Cape Northumberland Weather Forecast
- 14
- 17
Rain
- 9
- 15
Shower
- 10
- 14
Shower
- 8
- 14
Shower
- 6
- 15
Shower
- 9
- 14
Shower
- 8
- 14
Shower
Today 18 Jun Lower South East
Partly cloudy. Very high chance of showers, most likely in the early morning. Winds north to northwesterly 25 to 35 km/h. Overnight temperatures falling to around 13 with daytime temperatures reaching around 17.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- Northerly 20 to 30 knots tending northwesterly 20 to 25 knots in the early morning then increasing to 20 to 30 knots in the middle of the day. Winds reaching up to 35 knots south of Beachport in the late evening.
- Seas
- 2 to 3 metres.
- 1st Swell
- Southwesterly 1.5 metres.
- Weather
- Partly cloudy. Near 100% chance of showers. The chance of a thunderstorm in the afternoon and evening.
Cape Northumberland Temperature Statistics View More
June Temperature
Mount Gambier Airport (36km)
Lowest 15 June, 2026
2.4 °CAverage June
11.9 °CHighest 12 June, 2026
20.1 °C
Climate (2021–2026)
Mount Gambier Airport (36km)
Average Low 2021–2026
8.9 °CAverage 2021–2026
13.7 °CAverage High 2021–2026
20 °C