Best year time to visit Attu

General weather information about Attu

Average annual temperature is -4.8 °C

Absolute maximum temperature: 19.5 °C

Absolute minimum temperature: -33.9 °C

Number of sunny days: 166 days

Number of rainy days: 95 days

Number of snow days: 104 days

Look at detailed online map of Attu

* Weather data for Attu Greenland is based on climate observations for 2026 year

Attu air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)-6.2-7.9-0.42.53.915.118.819.58.55.44.83.2
Average daytime temperature (°C)-14.2-17.9-9.0-3.80.45.111.811.54.7-0.4-3.0-9.9
Average temperature (°C)-17.4-21.4-11.8-5.9-1.52.78.48.42.8-3.3-6.4-13.5
Average night temperature (°C)-20.4-24.9-14.5-8.1-3.70.45.55.71.0-6.2-9.7-16.5
Absolute minimum temperature (°C)-28.6-33.9-22.6-17.7-9.4-7.02.12.1-3.0-13.3-16.3-25.2

Attu monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)5.09.013.017.024.024.024.019.015.011.07.02.0
Daylight mean duration (h)3.27.811.715.820.824.022.717.413.29.35.00.5
Daylight minimum duration (h)0.05.09.013.017.024.019.015.011.07.02.00.0
Sunshine mean duration (h)0.33.06.66.15.67.84.96.14.82.90.40.0
Precipitation (mm)28841555861605554761027
Sunny days10132522124101110141718
Rainy days0103914212018621
Snow days2114651012002111112

Attu - weather forecast by months

Attu weather in januaryAttu weather in februaryAttu weather in marchAttu weather in aprilAttu weather in mayAttu weather in juneAttu weather in julyAttu weather in augustAttu weather in septemberAttu weather in octoberAttu weather in novemberAttu weather in december

Best time to visit Attu:

The best time to visit Attu during the most sunny months:

  • March — 6.6(h)
  • April — 6.1(h)
  • May — 5.6(h)
  • June — 7.8(h)
  • August — 6.1(h)

Months with the longest average daylight duration in Attu:

  • April — 15.8(h)
  • May — 20.8(h)
  • June — 24.0(h)
  • July — 22.7(h)
  • August — 17.4(h)

The largest precipitation sum in Attu is at

  • June — 86(mm)
  • July — 160(mm)
  • October — 76(mm)

    • Weather forecast in the closest to Attu admin centers

    Weather forecast in the closest towns to Attu

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    Frequently asked questions

    When is the best time to visit Attu?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Attu.
    What is the weather like in Attu?
    See average temperature, rainfall and daylight hours for Attu by month in the table above.
    How many sunny days does Attu have?
    The monthly weather statistics above show sunshine and rainfall patterns for Attu throughout the year.