December is a very cold and very rainy time for sunbathing in Clatsop County, and not recommended. December 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 December.
The average maximum temperature in Clatsop County in December is 9°. The average maximum temperature is 12° in the previous month and 10° in the next month.
The average temperature in Clatsop County in December is 6°. The average temperature ranges is 8° in the previous month and 6° in the next month.
The average minimum temperature in Clatsop County in December is 3°. The minimum temperature is 5° in the previous month and 3° in the next month.
The average day light hours per day in Clatsop County in December are 8.7 and there are 2.3 hours of sunshine per day on average during December making it not a particularly sunny month.
The ultraviolet index in Clatsop County in December is typically 1.1 during December. An ultraviolet index reading of 0 to 2 indicates low danger from the sun's UV rays for the average person. Most people will be able to spend several hours in the sun with out a problem, however unprotected skin risks burning in less than 1 hour. Wear sunglasses on bright days. Only those that burn easily will need to apply sunscreen. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in Clatsop County in December is 6° which is extremely cold and not suitable for swimming. Taking a dip at this temperature would risk hypothermia.
The average total rainfall in Clatsop County in December is 26.1cm and on average there are 22.2 rainy days in December making it a very wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Clatsop County in December is 5° which is a bit dry for some. The dew point is 8° in the previous month and 6° in the next month.
The average maximum relative humidity in Clatsop County in December is typically 94.3%. The maximum relative humidity is 95.9% in the previous month and 95.1% in the next month.
The average relative humidity in Clatsop County in December is typically 82.5%. The average relative humidity is 83% in the previous month and 83.1% in the next month.
The average maximum wind speed in Clatsop County in December is typically 31kmh. The average maximum wind speed is 31kmh in the previous month and 30kmh in the next month.
The average wind speed in Clatsop County in December is typically 12kmh. The average wind speed is 12kmh in the previous month and 12kmh in the next month.
The average wind direction in Clatsop County in December is from the East-Southeast.
