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United States of AmericaUnited States of America Washington State Seattle
Seattle
Weather averages
ClimateForecastAprilMay >>

Climate in Seattle (Washington State), United States of America

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly hours of sunshine

The average monthly total hours of sunshine over the year

Daily percent of sunshine

The mean percent of hours of sunhours during the day over the year

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average humidity

The mean monthly relative humidity over the year

Average wind speed

The mean monthly wind speed over the year (in meters per second)

Weather Forecasts for Seattle (WA)

Thu   Apr 25
12°C | 8°C
S 22 km/h
20 mm
overcast and heavy rain

overcast and heavy rain

hourly forecast
Fri   Apr 26
15°C | 9°C
W 18 km/h
4.8 mm
broken clouds and rain

broken clouds and rain

hourly forecast
Sat   Apr 27
12°C | 8°C
SW 22 km/h
2.7 mm
overcast and rain

overcast and rain

hourly forecast
5-Day Forecast 10-Day Forecast

The best time of year to visit Seattle in the United States of America

Seattle has a temperate climate and experiences warm summers and mild winters. Most rain in Seattle is seen in winter and on an annual base the city experiences a large amount of rainfall making it one of the wettest cities in the country.

Winters in Seattle have an average maximum temperature of between 8°C and 11°C, so snowfall is rare. Summers have an average maximum temperature of 20°C to 25°C.

The best time to travel to Seattle in Washington State is from May to September. During this period you have a pleasant temperature and almost no precipitation. The city can be a bit busy during this period so it is recommended to book a place to stay in advance.

During the months of June, July, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • Which is the warmest month in Seattle?
    July has an average maximum temperature of 25°C and is the warmest month of the year.
  • Which is the coldest month in Seattle?
    The coldest month is December with an average maximum temperature of 8°C.
  • Which is the wettest month in Seattle?
    November tops the wettest month list with 166 mm of rainfall.
  • Which is the driest month in Seattle?
    July is the driest month with 14 mm of precipitation.
  • Which is the sunniest month in Seattle?
    July is the sunniest month with an average of 312 hours of sunshine.

    • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

     

     

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