Johannesburg weather in January 2026

Expect daytime maximum temperatures of 26°C in Johannesburg, South Africa in January based on long-term weather averages. There are 8 hours of sunshine per day on average with 14 days with some rainfall and typically 135 mm of rainfall in the month.

  • 26°C maximum daytime temperature in January in Johannesburg26
    26°C max day temperature
  • 8 hours of sunshine per day
  • 14 days with some rainfall in January in Johannesburg14
    14 days with some rainfall
  • 15°C minimum night-time temperature in January in Johannesburg15
    15°C min night temperature
  • 14 hours of daylight per day in January in Johannesburg14
    14 hours of daylight per day
  • Low heat & humidity in January in JohannesburgL
    Low heat & humidity
  • 135 mm monthly rainfall in January in Johannesburg135
    135 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Johannesburg11
    11+ (Extreme) UV index

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The January weather guide for South Africa (Johannesburg) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about South Africa

How hot is it in Johannesburg in January?

Daytime temperatures usually reach 25°C in Johannesburg in January with low heat and humidity, falling to 15°C at night.

How sunny is it in Johannesburg in January?

There are normally 11 hours of bright sunshine each day in Johannesburg in January - that's 77% of daylight hours.

How warm is the sea around Johannesburg in January?

The average sea temperature around Johannesburg in January is 19°C.

Does it rain in Johannesburg in January?

There are usually 5 days with some rain in Johannesburg in January and the average monthly rainfall is 32mm.

Johannesburg January sunrise & sunset times

Browse the sunrise and sunset times for Johannesburg in January 2026. Select a month to view Johannesburg sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 05:19 19:04
Friday, 16th January 2026 05:30 19:05
Saturday, 31st January 2026 05:42 19:00

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