Biak weather in January 2026

Expect daytime maximum temperatures of 86°F in Biak, Indonesia in January and high heat and humidity based on long-term weather averages. There are 5 hours of sunshine per day on average with 21 days with some rainfall and typically 10.3 inches of rainfall in the month.

  • 86°F maximum daytime temperature in January in Biak86
    86°F max day temperature
  • 5 hours of sunshine per day
  • 21 days with some rainfall in January in Biak21
    21 days with some rainfall
  • 72°F minimum night-time temperature in January in Biak72
    72°F min night temperature
  • 12 hours of daylight per day in January in Biak12
    12 hours of daylight per day
  • High heat & humidity in January in BiakH
    High heat & humidity
  • 10.3 inches monthly rainfall in January in Biak10.3
    10.3 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Biak11
    11+ (Extreme) UV index
  • 84°F sea temperature in January in Biak84
    84°F sea temperature

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The January weather guide for Indonesia (Biak) 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)  |  Imperial (°F)

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How hot is it in Biak in January?

Daytime temperatures usually reach 86°F in Biak in January with high heat and humidity, falling to 72°F at night.

How sunny is it in Biak in January?

There are normally 5 hours of bright sunshine each day in Biak in January - that's 37% of daylight hours.

How warm is the sea around Biak in January?

The average sea temperature around Biak in January is 84°F.

Does it rain in Biak in January?

There are usually 21 days with some rain in Biak in January and the average monthly rainfall is 10.3 inches.

Biak January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 05:53 18:05
Friday, 16th January 2026 06:00 18:11
Saturday, 31st January 2026 06:04 18:14

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