Mullumbimby is one of the rainiest and most humid places in Australia. It experiences exceptionally high rainfall and humidity levels along with far below average wind speed. Overnight temperatures are above average and daytime temperatures, numbers of cloudy days and numbers of clear days are below average.
Summer in Mullumbimby is between December and February and maximum daily temperatues average between 25.7 and 26.5°C with overnight minimums averaging between 16.5 and 17.5°C. Summer days are balmy, averaging around 26.5 °C in the hottest months. Sunscreen and hat recommended.
Winter is between June and August and maximum daily temperatues average between 17.3 and 18.7°C with overnight minimums averaging between 7.2 and 8.5°C. Winter days in Mullumbimby are moderately cool but can be moderately cold if windy, dropping to around 17.3 °C. Pack your jumper and long pants.