If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Pemba: The hottest months are usually December and November, with an average temperature of 28°C, while the coldest months are July and August, with an average of 25°C. The rainiest months in Pemba are January, February, March and December, with each month seeing an average of 306 mm of rainfall.