Other facts from our historical weather data: Which is the warmest month in Bolton le Sands? July has an average maximum temperature of 19°C (66°F) and is the warmest month of the year. Which is the coldest month in Bolton le Sands? The coldest month is February with an average maximum temperature of 8°C (46°F). Which is the wettest month in Bolton le Sands? December tops the wettest month list with 150mm (5.9 in) of rainfall. Which is the driest month in Bolton le Sands? April is the driest month with 84mm (3.3 in) of precipitation. Which is the sunniest month in Bolton le Sands? May is the sunniest month with an average of 217 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.