Other facts from our historical weather data: When is the rainy season in Matt? Rainy season in Matt occurs in the months of April, May, June, July, August and September. When is winter in Matt? The coldest season / winter is in the following months: January, February and December. Which is the warmest month in Matt? July has an average maximum temperature of 19°C (66°F) and is the warmest month of the year. Which is the coldest month in Matt? The coldest month is January with an average maximum temperature of -1°C (30°F). Which is the wettest month in Matt? June tops the wettest month list with 269mm (10.6 in) of rainfall. Which is the driest month in Matt? January is the driest month with 131mm (5.2 in) of precipitation. Which is the sunniest month in Matt? August is the sunniest month with an average of 170 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.