Other facts from our historical weather data: When is the rainy season in Phrae? Rainy season in Phrae occurs in the months of May, June, July, August and September. Does Phrae have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Phrae? April has an average maximum temperature of 37°C (99°F) and is the hottest month of the year. Which is the coolest month in Phrae? The coolest month is January with an average maximum temperature of 31°C (88°F). Which is the wettest month in Phrae? August tops the wettest month list with 349mm (13.7 in) of rainfall. Which is the driest month in Phrae? February is the driest month with 11mm (0.4 in) of precipitation. Which is the sunniest month in Phrae? March is the sunniest month with an average of 315 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.