Cape Thomas Weather Forecast
- 5
- 14
Cloudy
- 9
- 14
Cloudy
- 7
- 15
Mostly sunny
- 6
- 17
Mostly sunny
- 9
- 19
Partly cloudy
- 13
- 19
Shower or two
- 12
- 17
Shower or two
Today 8 Sep Lower South East
Cloudy. Slight chance of a shower in the south later this evening. Near zero chance of rain elsewhere. Winds west to southwesterly 15 to 20 km/h tending south to southwesterly 20 to 30 km/h in the evening.
Lower South East Coastal Waters
Cape Jaffa to SA-Vic Border- Wind
- West to southwesterly 15 to 20 knots tending south to southwesterly 20 to 25 knots in the evening. Winds reaching up to 30 knots in the evening.
- Seas
- 1 to 1.5 metres, increasing to 1 to 2 metres by early evening.
- 1st Swell
- Southwesterly 3 metres, increasing to 3 to 4 metres south of Beachport.
- Weather
- Cloudy.
- Weather Situation
- A high pressure system centred south of WA extends a ridge across the south of SA. The main high centre will move eastwards during the week to be centred to the east of SA on Friday. A trough over the interior of WA will remain stationary for most of the week and may extend into the far west of SA at times. Another low pressure trough will approach from the west on Saturday.
Cape Thomas Temperature Statistics View More
September Temperature
Robe (10km)
Lowest 1 September, 2026
7.4 °CAverage September
14.1 °CHighest 1 September, 2026
16.6 °C
Climate (2021–2026)
Robe (10km)
Average Low 2021–2026
11.3 °CAverage 2021–2026
16 °CAverage High 2021–2026
18.5 °C