If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Rote Island: The hottest months are usually November and December, with an average temperature of 29°C, while the coldest months are August and July, with an average of 27°C. The rainiest months in Rote Island are January, February, December and March, with each month seeing an average of 231 mm of rainfall.