Cape Northumberland Weather Forecast
- 11
- 15
Shower
- 7
- 15
Storm
- 11
- 16
Shower
- 11
- 15
Shower
- 9
- 14
Shower
- 10
- 17
Shower
- 11
- 17
Shower
Today 31 May Lower South East
Cloudy. High chance of showers in the south, medium chance elsewhere. Winds west to southwesterly 20 to 30 km/h becoming light in the late afternoon. Overnight temperatures falling to between 7 and 11 with daytime temperatures reaching around 15.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- Southwesterly 15 to 25 knots, reaching up to 30 knots south of Beachport during the morning. Winds turning west to northwesterly below 10 knots in the evening.
- Seas
- 1.5 to 2.5 metres, decreasing to 1 metre by early evening.
- 1st Swell
- Westerly 3 metres, tending southwesterly 3 to 4 metres during the morning.
- Weather
- Cloudy. 70% chance of showers.
Cape Northumberland Temperature Statistics View More
May Temperature
Mount Gambier Airport (36km)
Lowest 22 May, 2026
3.2 °CAverage May
13.3 °CHighest 1 May, 2026
28.5 °C
Climate (2021–Present)
Mount Gambier Airport (36km)
Average Low 2021–2026
8.9 °CAverage 2021–2026
13.7 °CAverage High 2021–2026
20 °C