Other facts from our historical weather data: Which months have the greatest rainfall in Killichonan? Most rainfall (rainy season) is seen in January, February and December. Which is the warmest month in Killichonan? July has an average maximum temperature of 17°C (63°F) and is the warmest month of the year. Which is the coldest month in Killichonan? The coldest month is February with an average maximum temperature of 5°C (41°F). Which is the wettest month in Killichonan? January tops the wettest month list with 184mm (7.2 in) of rainfall. Which is the driest month in Killichonan? April is the driest month with 105mm (4.1 in) of precipitation. Which is the sunniest month in Killichonan? May is the sunniest month with an average of 189 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.