Other facts from our historical weather data: Which is the warmest month in Alcalá? August has an average maximum temperature of 25°C (77°F) and is the warmest month of the year. Which is the coldest month in Alcalá? The coldest month is September with an average maximum temperature of 25°C (77°F). Which is the wettest month in Alcalá? June tops the wettest month list with 1090mm (42.9 in) of rainfall. Which is the driest month in Alcalá? January is the driest month with 639mm (25.2 in) of precipitation. Which is the sunniest month in Alcalá? August is the sunniest month with an average of 196 hours of sunshine. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.