If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Keningau: The hottest months are usually May and August, with an average temperature of 25°C, while the coldest months are February and January, with an average of 23°C. The rainiest months in Keningau are May, November, April and January, with each month seeing an average of 410 mm of rainfall.