Welkom climate

Name: Welkom
Address: ZA

Welkom is warmest in January, with average highs of 29 °C, and coldest in July, when nights average 2.1 °C. January is the wettest month (93 mm) and July the driest (6.3 mm). Figures are 1991–2020 climate normals.

Across a full year Welkom averages 548 mm of rain, 176 days above 25 °C and 16 days below freezing.

South Africa · population 431,944 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month January 29 °C
Coldest month July 2.1 °C
Driest month July 6 mm
Wettest month January 93 mm
Least cloud July 13 % cloud
Hottest on record January 40 °C
Coldest on record July -6.0 °C

What to expectWelkom through the year

Welkom has a clear annual cycle: average daily highs run from 17 °C in July to 29 °C in January, a swing of 14 °C in mean temperature across the year.

Counted across a normal year, 176 days a year reach 25 °C, 62 of them reach 30 °C, 16 nights drop below freezing. The warmest reading in the 1991–2020 record is 40 °C, in January.

Rain is strongly seasonal. January averages 93 mm against 6 mm in July — 15 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	29.3 °C	93 mm	41 %
February	28.3 °C	73 mm	40 %
March	26.7 °C	66 mm	37 %
April	23.3 °C	44 mm	32 %
May	20.2 °C	20 mm	23 %
June	17.1 °C	12 mm	16 %
July	17.3 °C	6 mm	13 %
August	20.6 °C	15 mm	17 %
September	25.2 °C	13 mm	23 %
October	27.3 °C	51 mm	34 %
November	28.1 °C	66 mm	38 %
December	29.1 °C	89 mm	41 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	29.3 °C	16.9 °C	23.0 °C	40.3 °C	7.3 °C	27	13	0
February	28.3 °C	16.5 °C	22.3 °C	36.1 °C	9.6 °C	24	9	0
March	26.7 °C	14.7 °C	20.4 °C	34.7 °C	6.5 °C	22	5	0
April	23.3 °C	10.7 °C	16.7 °C	31.8 °C	0.4 °C	9	0	0
May	20.2 °C	6.3 °C	13.0 °C	29.0 °C	-3.8 °C	1	0	1
June	17.1 °C	2.7 °C	9.5 °C	25.5 °C	-4.2 °C	0	0	5
July	17.3 °C	2.1 °C	9.4 °C	25.5 °C	-6.0 °C	0	0	8
August	20.6 °C	4.7 °C	12.5 °C	30.2 °C	-4.2 °C	4	0	2
September	25.2 °C	9.0 °C	17.2 °C	33.6 °C	-1.2 °C	17	3	0
October	27.3 °C	12.2 °C	19.7 °C	35.5 °C	2.5 °C	22	8	0
November	28.1 °C	13.9 °C	21.0 °C	36.7 °C	4.7 °C	23	11	0
December	29.1 °C	16.0 °C	22.4 °C	38.2 °C	5.2 °C	27	13	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	93 mm	12	14 h/day	41 %	57 %	19 km/h
February	73 mm	11	13 h/day	40 %	61 %	17 km/h
March	66 mm	9	12 h/day	37 %	62 %	16 km/h
April	44 mm	7	11 h/day	32 %	62 %	15 km/h
May	20 mm	3	11 h/day	23 %	58 %	14 km/h
June	12 mm	2	10 h/day	16 %	57 %	14 km/h
July	6 mm	1	11 h/day	13 %	51 %	15 km/h
August	15 mm	2	11 h/day	17 %	44 %	17 km/h
September	13 mm	2	12 h/day	23 %	38 %	19 km/h
October	51 mm	7	13 h/day	34 %	45 %	20 km/h
November	66 mm	9	14 h/day	38 %	49 %	21 km/h
December	89 mm	12	14 h/day	41 %	55 %	20 km/h

How Welkom compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Welkom	29 °C	2.1 °C	548 mm	176
Klerksdorp · South Africa	29 °C	3.0 °C	569 mm	194
Bloemfontein · South Africa	30 °C	1.7 °C	519 mm	174
Botshabelo · South Africa	29 °C	1.4 °C	602 mm	154
Potchefstroom · South Africa	28 °C	3.3 °C	620 mm	186
Maseru · Lesotho	27 °C	-0.9 °C	851 mm	107
Vereeniging · South Africa	27 °C	2.7 °C	708 mm	151

Where Welkom ranks

Ranking	Position	Value
The coolest places in Africa in June	9th of 50	17 °C
The coolest places in Africa in July	12th of 50	17 °C
The coolest places in Africa in May	16th of 50	20 °C
Places with the best weather in Africa in April	22nd of 50	94/100
The coolest places in Africa in August	30th of 50	21 °C

Planning a trip? See the best time to visit Welkom.

QuestionsCommon questions about Welkom’s climate

When is the best time to visit Welkom?

That depends on what you want, so the honest answer is a comparison rather than a single month. March, October, November sit closest to 20 °C on average, January is the warmest month and July the driest. The month-by-month table above has the full picture.

How hot does Welkom get?

In January, the warmest month, daily highs average 29 °C. About 62 days a year pass 30 °C. The highest value in the 1991–2020 record is 40 °C.

How cold does it get in winter?

Nights average 2.1 °C in July, the coldest month. A normal year has 16 nights below freezing.

Which month is wettest in Welkom?

January, averaging 93 mm over 12 days with rain. The driest month is July with 6 mm. The year as a whole averages 548 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Welkom rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: -27.977°, 26.735° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.