Other facts from our historical weather data: Which is the warmest month in Alajeró? September has an average maximum temperature of 25°C (77°F) and is the warmest month of the year. Which is the coldest month in Alajeró? The coldest month is February with an average maximum temperature of 20°C (68°F). Which is the wettest month in Alajeró? December tops the wettest month list with 35mm (1.4 in) of rainfall. Which is the driest month in Alajeró? July is the driest month with 0mm (0 in) of precipitation. Which is the sunniest month in Alajeró? May is the sunniest month with an average of 253 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.