Rivermouth Campground Weather Forecast
- 12
- 23
Shower or two
- 12
- 20
Shower or two
- 7
- 22
Shower or two
- 11
- 19
Shower or two
- 10
- 21
Possible shower
- 10
- 22
Sunny
- 10
- 26
Mostly sunny
Today 7 Sep Mid North Coast
Mostly sunny. The chance of fog about higher ground in the early morning. Medium chance of showers in the south, slight chance elsewhere. Light winds becoming east to southeasterly 15 to 20 km/h in the early afternoon then becoming light in the late afternoon. Overnight temperatures falling to between 6 and 12 with daytime temperatures reaching the low to mid 20s.
Rivermouth Campground Temperature Statistics View More
September Temperature
Williamtown RAAF Base (49km)
Lowest 1 September, 2026
5.4 °CAverage September
18.9 °CHighest 5 September, 2026
32.8 °C
Climate (2021–2026)
Williamtown RAAF Base (49km)
Average Low 2021–2026
13.5 °CAverage 2021–2026
18.2 °CAverage High 2021–2026
24 °C