Cape Thomas Weather Forecast
- 11
- 16
Showers. Windy
- 9
- 15
Shower or two. Wind easing
- 10
- 15
Showers
- 9
- 14
Shower or two
- 9
- 15
Cloudy
- 10
- 15
Shower or two
- 11
- 16
Shower or two
Today 19 Sep Lower South East
Partly cloudy. The chance of fog early this morning. Very high chance of showers, most likely from late this morning. Possible small hail in the south this evening. The chance of a thunderstorm in the south during this afternoon and evening, possibly severe with damaging winds late this afternoon and evening. Winds west to northwesterly 30 to 45 km/h tending west to southwesterly 25 to 35 km/h during the afternoon and evening. Daytime maximum temperatures around 18.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- Northwesterly 20 to 30 knots, reaching up to 35 knots offshore in the early afternoon. Winds turning west to southwesterly 25 to 30 knots in the afternoon.
- Seas
- Around 1 metre, increasing to 1.5 to 2 metres during the morning, then increasing to 2.5 to 3 metres around midday.
- 1st Swell
- Westerly 2.5 metres, tending southwesterly 2.5 to 3 metres around midday, then tending westerly 3 to 5 metres during the afternoon.
- Weather
- Partly cloudy. 90% chance of showers, with possible small hail south of Beachport this evening. The chance of a thunderstorm south of Beachport in the late morning and afternoon.
- Weather Situation
- A high pressure system lies to the west of the country with a ridge extending into the west of the state. A cold front will pass over the south during Friday afternoon with a southwesterly flow persisting through the weekend as a ridge of high pressure extends over northern parts of the state.
Cape Thomas Temperature Statistics View More
September Temperature
Robe (10km)
Lowest 15 September, 2025
3.8 °CAverage September
14.3 °CHighest 6 September, 2025
20.4 °C
Climate (2020–Present)
Robe (10km)
Average Low 2020–2025
11.2 °CAverage 2020–2025
15.9 °CAverage High 2020–2025
18.5 °C