Other facts from our historical weather data: Which months have the greatest rainfall in Khanom? Most rainfall (rainy season) is seen in September, October, November and December. Which is the hottest month in Khanom? May has an average maximum temperature of 32°C (90°F) and is the hottest month of the year. Which is the coolest month in Khanom? The coolest month is January with an average maximum temperature of 29°C (84°F). Which is the wettest month in Khanom? November tops the wettest month list with 301mm (11.9 in) of rainfall. Which is the driest month in Khanom? February is the driest month with 46mm (1.8 in) of precipitation. Which is the sunniest month in Khanom? March is the sunniest month with an average of 240 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.