Grassy Island Weather Forecast
- 15
- 25
Sunny
- 15
- 24
Partly cloudy
- 16
- 24
Partly cloudy
- 17
- 23
Partly cloudy
- 17
- 24
Partly cloudy
- 15
- 25
Partly cloudy
- 15
- 24
Partly cloudy
Today 24 Jul Central Coast and Whitsundays
The chance of fog in the early morning. Mostly sunny day. Light winds becoming southeasterly 15 to 25 km/h in the morning then becoming light in the evening. Overnight temperatures falling to between 8 and 13 with daytime temperatures reaching 22 to 27.
Mackay Costal Waters
Bowen to St Lawrence- Wind
- Southeasterly 15 to 20 knots, reaching up to 25 knots offshore north of Hamilton Island in the early afternoon.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres offshore during the morning.
- 1st Swell
- Easterly below 1 metre.
- Weather
- Mostly sunny.
Grassy Island Temperature Statistics View More
July Temperature
Proserpine Airport (39km)
Lowest 19 July, 2026
5.4 °CAverage July
18.1 °CHighest 12 July, 2026
27 °C
Climate (2021–2026)
Proserpine Airport (39km)
Average Low 2021–2026
18.1 °CAverage 2021–2026
22.9 °CAverage High 2021–2026
29.2 °C