Tumby Bay Weather Forecast
- 8
- 18
Shower
- 9
- 16
Cloudy
- 8
- 18
Cloudy
- 8
- 19
Cloudy
- 9
- 17
Shower
- 9
- 17
Shower
- 6
- 18
Partly cloudy
Today 20 Aug Lower Eyre Peninsula
Partly cloudy. Medium chance of showers, becoming less likely in the late afternoon and evening. Winds northwesterly 15 to 25 km/h turning west to southwesterly 20 to 30 km/h in the late morning and early afternoon. Daytime maximum temperatures around 18.
Spencer Gulf Coastal Waters
- Wind
- Northwesterly 10 to 15 knots turning southwesterly in the early afternoon.
- Seas
- Below 1 metre, increasing to around 1 metre south of Cowell to Wallaroo.
- 1st Swell
- South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Port Neill to Port Victoria by early evening.
- Weather
- Partly cloudy.
- Weather Situation
- A cold front clears to the east Wednesday evening. Weak troughs clip the southeast in a broad westerly flow on Thursday and Friday, as a ridge of high pressure is expected to approach South Australia from the west. The high centre is expected to linger over the state on the weekend.
Tumby Bay Temperature Statistics View More
August Temperature
Port Lincoln Airport (32km)
Lowest 1 August, 2026
2.6 °CAverage August
12.2 °CHighest 18 August, 2026
20.3 °C
Climate (2021–2026)
Port Lincoln Airport (32km)
Average Low 2021–2026
11.5 °CAverage 2021–2026
15.8 °CAverage High 2021–2026
21.3 °C