Biak weather in May 2025

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

  • 30°C maximum daytime temperature in May in Biak30
    30°C max day temperature
  • 5 hours of sunshine per day
  • 20 days with some rainfall in May in Biak20
    20 days with some rainfall
  • 23°C minimum night-time temperature in May in Biak23
    23°C min night temperature
  • 12 hours of daylight per day in May in Biak12
    12 hours of daylight per day
  • Very high heat & humidity in May in BiakVH
    Very High heat & humidity
  • 258 mm monthly rainfall in May in Biak258
    258 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Biak11
    11+ (Extreme) UV index
  • 29°C sea temperature in May in Biak29
    29°C sea temperature

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The May 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 May?

Daytime temperatures usually reach 30°C in Biak in May with very high heat and humidity, falling to 23°C at night.

How sunny is it in Biak in May?

There are normally 5 hours of bright sunshine each day in Biak in May - that's 44% of daylight hours.

How warm is the sea around Biak in May?

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

Does it rain in Biak in May?

There are usually 20 days with some rain in Biak in May and the average monthly rainfall is 258mm.

Biak May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:51 17:55
Friday, 16th May 2025 05:50 17:54
Saturday, 31st May 2025 05:52 17:55

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