Other facts from our historical weather data: Which months have the greatest rainfall in Invergarry? Most rainfall (rainy season) is seen in January, February, October and December. Which is the warmest month in Invergarry? 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 Invergarry? The coldest month is February with an average maximum temperature of 6°C (43°F). Which is the wettest month in Invergarry? January tops the wettest month list with 189mm (7.4 in) of rainfall. Which is the driest month in Invergarry? April is the driest month with 105mm (4.1 in) of precipitation. Which is the sunniest month in Invergarry? May is the sunniest month with an average of 178 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.