2026 Climate Averages

Johannesburg: Weather Guide & Climate

Complete month-by-month weather guide: Johannesburg. Best time to visit: May, June, July, August, September. Plan your trip with detailed climate data.

Climate Overview

Johannesburg has a warm climate with average yearly highs of 22°C, lows of 10°C, and approximately 8 rainy days per month.

The best time to visit Johannesburg is during May, June, July, August, September, when temperatures are comfortable and rainfall is moderate

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Air Quality

Best Time

May, Jun, Jul, Aug, Sep

Conditions Excellent

Hottest

26°C January
Avg Low 15°
Rain 13d

Coldest

3°C June
Avg High 16°
Rain 2d

Driest Month

0 days May
Avg High 20°
Avg Low

Forecast for your trip dates

Up to 16 days ahead
Best months: May, Jun, Jul, Aug, SepHottest: Jan (26°C) • Driest: May (0d rain)
Monthly weather data
Month High Low Rainy days Condition
January 26°C 15°C 13 Wet
February 25°C 14°C 10 Good
March 23°C 12°C 11 Good
April 20°C 10°C 9 Good
May 20°C 6°C 0 Excellent (best)
June 16°C 3°C 2 Excellent (best)
July 17°C 3°C 0 Excellent (best)
August 19°C 5°C 0 Excellent (best)
September 24°C 9°C 3 Excellent (best)
October 26°C 13°C 8 Good
November 25°C 14°C 16 Wet
December 25°C 15°C 23 Wet

Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025

Weather by Season

Winter

Dec–Feb

High: 17°C

Low: 4°C

Rainy days: 1 days/month

Spring

Mar–May

High: 25°C

Low: 12°C

Rainy days: 9 days/month

Summer

Jun–Aug

High: 25°C

Low: 15°C

Rainy days: 15 days/month

Autumn

Sep–Nov

High: 21°C

Low: 9°C

Rainy days: 7 days/month

Month-by-Month Weather Table

Johannesburg

South Africa's economic hub with Apartheid Museum, Soweto township tours, Kruger safari gateway, and vibrant urban culture.

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Common Questions

What type of climate does Johannesburg have?

Johannesburg has a Warm climate with average yearly temperatures of 22°C (highs) and 10°C (lows).

When is the best time to visit Johannesburg?

The best time to visit Johannesburg is during May, June, July, August, September, when temperatures average around 20°C and conditions are ideal for sightseeing.

What are the hottest and coldest months in Johannesburg?

The hottest month in Johannesburg is January with average highs of 26°C, while the coldest is June with average lows of 3°C.

When is the rainy season in Johannesburg?

Johannesburg sees the most rain in December (23 rainy days), while May is the driest month (0 rainy days).

More Johannesburg Guides

Best Time to Visit

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Things to Do

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Itineraries

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Overview

Complete travel guide for Johannesburg: top things to do, itineraries, and typical costs.

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