Other facts from our historical weather data: Which is the warmest month in Port Charlotte? 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 Port Charlotte? The coldest month is February with an average maximum temperature of 9°C (48°F). Which is the wettest month in Port Charlotte? December tops the wettest month list with 143mm (5.6 in) of rainfall. Which is the driest month in Port Charlotte? May is the driest month with 78mm (3.1 in) of precipitation. Which is the sunniest month in Port Charlotte? May is the sunniest month with an average of 203 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.