Taking into account the local weather in Tanjung Balai Karimun can help you maximize your time at the pool during your trip. The hottest months are usually May and April with an average temp of 83°F, while the coldest months are January and February with an average of 81°F. The rainiest months in Tanjung Balai Karimun are November, December, May, and April, with each month seeing an average of 13 inches of rainfall.