Johannesburg weather in December 2025

Expect 26°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Johannesburg in December based on long-term weather averages. There is usually 14 days with some rainfall and 113 mm of average monthly rainfall in December.

  • 26°C maximum daytime temperature in December in Johannesburg26
    26°C max day temperature
  • 9 hours of sunshine per day
  • 14 days with some rainfall in December in Johannesburg14
    14 days with some rainfall
  • 14°C minimum night-time temperature in December in Johannesburg14
    14°C min night temperature
  • 14 hours of daylight per day in December in Johannesburg14
    14 hours of daylight per day
  • Low heat & humidity in December in JohannesburgL
    Low heat & humidity
  • 113 mm monthly rainfall in December in Johannesburg113
    113 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Johannesburg11
    11+ (Extreme) UV index

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The December 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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How hot is it in Johannesburg in December?

Daytime temperatures usually reach 26°C in Johannesburg in December with low heat and humidity, falling to 14°C at night.

How sunny is it in Johannesburg in December?

There are normally 9 hours of bright sunshine each day in Johannesburg in December - that's 63% of daylight hours.

Does it rain in Johannesburg in December?

There are usually 14 days with some rain in Johannesburg in December and the average monthly rainfall is 113mm.

Johannesburg December sunrise & sunset times

Browse the sunrise and sunset times for Johannesburg in December 2025. Select a month to view Johannesburg sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 05:07 18:47
Tuesday, 16th December 2025 05:10 18:57
Wednesday, 31st December 2025 05:18 19:03

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