Thompson Beach Weather Forecast
- 11
- 26
Windy
- 14
- 35
Sunny
- 23
- 45
Windy
- 17
- 34
Sunny
- 19
- 43
Sunny
- 27
- 39
Sunny
- 19
- 29
Windy
Today 22 Jan Mid North
Clear. Winds east to southeasterly 15 to 25 km/h.
Gulf St Vincent Coastal Waters
- Wind
- Southerly 15 to 20 knots turning southeasterly 15 to 25 knots in the evening.
- Seas
- 1 to 1.5 metres, increasing to 1.5 to 2 metres by early evening.
- 1st Swell
- South to southwesterly below 0.5 metres.
- Weather
- Clear.
- Weather Situation
- A low pressure trough lingers over the far northeast of SA until Friday. A high pressure system south of the Bight maintains a ridge over western and southern SA as it moves eastwards today, to be over the Tasman Sea on Friday. A trough of low pressure approaches from the west late on Friday and is forecast to move over southern SA during Saturday, then lingers through inland SA into Sunday. Another high pressure system is expected to move over waters to the south over the weekend, extending a ridge over southern SA on Sunday, before a second trough moves in from the west on Monday.
Thompson Beach Temperature Statistics View More
January Temperature
Roseworthy (35km)
Lowest 1 January, 2026
6.6 °CAverage January
23.1 °CHighest 8 January, 2026
47.1 °C
Climate (2021–Present)
Roseworthy (35km)
Average Low 2021–2026
9.7 °CAverage 2021–2026
16.2 °CAverage High 2021–2026
23.6 °C