Annual average weather for Clatsop County, United States

Annual Temperature for Clatsop County

The hottest month in Clatsop County is August when the average maximum temperature is 20°, average temperature is 17° and average minimum temperature is 13°.

The coolest month in Clatsop County is December when the average maximum temperature is , average temperature is and average minimum temperature is .

Annual Sunshine for Clatsop County

The longest days in Clatsop County are in June, with an average of 15.7 hours of daylight per day. December has the shortest days with an average of 8.7 hours of daylight per day.

The sunniest days in Clatsop County are in July which has the most hours of sunshine per day with an average of 9.5 hours of sunshine per day, making it a sunny month with few clouds. December has the least sunshine with an average of 2.3 hours of sunshine per day, making it not a particularly sunny month.

The ultraviolet index is the highest in June when it reaches 8.8 and lowest in December when it reaches 1.1.

An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Annual Sea Temperature for Clatsop County

The warmest sea water temperatures in Clatsop County are found in August when they peak at 14° and lowest in February when they dip to .

The sea is best for swimming between June and December when the temperature is above which is very cold and bracing, it's not recommended you swim with out a full wet suit.

Annual Rainfall for Clatsop County

The wettest month in Clatsop County is November with 30.5cm of rain and March has the most days of rain with 25.3 days with some rain, a very wet time to visit the beach.

The driest month in Clatsop County is July with 2.8cm of rain and the least days of rain with 9.2 days with some rain, a dry time to visit the beach.

Annual Humidity for Clatsop County

The most humid month in Clatsop County is August with a dew point (an indicator of humidity) of 14° which is comfortable for everyone.

The least humid month in Clatsop County is February with a dew point of which is a bit dry for some.

Annual Wind Speed for Clatsop County

The most windy month in Clatsop County is March when the average maximum windspeed is 32kmh and the average wind speed is 13kmh.

The least windy month in Clatsop County is September when the average maximum windspeed is 26kmh and the average wind speed is 10kmh.

Monthly Averages

Suggested Beaches

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