If you're looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Pontianak: The hottest months are usually May and August, with an average temperature of 27°C, while the coldest months are February and January, with an average of 26°C. The rainiest months in Pontianak are November, December, October and April, with each month seeing an average of 400 mm of rainfall.