Cape Thomas Weather Forecast
- 12
- 19
Partly cloudy
- 11
- 20
Possible morning shower
- 10
- 22
Sunny
- 11
- 26
Mostly sunny
- 13
- 19
Partly cloudy
- 12
- 19
Possible shower
- 12
- 17
Cloudy
Today 9 Dec Lower South East
Partly cloudy. Winds southerly 15 to 25 km/h turning southeasterly 15 to 20 km/h in the late evening.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- Southerly 10 to 15 knots turning southeasterly in the evening. Winds reaching up to 20 knots north of Beachport in the late evening.
- Seas
- Around 1 metre.
- 1st Swell
- Southwesterly 3 metres, increasing to 3 to 4 metres south of Port MacDonnell.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure system over the Bight extends a ridge of high pressure over most of the state and will persist over southern SA during Wednesday and Thursday. Meanwhile, a trough of low pressure over the far northwest is expected to move along the northern border on Wednesday. The trough will extend further south on Thursday then move eastwards across the west and south of SA on Friday. Another ridge of high pressure will move over the south over the weekend and the trough will move slowly northeastwards.
Cape Thomas Temperature Statistics View More
December Temperature
Robe (10km)
Lowest 2 December, 2025
9 °CAverage December
17.2 °CHighest 3 December, 2025
23 °C
Climate (2020–Present)
Robe (10km)
Average Low 2020–2025
11.2 °CAverage 2020–2025
15.9 °CAverage High 2020–2025
18.4 °C