The hottest month in Spain is August when the average maximum temperature is 29°, average temperature is 25° and average minimum temperature is 21°.
The coolest month in Spain is January when the average maximum temperature is 16°, average temperature is 12° and average minimum temperature is 8°.
The longest days in Spain are in June, with an average of 14.8 hours of daylight per day. December has the shortest days with an average of 9.5 hours of daylight per day.
The sunniest days in Spain are in July which has the most hours of sunshine per day with an average of 10.8 hours of sunshine per day, making it a very sunny and pleasant month with long bright days. December has the least sunshine with an average of 4.9 hours of sunshine per day, making it a sunny month that is overcast at times.
The ultraviolet index is the highest in July when it reaches 10.3 and lowest in December when it reaches 2.2.
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 Spain are found in August when they peak at 25° and lowest in March 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 Spain is November with 7.7cm of rain and the most days of rain with 9.6 days with some rain, a dry time to visit the beach.
The driest month in Spain is July with 0.3cm of rain and the least days of rain with 2.5 days with some rain, a very dry time to visit the beach.
The most humid month in Spain is August with a dew point (an indicator of humidity) of 20° which is somewhat uncomfortable for most people in cities but fine on a beach.
The least humid month in Spain is February with a dew point of 9° which is a bit dry for some.
The most windy month in Spain is March when the average maximum windspeed is 28kmh and the average wind speed is 14kmh.
The least windy month in Spain is October when the average maximum windspeed is 23kmh and the average wind speed is 11kmh.