Other facts from our historical weather data: Which months have the greatest rainfall in Whitehaven? Most rainfall (rainy season) is seen in January, October, November and December. Which is the warmest month in Whitehaven? 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 Whitehaven? The coldest month is February with an average maximum temperature of 8°C (46°F). Which is the wettest month in Whitehaven? November tops the wettest month list with 175mm (6.9 in) of rainfall. Which is the driest month in Whitehaven? April is the driest month with 89mm (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.