Sequim (WA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sequim.
Climate overview of Sequim
The climate in Sequim, Washington State, United States of America, is marked by large temperature swings across the seasons, ranging from 23°C (73°F) in August to 7°C (45°F) in December.
Annual rain/snowfall is moderate at around 546 mm (21 in), with November being the wettest month. The city also has a distinct dry season from April to September, with warm summers and cold winters. The most sunshine falls in July, with an average of 11.0 hours of daily sunshine.
Sequim Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sequim - and find the best time to visit.
Monthly Temperature in Sequim
In Sequim, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 23°C (73°F) in August. In December, the coolest month of the year, temperatures drop to a chilly 7°C (45°F).
At night, temperatures range from around 11°C (52°F) in August to 0°C (32°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sequim
On average, Sequim receives a reasonable amount of rain/snowfall, with an annual precipitation of 546 mm (21 in). Sequim can be quite wet during November, receiving approximately 94 mm (3.7 in) of precipitation over 18 rainy days.
In contrast, during the driest month (August), you will experience much drier conditions, with 12 mm (0.5 in) of precipitation spread across 6 rainy days. For more details, please visit our Sequim Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Sequim
Sequim can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 11.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Sequim by Month
The relative humidity is high throughout the year in Sequim.
The city experiences its highest humidity in January, reaching 78%. In July, the humidity drops to its lowest level at 55%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Sequim
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July and August
- Seasonal pattern: A distinct dry season from April to September, with warm summers and cold winters
- Coldest conditions: December, with freezing nights around 0°C (32°F).
Frequently asked questions about the climate in Sequim
What is the best time to visit Sequim?
June, July, August and September typically offer the most optimal weather in Sequim. In contrast, January, February, March, November and December tend to have less optimal conditions. Sequim has a distinct dry season from April to September, with warm summers and cold winters.
What temperatures can I expect in Sequim?
Daytime highs range from 7°C (45°F) in December to 23°C (73°F) in August. Nighttime lows range from 0°C (32°F) to 11°C (52°F). Temperatures vary considerably through the year.
How much rain does Sequim get?
Annual rainfall is around 546 mm (21 in). November is the wettest month with 94 mm (3.7 in), while August is the driest with 12 mm (0.5 in).
How sunny is Sequim?
Sequim receives around 2,220 hours of sunshine per year. July is the sunniest month with 330 hours, while December is the cloudiest with just 70 hours. Overall, Sequim enjoys abundant sunshine.
Sequim 3-Day Forecast
Sequim (WA) 3-Day Forecast
Sequim on the map
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