Other facts from our historical weather data: Which is the warmest month in Earl Sterndale? July has an average maximum temperature of 20°C (68°F) and is the warmest month of the year. Which is the coldest month in Earl Sterndale? The coldest month is February with an average maximum temperature of 7°C (45°F). Which is the wettest month in Earl Sterndale? June tops the wettest month list with 97mm (3.8 in) of rainfall. Which is the driest month in Earl Sterndale? March is the driest month with 74mm (2.9 in) of precipitation. Which is the sunniest month in Earl Sterndale? May is the sunniest month with an average of 186 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.