Other facts from our historical weather data: Which months have the greatest rainfall in Kampong Speu? Most rainfall (rainy season) is seen in September and October. Does Kampong Speu have a dry season? Yes, the months of January and February are very dry. Which is the hottest month in Kampong Speu? 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 Kampong Speu? The coolest month is January with an average maximum temperature of 32°C (90°F). Which is the wettest month in Kampong Speu? October tops the wettest month list with 237mm (9.3 in) of rainfall. Which is the driest month in Kampong Speu? February is the driest month with 13mm (0.5 in) of precipitation. Which is the sunniest month in Kampong Speu? March is the sunniest month with an average of 270 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.