Other facts from our historical weather data: Which is the warmest month in Lytham St Annes? August has an average maximum temperature of 19°C (66°F) and is the warmest month of the year. Which is the coldest month in Lytham St Annes? The coldest month is February with an average maximum temperature of 9°C (48°F). Which is the wettest month in Lytham St Annes? December tops the wettest month list with 144mm (5.7 in) of rainfall. Which is the driest month in Lytham St Annes? April is the driest month with 79mm (3.1 in) of precipitation. Which is the sunniest month in Lytham St Annes? 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.