If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Seri Tanjung Pinang: The hottest months are usually March and April with an average temp of 82°F, while the coldest months are January and December with an average of 80°F. The rainiest months in Seri Tanjung Pinang are November, October, December, and May, with each month seeing an average of 13 inches of rainfall.