Other facts from our historical weather data: Which months have the greatest rainfall in Barrow in Furness? Most rainfall (rainy season) is seen in January, October, November and December. Which is the warmest month in Barrow in Furness? 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 Barrow in Furness? The coldest month is February with an average maximum temperature of 8°C (46°F). Which is the wettest month in Barrow in Furness? December tops the wettest month list with 178mm (7 in) of rainfall. Which is the driest month in Barrow in Furness? April is the driest month with 87mm (3.4 in) of precipitation. Which is the sunniest month in Barrow in Furness? 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.