Longyearbyen weather in August 2025

Expect 6°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Longyearbyen in August. Check more long-term weather averages for Longyearbyen in August before you book your next holiday to Svalbard in 2025/2026.

  • 6°C maximum daytime temperature in August in Longyearbyen6
    6°C max day temperature
  • 5 hours of sunshine per day
  • 13 days with some rainfall in August in Longyearbyen13
    13 days with some rainfall
  • 2°C minimum night-time temperature in August in Longyearbyen2
    2°C min night temperature
  • 23 hours of daylight per day in August in Longyearbyen23
    23 hours of daylight per day
  • No heat & humidity in August in Longyearbyen0
    No heat & humidity
  • 30 mm monthly rainfall in August in Longyearbyen30
    30 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in August in Longyearbyen1
    1 (Low) UV index
  • -1°C sea temperature in August in Longyearbyen-1
    -1°C sea temperature

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The August weather guide for Svalbard, represented by Longyearbyen, (Longyearbyen) 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 cold is it in Longyearbyen in August?

Daytime temperatures usually reach 6°C in Longyearbyen in August, falling to 2°C at night.

How sunny is it in Longyearbyen in August?

There are normally 5 hours of bright sunshine each day in Longyearbyen in August - that's 23% of daylight hours.

Is the sea cold around Longyearbyen in August?

The average sea temperature around Longyearbyen in August is -1°C.

Does it rain in Longyearbyen in August?

There are usually 13 days with some rain in Longyearbyen in August and the average monthly rainfall is 30mm.

Longyearbyen August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 Daylight all day
Saturday, 16th August 2025 Daylight all day
Sunday, 31st August 2025 02:26 21:20

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