Thelma Head Weather Forecast

    • 16
    • 23

    Becoming windy. Partly cloudy

    • 16
    • 22

    Partly cloudy

    • 15
    • 27

    Mostly sunny

    • 18
    • 34

    Partly cloudy

    • 20
    • 24

    Partly cloudy

    • 18
    • 26

    Partly cloudy

    • 18
    • 30

    Mostly sunny

Today 22 Jan Sydney

Becoming cloudy. Slight chance of a shower in the early afternoon. Light winds becoming southerly 15 to 25 km/h in the morning then tending south to southeasterly 25 to 40 km/h in the middle of the day.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Variable about 10 knots becoming southerly 15 to 25 knots in the morning. Winds reaching up to 30 knots during the afternoon and evening.
Seas
Below 0.5 metres, increasing to around 1 metre during the morning, then increasing to 1.5 to 2.5 metres around midday.
1st Swell
Southerly below 1 metre, increasing to 1 to 1.5 metres around midday, then tending southwesterly 1.5 to 2 metres by early evening.
Weather
Partly cloudy.
Weather Situation
A ridge lies over the NSW coast bringing east to southeasterly winds. Winds will briefly turn northeast to northwesterly ahead of a fresh to strong and gusty southerly change moving along the coast today. Winds are expected to ease from Friday and gradually turn northerly again as a high pressure system moves into the Tasman Sea, where it lingers over the weekend.
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Thelma Head Temperature Statistics View More

January Temperature

Bellambi (24km)

  • Lowest 1 January, 2026

    16.3 °C

  • Average January

    21.5 °C

  • Highest 10 January, 2026

    41.9 °C

Climate (2021–Present)

Bellambi (24km)

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  • Average Low 2021–2026

    15 °C

  • Average 2021–2026

    18 °C

  • Average High 2021–2026

    21.8 °C
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