Other facts from our historical weather data: When is the rainy season in Chau Doc? Rainy season in Chau Doc occurs in the months of May, June, July, August, September and October. Which is the hottest month in Chau Doc? 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 Chau Doc? The coolest month is January with an average maximum temperature of 32°C (90°F). Which is the wettest month in Chau Doc? October tops the wettest month list with 300mm (11.8 in) of rainfall. Which is the driest month in Chau Doc? February is the driest month with 17mm (0.7 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.