Tumby Island Weather Forecast
- 14
- 35
Sunny
- 17
- 35
Partly cloudy
- 15
- 21
Windy
- 13
- 21
Windy
- 13
- 23
Partly cloudy
- 14
- 26
Partly cloudy
- 14
- 26
Partly cloudy
Today 28 Dec Lower Eyre Peninsula
Sunny. Winds northeasterly 15 to 20 km/h tending northwest to northeasterly 15 to 25 km/h in the morning then tending east to southeasterly 20 to 30 km/h in the middle of the day. Daytime maximum temperatures 34 to 39.
Spencer Gulf Coastal Waters
- Wind
- East to northeasterly 10 to 15 knots turning southeasterly in the late afternoon. Winds reaching up to 20 knots north of Cowell to Wallaroo in the evening.
- Seas
- Around 1 metre.
- 1st Swell
- South to southwesterly around 1 metre south of Cowell to Wallaroo.
- Weather
- Sunny.
- Weather Situation
- A high pressure system centred near Tasmania maintains a broad ridge over most of South Australia, with a trough crossing the Bight. The high centre moves eastward into the Tasman Sea today and Monday while the trough builds over central SA and slowly moves eastward. The trough moves into the northeast of SA on Wednesday while a high passes south of the Bight.
Tumby Island Temperature Statistics View More
December Temperature
Port Lincoln Airport (31km)
Lowest 7 December, 2025
8.1 °CAverage December
18.6 °CHighest 18 December, 2025
42.7 °C
Climate (2020–Present)
Port Lincoln Airport (31km)
Average Low 2020–2025
11.4 °CAverage 2020–2025
15.8 °CAverage High 2020–2025
21.3 °C