Other facts from our historical weather data: Which is the warmest month in Bilma? June has an average maximum temperature of 43°C (109°F) and is the warmest month of the year. Which is the coldest month in Bilma? The coldest month is January with an average maximum temperature of 25°C (77°F). Which is the wettest month in Bilma? August tops the wettest month list with 5mm (0.2 in) of rainfall. Which is the driest month in Bilma? November is the driest month with 0mm (0 in) of precipitation. Which is the sunniest month in Bilma? July is the sunniest month with an average of 335 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.