Benoni climate

Name: Benoni
Address: ZA

Benoni is warmest in October, with average highs of 25 °C, and coldest in July, when nights average 2.7 °C. December is the wettest month (126 mm) and July the driest (3.0 mm). Figures are 1991–2020 climate normals.

Across a full year Benoni averages 705 mm of rain, 107 days above 25 °C and 8 days below freezing.

South Africa · population 605,344 · 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 October 25 °C
Coldest month July 2.7 °C
Driest month July 3 mm
Wettest month December 126 mm
Least cloud July 12 % cloud
Hottest on record January 36 °C
Coldest on record July -4.6 °C

What to expectBenoni through the year

Benoni has a clear annual cycle: average daily highs run from 17 °C in July to 25 °C in October, a swing of 10 °C in mean temperature across the year.

Counted across a normal year, 107 days a year reach 25 °C, 9 of them reach 30 °C, 8 nights drop below freezing. The warmest reading in the 1991–2020 record is 36 °C, in January.

Rain is strongly seasonal. December averages 126 mm against 3 mm in July — 42 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	25.1 °C	123 mm	52 %
February	24.9 °C	104 mm	49 %
March	23.7 °C	81 mm	43 %
April	21.4 °C	41 mm	37 %
May	19.4 °C	15 mm	21 %
June	17.1 °C	7 mm	15 %
July	17.2 °C	3 mm	12 %
August	20.3 °C	10 mm	17 %
September	24.4 °C	22 mm	24 %
October	25.2 °C	74 mm	40 %
November	24.8 °C	97 mm	51 %
December	25.0 °C	126 mm	56 %

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	25.1 °C	14.8 °C	19.8 °C	36.4 °C	6.7 °C	16	1	0
February	24.9 °C	14.5 °C	19.6 °C	31.9 °C	9.6 °C	13	1	0
March	23.7 °C	13.1 °C	18.2 °C	31.4 °C	6.7 °C	10	0	0
April	21.4 °C	10.0 °C	15.5 °C	28.2 °C	1.3 °C	3	0	0
May	19.4 °C	6.4 °C	12.6 °C	27.3 °C	-3.0 °C	1	0	1
June	17.1 °C	3.4 °C	9.8 °C	23.8 °C	-3.9 °C	0	0	2
July	17.2 °C	2.7 °C	9.6 °C	24.2 °C	-4.6 °C	0	0	4
August	20.3 °C	5.4 °C	12.7 °C	28.0 °C	-3.2 °C	2	0	1
September	24.4 °C	9.2 °C	16.7 °C	31.7 °C	-1.3 °C	15	0	0
October	25.2 °C	11.6 °C	18.3 °C	34.4 °C	3.4 °C	17	3	0
November	24.8 °C	12.9 °C	18.7 °C	34.6 °C	3.8 °C	15	1	0
December	25.0 °C	14.4 °C	19.5 °C	34.8 °C	4.8 °C	15	2	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	123 mm	15	14 h/day	52 %	71 %	17 km/h
February	104 mm	12	13 h/day	49 %	70 %	16 km/h
March	81 mm	11	12 h/day	43 %	70 %	16 km/h
April	41 mm	6	11 h/day	37 %	66 %	16 km/h
May	15 mm	3	11 h/day	21 %	57 %	15 km/h
June	7 mm	1	11 h/day	15 %	55 %	16 km/h
July	3 mm	1	11 h/day	12 %	51 %	16 km/h
August	10 mm	2	11 h/day	17 %	46 %	19 km/h
September	22 mm	3	12 h/day	24 %	43 %	20 km/h
October	74 mm	10	13 h/day	40 %	54 %	20 km/h
November	97 mm	13	13 h/day	51 %	63 %	20 km/h
December	126 mm	17	14 h/day	56 %	69 %	18 km/h

How Benoni 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
Benoni	25 °C	2.7 °C	705 mm	107
Thembisa · South Africa	26 °C	3.5 °C	641 mm	121
Johannesburg · South Africa	25 °C	2.4 °C	731 mm	87
Centurion · South Africa	27 °C	4.6 °C	627 mm	152
Soweto · South Africa	25 °C	2.8 °C	729 mm	102
Pretoria · South Africa	28 °C	5.1 °C	627 mm	178
Krugersdorp · South Africa	25 °C	2.6 °C	664 mm	92

Where Benoni ranks

Ranking	Position	Value
The coolest places in Africa in May	7thof 50	19 °C
The coolest places in Africa in June	8thof 50	17 °C
The coolest places in Africa in July	10thof 50	17 °C
The coolest places in Africa in August	21stof 50	20 °C
Places with the best weather in Africa in September	28thof 50	91/100
Places with the best weather in Africa in April	36thof 50	93/100

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

QuestionsCommon questions about Benoni’s climate

When is the best time to visit Benoni?

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

How hot does Benoni get?

In October, the warmest month, daily highs average 25 °C. About 9 days a year pass 30 °C. The highest value in the 1991–2020 record is 36 °C.

How cold does it get in winter?

Nights average 2.7 °C in July, the coldest month. A normal year has 8 nights below freezing.

Which month is wettest in Benoni?

December, averaging 126 mm over 17 days with rain. The driest month is July with 3 mm. The year as a whole averages 705 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 Benoni 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
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.