Port Arthur Weather Forecast
- 9
- 21
Shower
- 10
- 18
Cloudy
- 9
- 20
Shower
- 11
- 20
Shower
- 9
- 20
Cloudy
- 9
- 21
Cloudy
- 9
- 23
Partly cloudy
Today 6 May Yorke Peninsula
Partly cloudy. High chance of showers, most likely in the late morning and afternoon. Winds westerly 15 to 25 km/h turning south to southwesterly 25 to 35 km/h in the late morning and early afternoon. Daytime maximum temperatures around 20.
Gulf St Vincent Coastal Waters
- Wind
- Westerly 10 to 15 knots turning south to southwesterly 15 to 25 knots in the early afternoon. Winds reaching up to 30 knots in the evening.
- Seas
- Below 1 metre, increasing to 1.5 to 2.5 metres during the afternoon.
- 1st Swell
- West to southwesterly below 0.5 metres.
- Weather
- Partly cloudy. 80% chance of showers.
- Weather Situation
- A ridge of high pressure over SA will weaken briefly as a cold front crosses the southeast on Wednesday afternoon. The ridge will begin to re-establish in the wake of the front and stabilise over SA with the strong high pressure centre moving into the Bight over the weekend.
Port Arthur Temperature Statistics View More
May Temperature
Kadina Airport (41km)
Lowest 5 May, 2026
10.3 °CAverage May
16.9 °CHighest 1 May, 2026
29.2 °C
Climate (2021–Present)
Kadina Airport (41km)
Average Low 2021–2026
10.2 °CAverage 2021–2026
16.4 °CAverage High 2021–2026
23.5 °C