South Australia weather in January 2026

Expect 29°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in South Australia in January based on long-term weather averages. There is usually 6 days with some rainfall and 19 mm of average monthly rainfall in January.

  • 29°C maximum daytime temperature in January in South Australia (Adelaide)29
    29°C max day temperature
  • 10 hours of sunshine per day
  • 6 days with some rainfall in January in South Australia (Adelaide)6
    6 days with some rainfall
  • 16°C minimum night-time temperature in January in South Australia (Adelaide)16
    16°C min night temperature
  • 14 hours of daylight per day in January in South Australia (Adelaide)14
    14 hours of daylight per day
  • Low heat & humidity in January in South Australia (Adelaide)L
    Low heat & humidity
  • 19 mm monthly rainfall in January in South Australia (Adelaide)19
    19 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in South Australia (Adelaide)11
    11+ (Extreme) UV index
  • 21°C sea temperature in January in South Australia (Adelaide)21
    21°C sea temperature

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The January weather guide for South Australia (Adelaide) 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.

Top South Australia destinations

Below are average maximum temperatures at popular countries, regions and places in South Australia in January. Select a holiday destination to see more weather parameters.

All South Australia destinations

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

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More about Australia

How hot is it in South Australia in January?

Daytime temperatures usually reach 29°C in Adelaide, South Australia in January with low heat and humidity, falling to 16°C at night.

How sunny is it in South Australia in January?

There are normally 10 hours of bright sunshine each day in Adelaide, South Australia in January - that's 72% of daylight hours.

How warm is the sea around South Australia in January?

The average sea temperature around Adelaide, South Australia in January is 21°C.

Does it rain in South Australia in January?

There are usually 6 days with some rain in Adelaide, South Australia in January and the average monthly rainfall is 19mm.

South Australia January sunrise & sunset times

Browse the sunrise and sunset times for South Australia in January 2026. Select a month to view South Australia sunrise and sunset times for the next 12 months. The South Australia sunrise and sunset times shown below are for Adelaide.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 05:05 19:33
Friday, 16th January 2026 05:18 19:32
Saturday, 31st January 2026 05:34 19:24

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