Copalis Beach (WA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Copalis Beach.
Climate overview of Copalis Beach
The climate in Copalis Beach, Washington State, United States of America, is marked by large temperature swings across the seasons, ranging from 21°C (70°F) in August to 8°C (46°F) in December.
The city has a wet climate, receiving around 2287 mm (90 in) of rain/snowfall per year. Despite the high annual total, it has distinct dry (July to August) and wet (October to March) seasons, with pleasant summers and cold winters. November is the wettest month.
Copalis Beach Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Copalis Beach - and find the best time to visit.
Monthly Temperature in Copalis Beach
In Copalis Beach, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a pleasant 21°C (70°F) in August to a chilly 8°C (46°F) in December.
Nighttime temperatures range from 12°C (54°F) in August to 3°C (37°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Copalis Beach
Copalis Beach experiences significant rain/snowfall throughout the year, averaging 2287 mm (90 in) of precipitation annually. The seasons in Copalis Beach bring significant changes in precipitation. The wettest month, November, receives heavy rainfall, with an average of 379 mm (15 in) of precipitation. This rainfall is distributed across 24 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 32 mm (1.3 in) over 9 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Copalis Beach Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Copalis Beach
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July, August and September
- Warmest weather: July, August and September
- Fewest rainy days: July and August
- Wettest months: January, February, March, October, November and December, when rainfall is highest.
- Seasonal pattern: Distinct dry (July to August) and wet (October to March) seasons, with pleasant summers and cold winters
Frequently asked questions about the climate in Copalis Beach
What is the best time to visit Copalis Beach?
July, August and September typically offer the most optimal weather in Copalis Beach. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. Copalis Beach has distinct dry (July to August) and wet (October to March) seasons, with pleasant summers and cold winters.
What temperatures can I expect in Copalis Beach?
Daytime highs range from 8°C (46°F) in December to 21°C (70°F) in August. Nighttime lows range from 3°C (37°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does Copalis Beach get?
Annual rainfall is around 2287 mm (90 in). November is the wettest month with 379 mm (15 in), while July is the driest with 32 mm (1.3 in).
Copalis Beach 3-Day Forecast
Copalis Beach (WA) 3-Day Forecast
Copalis Beach on the map
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