Planning for the weather is a good way to make your trip to Kerema relaxing and enjoyable, especially when you're splurging. The hottest months are usually December and February with an average temp of 68°F, while the coldest months are September and July with an average of 66°F. The rainiest months in Kerema are September, June, August, and July, with each month seeing an average of 27 inches of rainfall.