If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Banjarangkan: The hottest months are usually March and October, with an average temperature of 26°C, while the coldest months are August and September, with an average of 24°C. The rainiest months in Banjarangkan are December, January, November and February, with each month seeing an average of 301 mm of rainfall.