Seattle (WA) Climate by Month
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.
The graphs below provide an overview of the climate in Seattle (Washington State), the United States of America. They present long-term patterns and averages of weather conditions over a 30-year period.
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)
