Other facts from our historical weather data: Which months have the greatest rainfall in Seascale? Most rainfall (rainy season) is seen in January, October, November and December. Which is the warmest month in Seascale? 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 Seascale? The coldest month is February with an average maximum temperature of 8°C (46°F). Which is the wettest month in Seascale? November tops the wettest month list with 172mm (6.8 in) of rainfall. Which is the driest month in Seascale? April is the driest month with 88mm (3.5 in) of precipitation. Which is the sunniest month in Seascale? 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.