If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Dundee Beach: The hottest months are usually November and October, with an average temperature of 29°C, while the coldest months are July and August, with an average of 26°C. The rainiest months in Dundee Beach are January, February, December and March, with each month seeing an average of 440 mm of rainfall.