Although weather is just one factor, it can really affect your travel plans, especially if you're planning an extended stay in Phumĭ Ph'âng. The hottest months are usually April and March, with an average temperature of 29°C, while the coldest months are January and December, with an average of 25°C. The rainiest months in Phumĭ Ph'âng are September, July, August and October, with each month seeing an average of 257 mm of rainfall.