Weather is probably a major factor when you plan your trip to Tweed Heads, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually January and February, with an average temperature of 24°C, while the coldest months are July and August, with an average of 17°C. The rainiest months in Tweed Heads are January, February, March and December, with each month seeing an average of 177 mm of rainfall.