Mullumbimby Weather Forecast
- 19
- 30
Becoming windy. Sunny
- 21
- 31
Late showers. Possible storm
- 20
- 27
Possible early storm. Showers
- 20
- 29
Partly cloudy
- 20
- 29
Mostly sunny
- 20
- 28
Partly cloudy
- 20
- 26
Shower or two
Today 6 Dec Northern Rivers
Sunny morning. The chance of smoke haze in the south. The chance of a thunderstorm inland in the afternoon. Thunderstorms possibly severe with damaging winds in the south in the afternoon. Light winds becoming northerly 20 to 30 km/h in the morning. Overnight temperatures falling to around 18 with daytime temperatures reaching 30 to 36.
Mullumbimby Temperature Statistics View More
December Temperature
Cape Byron (16km)
Lowest 3 December, 2025
16.6 °CAverage December
22.3 °CHighest 1 December, 2025
29.3 °C
Climate (2020–Present)
Cape Byron (16km)
Average Low 2020–2025
17.3 °CAverage 2020–2025
20.2 °CAverage High 2020–2025
23.7 °C