Cap Island Weather Forecast
- 15
- 23
Partly cloudy
- 18
- 19
Partly cloudy
- 16
- 19
Partly cloudy
- 17
- 24
Partly cloudy
- 18
- 20
Partly cloudy
- 16
- 21
Partly cloudy
- 20
- 23
Partly cloudy
Today 18 Apr West Coast
Partly cloudy. Slight chance of a shower west of Nullarbor, near zero chance elsewhere. The chance of a thunderstorm west of Nullarbor. Winds northwest to northeasterly 20 to 30 km/h tending south to southwesterly 15 to 25 km/h in the late evening.
Lower West Coastal Waters
Elliston to Cape Carnot- Wind
- Northerly 10 to 15 knots turning west to northwesterly in the evening.
- Seas
- Around 1 metre.
- 1st Swell
- Southwesterly 1 to 1.5 metres, decreasing to around 1 metre later in the evening.
- Weather
- Partly cloudy. 50% chance of showers. The chance of a thunderstorm later this evening.
- 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 on Sunday morning. The high will move eastwards to be centred southeast of Tasmania later Sunday 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.
Cap Island Temperature Statistics View More
April Temperature
Cummins Airport (64km)
Lowest 14 April, 2026
4.5 °CAverage April
16.1 °CHighest 4 April, 2026
28.2 °C
Climate (2021–Present)
Cummins Airport (64km)
Average Low 2021–2026
9.5 °CAverage 2021–2026
15.6 °CAverage High 2021–2026
22.9 °C