If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Sipalay: The hottest months are usually April and May with an average temp of 82°F, while the coldest months are February and January with an average of 81°F. The rainiest months in Sipalay are July, September, June, and August, with each month seeing an average of 18 inches of rainfall.