Mullumbimby Weather Forecast
- 13
- 22
Showers
- 13
- 22
Partly cloudy
- 12
- 23
Mostly sunny
- 13
- 27
Sunny
- 15
- 21
Showers. Windy
- 12
- 20
Showers. Windy
- 12
- 22
Possible shower
Today 12 Sep Northern Rivers
Partly cloudy. High chance of showers, becoming less likely late this afternoon and evening. The chance of a thunderstorm inland during this afternoon and evening. Light winds becoming southeasterly 15 to 20 km/h in the middle of the day then becoming light in the evening. Daytime maximum temperatures in the low 20s.
Mullumbimby Temperature Statistics View More
September Temperature
Cape Byron (16km)
Lowest 11 September, 2026
12.5 °CAverage September
18.4 °CHighest 6 September, 2026
26.9 °C
Climate (2021–2026)
Cape Byron (16km)
Average Low 2021–2026
17.4 °CAverage 2021–2026
20.2 °CAverage High 2021–2026
23.8 °C