Weather in Clatsop County, United States in September

So you're interested in going to Clatsop County, United States in September

September is a slightly cold and slightly rainy time for sunbathing in Clatsop County. September is too cold for swimming in Clatsop County for any length of time, unless you have a wetsuit. Consider visiting Clatsop County in the months of June, July, August, September, for the best beach weather. Also consider one of our other suggestions for September.

Temperature in Clatsop County in September

The average maximum temperature in Clatsop County in September is 20°. The average maximum temperature is 20° in the previous month and 16° in the next month.

The average temperature in Clatsop County in September is 15°. The average temperature ranges is 17° in the previous month and 12° in the next month.

The average minimum temperature in Clatsop County in September is 10°. The minimum temperature is 13° in the previous month and in the next month.

Sunshine in Clatsop County in September

The average day light hours per day in Clatsop County in September are 12.6 and there are 6.8 hours of sunshine per day on average during September making it a quite sunny month with some cloud cover.

The ultraviolet index in Clatsop County in September is typically 5.5 during September. An ultraviolet index reading of 3 to 5 indicates there is a moderate risk of harm from unprotected sun exposure. Keep out of the sun during the strongest hours around midday when unprotected skin risks burning in less than 30 minutes. For the sensitive 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, and after swimming or sweating. Tanning for hours is possible with the right application of sun cream. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Clatsop County in September

The average sea water temperature in Clatsop County in September is 12° which is very cold and bracing, it's not recommended you swim with out a full wet suit.

Rainfall in Clatsop County in September

The average total rainfall in Clatsop County in September is 9cm and on average there are 12.5 rainy days in September making it a slightly wet time to visit the beach.

Humidity in Clatsop County in September

The maximum dew point (an indicator of humidity) in Clatsop County in September is 13° which is comfortable for everyone. The dew point is 14° in the previous month and 11° in the next month.

The average maximum relative humidity in Clatsop County in September is typically 95.6%. The maximum relative humidity is 95.3% in the previous month and 96.5% in the next month.

The average relative humidity in Clatsop County in September is typically 79.9%. The average relative humidity is 81.2% in the previous month and 81.6% in the next month.

Wind Speed in Clatsop County in September

The average maximum wind speed in Clatsop County in September is typically 26kmh. The average maximum wind speed is 26kmh in the previous month and 27kmh in the next month.

The average wind speed in Clatsop County in September is typically 10kmh. The average wind speed is 11kmh in the previous month and 10kmh in the next month.

The average wind direction in Clatsop County in September is from the South West.

Monthly Averages

Suggested Beaches in September

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