When you're planning your trip to Phumĭ Dei Krâhâm, make sure that you take the year-round temperatures into account. The hottest months are usually March and April, with an average temperature of 30°C, while the coldest months are January and December, with an average of 27°C. The rainiest months in Phumĭ Dei Krâhâm are September, October, May and August, with each month seeing an average of 242 mm of rainfall.