Other facts from our historical weather data: Which is the warmest month in Hemsby? August has an average maximum temperature of 20°C (68°F) and is the warmest month of the year. Which is the coldest month in Hemsby? The coldest month is February with an average maximum temperature of 8°C (46°F). Which is the wettest month in Hemsby? October tops the wettest month list with 83mm (3.3 in) of rainfall. Which is the driest month in Hemsby? April is the driest month with 45mm (1.8 in) of precipitation. Which is the sunniest month in Hemsby? May is the sunniest month with an average of 204 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.