2 °C	862 mm	31	0
1973	35.2 °C31 January 1973	3.7 °C18 July 1973	20.1 °C	639 mm	76	0
1972	34.9 °C27 November 1972	0.9 °C2 August 1972	19.7 °C	677 mm	94	0
1971	34.3 °C15 December 1971	3.5 °C3 August 1971	20.1 °C	688 mm	66	0
1970	36.4 °C14 January 1970	3.8 °C23 July 1970	20.9 °C	629 mm	117	0
1969	34.9 °C18 November 1969	3.6 °C21 July 1969	20.0 °C	819 mm	79	0
1968	35.6 °C18 October 1968	-0.5 °C15 June 1968	20.2 °C	602 mm	89	1
1967	34.9 °C21 October 1967	0.8 °C16 July 1967	18.9 °C	891 mm	42	0
1966	36.0 °C26 November 1966	5.3 °C30 May 1966	20.2 °C	686 mm	79	0
1965	35.4 °C29 October 1965	3.2 °C20 June 1965	19.9 °C	668 mm	55	0
1964	35.5 °C10 November 1964	0.5 °C19 June 1964	20.2 °C	507 mm	126	0
1963	33.3 °C13 October 1963	3.3 °C10 August 1963	19.2 °C	1,008 mm	62	0
1962	34.6 °C17 October 1962	3.6 °C29 August 1962	20.6 °C	570 mm	93	0
1961	35.1 °C22 October 1961	3.9 °C12 June 1961	20.2 °C	546 mm	96	0
1960	35.2 °C8 December 1960	2.7 °C22 July 1960	20.1 °C	549 mm	94	0
1959	35.3 °C19 November 1959	2.8 °C14 July 1959	20.8 °C	471 mm	112	0
1958	35.3 °C19 November 1958	3.6 °C17 June 1958	20.4 °C	760 mm	90	0
1957	34.3 °C30 September 1957	3.7 °C5 August 1957	20.1 °C	1,111 mm	63	0
1956	35.4 °C15 February 1956	3.0 °C13 June 1956	21.3 °C	311 mm	123	0
1955	33.2 °C15 December 1955	4.2 °C7 July 1955	19.5 °C	830 mm	68	0
1954	36.3 °C25 October 1954	4.1 °C23 June 1954	21.8 °C	234 mm	172	0
1953	35.9 °C1 November 1953	3.9 °C28 June 1953	19.8 °C	818 mm	73	0
1952	34.2 °C27 October 1952	4.5 °C4 August 1952	20.3 °C	685 mm	78	0
1951	34.3 °C6 October 1951	2.8 °C13 July 1951	19.3 °C	1,216 mm	49	0
1950	34.3 °C20 October 1950	4.9 °C8 July 1950	19.0 °C	1,087 mm	53	0
1949	38.6 °C15 January 1949	4.4 °C10 June 1949	21.5 °C	350 mm	139	0
1948	35.6 °C23 October 1948	5.5 °C21 June 1948	20.6 °C	658 mm	87	0
1947	36.0 °C10 October 1947	4.1 °C16 July 1947	21.0 °C	617 mm	95	0
1946	36.8 °C29 October 1946	4.8 °C18 June 1946	20.9 °C	506 mm	120	0
1945	36.1 °C26 October 1945	5.4 °C26 May 1945	20.9 °C	733 mm	76	0
1944	35.5 °C25 September 1944	5.9 °C26 July 1944	20.9 °C	684 mm	87	0
1943	35.7 °C3 December 1943	2.7 °C5 July 1943	19.9 °C	646 mm	66	0
1942	35.7 °C23 October 1942	3.3 °C23 July 1942	20.3 °C	651 mm	68	0
1941	37.1 °C17 October 1941	4.2 °C30 June 1941	21.0 °C	526 mm	123	0
1940	35.6 °C30 November 1940	2.1 °C17 June 1940	20.1 °C	668 mm	96	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

27.6 °C

+0.3 °C

Hot days (≥ 30 °C)

113 d/yr

+12

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1038 mm

+359 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.0 °C	+1.6 °C	99 mm	-73 mm
Feb	28.2 °C	+0.6 °C	250 mm	+102 mm
Mar	27.3 °C	+0.1 °C	102 mm	-3 mm
Apr	25.8 °C	-0.7 °C	161 mm	+123 mm
May	23.8 °C	-1.2 °C	2 mm	+1 mm
Jun	22.4 °C	0.0 °C	0 mm	+0 mm
Jul	24.2 °C	+1.7 °C	0 mm	-0 mm
Aug	27.4 °C	+1.4 °C	0 mm	-0 mm
Sep	32.2 °C	+2.2 °C	3 mm	-0 mm
Oct	33.1 °C	+1.4 °C	13 mm	-12 mm
Nov	29.6 °C	-0.9 °C	97 mm	+21 mm
Dec	27.5 °C	-2.3 °C	311 mm	+202 mm

The year's extremes

Hottest day

35.8 °C

21 Oct 2025

Coldest day

1.7 °C

28 Jun 2025

Wettest day

37.3 mm

11 Dec 2025

Windiest day

28.9 km/h

4 Sep 2025

Strongest gust

57.6 km/h

4 Sep 2025

Hottest feels-like

35.8 °C

21 Oct 2025

Coldest feels-like

-3.3 °C

10 Jun 2025

Sunniest day

13.0 h

16 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 Grootfontein?

Grootfontein has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 20.5 °C and it receives 679 mm of precipitation per year.

What is the hottest day ever recorded in Grootfontein?

The hottest day measured in Grootfontein between 1940 and 2025 was 15 January 1949, reaching 38.6 °C.

What is the coldest day in Grootfontein?

The coldest day measured in Grootfontein between 1940 and 2025 was 29 June 1994, at -1.2 °C.

Does it snow in Grootfontein?

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

Has the climate of Grootfontein warmed?

Yes: Grootfontein warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Grootfontein?

The wettest day measured in Grootfontein between 1940 and 2025 was 17 January 1955, with 95 mm of rain in 24 hours.

What was the windiest day in Grootfontein?

The windiest day measured in Grootfontein between 1940 and 2025 was 22 August 2011, with winds reaching 35.1 km/h.

What is the warmest month in Grootfontein?

The warmest month in Grootfontein is October (24.6 °C on average); the coldest is July (14.7 °C).

How much does it rain in Grootfontein?

Grootfontein receives on average 679 mm of precipitation per year, spread over about 90 rainy days.

Is it sunny in Grootfontein?

Grootfontein gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.

Are there tropical nights in Grootfontein?

Yes: Grootfontein has on average 27 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Grootfontein?

In Grootfontein, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 16 November 2005, and the lowest was -7.1 °C on 1 July 1994.

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