Cape Thomas Weather Forecast
- 11
- 15
Possible shower
- 9
- 15
Partly cloudy
- 9
- 16
Shower or two
- 9
- 15
Shower or two
- 8
- 15
Partly cloudy
- 7
- 17
Shower or two developing
- 9
- 16
Showers
Today 22 Aug Lower South East
Cloudy. Medium chance of showers, becoming less likely this afternoon. Winds westerly 15 to 25 km/h tending southwesterly in the morning then becoming light in the late afternoon. Daytime maximum temperatures around 16.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- West to southwesterly 15 to 20 knots, reaching up to 30 knots south of Beachport early in the morning. Winds becoming west to northwesterly below 10 knots in the late evening.
- Seas
- 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre during the afternoon.
- 1st Swell
- Southwesterly 4 metres.
- Weather
- Cloudy.
- Weather Situation
- A high pressure system over the Bight slowly drifts over SA today, to be centred over the eastern states by Sunday. A weak front embedded in the southwesterly flow around the high, clips the southeast early Saturday morning. A low pressure system and associated trough move into the far west later Sunday and then moves across the state on Monday an d out over the eastern states by later Tuesday. Another ridge of high pressure moves into the west later Tuesday.
Cape Thomas Temperature Statistics View More
August Temperature
Robe (10km)
Lowest 1 August, 2026
4.7 °CAverage August
12.9 °CHighest 17 August, 2026
18 °C
Climate (2021–2026)
Robe (10km)
Average Low 2021–2026
11.3 °CAverage 2021–2026
16 °CAverage High 2021–2026
18.5 °C