If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Kalianda: The hottest months are usually October and September with an average temp of 79°F, while the coldest months are August and September with an average of 79°F. The rainiest months in Kalianda are March, February, January, and December, with each month seeing an average of 15 inches of rainfall.