Other facts from our historical weather data: Which months have the greatest rainfall in St Bees? Most rainfall (rainy season) is seen in January, October, November and December. Which is the warmest month in St Bees? August has an average maximum temperature of 18°C (64°F) and is the warmest month of the year. Which is the coldest month in St Bees? The coldest month is February with an average maximum temperature of 8°C (46°F). Which is the wettest month in St Bees? November tops the wettest month list with 180mm (7.1 in) of rainfall. Which is the driest month in St Bees? April is the driest month with 90mm (3.5 in) of precipitation. 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.