Grassy Island Weather Forecast

    • 17
    • 26

    Shower

    • 19
    • 26

    Partly cloudy

    • 18
    • 27

    Partly cloudy

    • 18
    • 28

    Shower

    • 13
    • 25

    Sunny

    • 13
    • 26

    Sunny

    • 13
    • 26

    Sunny

Today 25 May Central Coast and Whitsundays

Partly cloudy. The chance of fog inland in the early morning. Slight chance of a shower, most likely in the late morning and afternoon. Light winds becoming east to southeasterly 15 to 20 km/h in the morning then becoming light in the evening. Overnight temperatures falling to between 11 and 17 with daytime temperatures reaching the mid to high 20s.

Mackay Costal Waters

Bowen to St Lawrence
Wind
Southeasterly 10 to 15 knots, reaching up to 20 knots offshore early in the morning.
Seas
1 to 1.5 metres, decreasing below 1 metre around midday.
1st Swell
Easterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Weather
Partly cloudy. 60% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grassy Island Temperature Statistics View More

May Temperature

Proserpine Airport (39km)

  • Lowest 22 May, 2026

    7.9 °C

  • Average May

    21 °C

  • Highest 19 May, 2026

    30.3 °C

Climate (2021–Present)

Proserpine Airport (39km)

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  • Average Low 2021–2026

    18.1 °C

  • Average 2021–2026

    22.9 °C

  • Average High 2021–2026

    29.2 °C
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