Biak weather in August 2025

Expect 30°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Biak in August. Check more long-term weather averages for Biak in August before you book your next holiday to Indonesia in 2025/2026.

  • 30°C maximum daytime temperature in August in Biak30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 20 days with some rainfall in August in Biak20
    20 days with some rainfall
  • 22°C minimum night-time temperature in August in Biak22
    22°C min night temperature
  • 12 hours of daylight per day in August in Biak12
    12 hours of daylight per day
  • High heat & humidity in August in BiakH
    High heat & humidity
  • 230 mm monthly rainfall in August in Biak230
    230 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in August in Biak29
    29°C sea temperature

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The August 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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How hot is it in Biak in August?

Daytime temperatures usually reach 30°C in Biak in August with high heat and humidity, falling to 22°C at night.

How sunny is it in Biak in August?

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

How warm is the sea around Biak in August?

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

Does it rain in Biak in August?

There are usually 20 days with some rain in Biak in August and the average monthly rainfall is 230mm.

Biak August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 06:00 18:04
Saturday, 16th August 2025 05:58 18:02
Sunday, 31st August 2025 05:53 17:59

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