Monthly Climate
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Best time to visit Johannesburg

September is the best time to visit Johannesburg for general sightseeing, with average highs of 24 °C and about 4 wet days. The comfortable season runs roughly February to May.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking September comfort 92/100
The least cloud July 12 % average cloud cover
The least rain July 3 mm
Warmth October 25 °C
Cooler weather June 16 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 September 92 24 °C 4
2 April 91 21 °C 7
3 March 87 23 °C 12
4 May 87 19 °C 3
5 October 86 25 °C 10
6 August 86 20 °C 2
7 February 84 24 °C 13
8 November 83 24 °C 13
9 January 80 25 °C 16
10 December 77 24 °C 18
11 June 76 16 °C 1
12 July 75 16 °C 1

When to think twice

July scores lowest with about 1 wet days and highs near 16 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

Month Avg high Rainfall Cloud
January 24.5 °C 128 mm 52 %
February 24.3 °C 110 mm 49 %
March 23.0 °C 87 mm 43 %
April 20.6 °C 45 mm 37 %
May 18.6 °C 17 mm 21 %
June 16.3 °C 8 mm 15 %
July 16.4 °C 3 mm 12 %
August 19.5 °C 10 mm 16 %
September 23.5 °C 22 mm 24 %
October 24.6 °C 73 mm 40 %
November 24.2 °C 97 mm 50 %
December 24.4 °C 132 mm 55 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. 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.