Other facts from our historical weather data: When is the rainy season in Attapu? Rainy season in Attapu occurs in the months of May, June, July, August and September. Does Attapu have a dry season? Yes, the months of January, February and December are very dry. Which is the hottest month in Attapu? 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 Attapu? The coolest month is January with an average maximum temperature of 30°C (86°F). Which is the wettest month in Attapu? July tops the wettest month list with 348mm (13.7 in) of rainfall. Which is the driest month in Attapu? January is the driest month with 4mm (0.2 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.