Seattle weather in April 2026

Expect daytime maximum temperatures of 14°C in Seattle, Washington State in April based on long-term weather averages. There are 7 hours of sunshine per day on average with 13 days with some rainfall and typically 66 mm of rainfall in the month.

  • 14°C maximum daytime temperature in April in Seattle14
    14°C max day temperature
  • 7 hours of sunshine per day
  • 13 days with some rainfall in April in Seattle13
    13 days with some rainfall
  • 5°C minimum night-time temperature in April in Seattle5
    5°C min night temperature
  • 14 hours of daylight per day in April in Seattle14
    14 hours of daylight per day
  • No heat & humidity in April in Seattle0
    No heat & humidity
  • 66 mm monthly rainfall in April in Seattle66
    66 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in April in Seattle5
    5 (Moderate) UV index

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The April weather guide for Washington State (Seattle) 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 warm is it in Seattle in April?

Daytime temperatures usually reach 14°C in Seattle in April, falling to 5°C at night.

How sunny is it in Seattle in April?

There are normally 7 hours of bright sunshine each day in Seattle in April - that's 48% of daylight hours.

Does it rain in Seattle in April?

There are usually 13 days with some rain in Seattle in April and the average monthly rainfall is 66mm.

Seattle April sunrise & sunset times

Browse the sunrise and sunset times for Seattle in April 2026. Select a month to view Seattle sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st April 2026 05:48 18:40
Wednesday, 15th April 2026 05:20 18:59
Thursday, 30th April 2026 04:54 19:20

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