Other facts from our historical weather data: When is the rainy season in Warth? Rainy season in Warth occurs in the months of May, June, July, August and September. When is winter in Warth? The coldest season / winter is in the following months: January, February and December. Which is the warmest month in Warth? 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 Warth? The coldest month is January with an average maximum temperature of -1°C (30°F). Which is the wettest month in Warth? June tops the wettest month list with 241mm (9.5 in) of rainfall. Which is the driest month in Warth? October is the driest month with 122mm (4.8 in) of precipitation. 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.