Biak weather in October 2025

Expect 31°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Biak in October. Check more long-term weather averages for Biak in October before you book your next holiday to Indonesia in 2025/2026.

  • 31°C maximum daytime temperature in October in Biak31
    31°C max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in October in Biak17
    17 days with some rainfall
  • 23°C minimum night-time temperature in October in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in October in Biak12
    12 hours of daylight per day
  • Very high heat & humidity in October in BiakVH
    Very High heat & humidity
  • 200 mm monthly rainfall in October in Biak200
    200 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in October in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in October in Biak29
    29°C sea temperature

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The October 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 / mm)  |  Imperial (°F / inches)

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More about Indonesia

How hot is it in Biak in October?

Daytime temperatures usually reach 31°C in Biak in October with very high heat and humidity, falling to 23°C at night.

How sunny is it in Biak in October?

There are normally 5 hours of bright sunshine each day in Biak in October - that's 42% of daylight hours.

How warm is the sea around Biak in October?

The average sea temperature around Biak in October is 29°C.

Does it rain in Biak in October?

There are usually 17 days with some rain in Biak in October and the average monthly rainfall is 200mm.

Biak October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:42 17:49
Thursday, 16th October 2025 05:37 17:45
Friday, 31st October 2025 05:35 17:44

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