The hottest month in Asturias is August when the average maximum temperature is 23°, average temperature is 19° and average minimum temperature is 16°.
The coolest month in Asturias is February when the average maximum temperature is 13°, average temperature is 9° and average minimum temperature is 5°.
The longest days in Asturias are in June, with an average of 15.4 hours of daylight per day. December has the shortest days with an average of 9 hours of daylight per day.
The sunniest days in Asturias are in July which has the most hours of sunshine per day with an average of 9.1 hours of sunshine per day, making it a sunny month with few clouds. December has the least sunshine with an average of 2.7 hours of sunshine per day, making it not a particularly sunny month.
The ultraviolet index is the highest in July when it reaches 9.3 and lowest in December when it reaches 1.5.
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.
The warmest sea water temperatures in Asturias are found in August when they peak at 26° and lowest in February when they dip to 15°.
The sea is best for swimming between June and December when the temperature is above 19° which is comfortable for swimming though some may prefer warmer water.
The wettest month in Asturias is December with 5.8cm of rain and November has the most days of rain with 18 days with some rain, a wet time to visit the beach.
The driest month in Asturias is August with 0.4cm of rain and July has the fewest days of rain with 9.1 days with some rain, a dry time to visit the beach.
The most humid month in Asturias is August with a dew point (an indicator of humidity) of 17° which is OK for most but slightly uncomfortable for some.
The least humid month in Asturias is February with a dew point of 7° which is a bit dry for some.
The most windy month in Asturias is March when the average maximum windspeed is 26kmh and the average wind speed is 12kmh.
The least windy month in Asturias is September when the average maximum windspeed is 20kmh and the average wind speed is 8kmh.