Cape Thomas Weather Forecast
- 14
- 20
Showers. Becoming windy
- 13
- 18
Cloudy
- 12
- 19
Partly cloudy
- 10
- 21
Mostly sunny
- 12
- 21
Possible shower
- 13
- 21
Partly cloudy
- 12
- 21
Mostly sunny
Today 11 Mar Lower South East
Partly cloudy. Very high chance of showers, becoming less likely this afternoon. The chance of a thunderstorm this evening, possibly severe with damaging winds. Winds northwesterly 15 to 20 km/h turning southwesterly 25 to 40 km/h during the morning then decreasing to 20 to 30 km/h in the evening. Daytime maximum temperatures in the low 20s.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- West to northwesterly 10 to 15 knots turning southwesterly 15 to 25 knots early in the morning. Winds reaching up to 30 knots in the late morning and afternoon.
- Seas
- Below 1 metre, increasing to 2 to 3 metres during the morning.
- 1st Swell
- Southwesterly 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
- Weather
- Partly cloudy. 95% chance of showers. The chance of a thunderstorm this evening.
- Weather Situation
- A high pressure system centred in the Tasman Sea extends a ridge over SA. The ridge moves eastwards ahead of a cold front and trough moving across the west and south of SA today. The trough will clear the northeast during Thursday whilst a high pressure ridge moves across waters well to the south. A low pressure trough is expected to develop over the far west of SA on Friday then move slowly eastwards over the weekend.
Cape Thomas Temperature Statistics View More
March Temperature
Robe (10km)
Lowest 4 March, 2026
10.6 °CAverage March
18 °CHighest 1 March, 2026
22 °C
Climate (2021–Present)
Robe (10km)
Average Low 2021–2026
11.3 °CAverage 2021–2026
15.9 °CAverage High 2021–2026
18.5 °C