Other facts from our historical weather data: When is the rainy season in Pak Chom? Rainy season in Pak Chom occurs in the months of May, June, July, August and September. Does Pak Chom have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Pak Chom? April has an average maximum temperature of 36°C (97°F) and is the hottest month of the year. Which is the coolest month in Pak Chom? The coolest month is January with an average maximum temperature of 29°C (84°F). Which is the wettest month in Pak Chom? August tops the wettest month list with 336mm (13.2 in) of rainfall. Which is the driest month in Pak Chom? December is the driest month with 13mm (0.5 in) of precipitation. Which is the sunniest month in Pak Chom? March is the sunniest month with an average of 274 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.