Granite Island Weather Forecast
- 14
- 25
Partly cloudy
- 13
- 19
Partly cloudy
- 10
- 28
Sunny
- 16
- 23
Partly cloudy
- 11
- 26
Mostly sunny
- 15
- 27
Mostly sunny
- 17
- 26
Possible shower
Today 19 Apr Mount Lofty Ranges
Partly cloudy. Winds west to southwesterly 15 to 25 km/h turning south to southeasterly 15 to 20 km/h in the evening.
South Central Coastal Waters
- Wind
- Southerly 10 to 15 knots turning southeasterly in the late evening.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres later in the evening.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure system centred west of Tasmania extends a ridge over western Victoria. A cold front over the far west of SA will weaken as it moves eastwards over central and eastern parts this morning. The high will move eastwards to be centred southeast of Tasmania later today but will continue to extend a ridge over SA early next week. Another front will move across the south of SA late Tuesday and early Wednesday then another high will move across waters to the south during Wednesday.
Granite Island Temperature Statistics View More
April Temperature
Encounter Bay (2km)
Lowest 8 April, 2026
7 °CAverage April
16.1 °CHighest 6 April, 2026
27.5 °C
Climate (2021–Present)
Encounter Bay (2km)
Average Low 2021–2026
10.5 °CAverage 2021–2026
15.2 °CAverage High 2021–2026
20.6 °C