If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Chaloklum: The hottest months are usually May and June with an average temp of 84°F, while the coldest months are January and February with an average of 81°F. The rainiest months in Chaloklum are November, October, September, and December, with each month seeing an average of 11 inches of rainfall.