IDT11600
Australian Government Bureau of Meteorology
Tasmania

Forecast - Macquarie Island

Issued at 5:00 pm EDT on Monday 22 December 2025

Weather Situation:
A deep low pressure system well to the north will direct a northeast to
easterly flow over the island for the remainder of Monday. This low will weaken
into a trough and cross over the island Tuesday afternoon, shifting winds to a
west to northwesterly airstream. A broad area of low pressure will persist over
the island on Wednesday with two weak low pressure centres developing far to
the northeast and northwest. These two lows are expected to move around each
other in the waters between Macquarie Island and New Zealand resulting in
variable conditions until a south to southeasterly airstream develops on
Thursday, persisting into Friday.

Predictability of the positioning of this twin low pressure system is low, with
weather, wind and swell forecasts subject to change on Wednesday to Friday.

Forecast for the rest of Monday 22 December
Cloudy with possible late showers.
Winds: East to northeasterly 15 to 25 knots.
Seas: 1 to 2 metres.
Swell 1: Westerly around 1 metre.
Swell 2: North to northeasterly 2 to 3 metres, building.

Forecast for Tuesday 23 December
Showers tending to rain in the early morning with low cloud and mist
developing. Rain easing and mist clearing in the afternoon.
Winds: East to northeasterly 15 to 25 knots, possibly reaching 30 knots during the
morning. Winds shift west to northwesterly in the afternoon, easing to 10 to 20
knots late.
Seas: 2 to 3 metres, abating to 1 to 2 metres from the afternoon.
Swell 1: Westerly 1 to 2 metres
Swell 2: East to northeasterly around 2.5 to 3.5 metres, abating.

Outlook for Wednesday 24 December
Cloudy but fine, possible mist developing in the afternoon.
Winds: Light and variable winds, tending south to southeasterly 10 to 20 knots in the
evening. Seas: Under 1 metre. Swell1: Westerly 2 to 3 metres. Swell2: North to
northeasterly 1 to 2 metres, decaying. Swell 3: Southeasterly around 1 metre.

Outlook for Thursday 25 December
Possible showers, low cloud and mist developing from the early morning. High
chance of festive cheer with Santa clearing in the early morning.
Winds: South to southeasterly 15 to 25 knots. Seas: 1 to 2 metres. Swell1: Westerly
around 2 to 3 metres. Swell2: East to southeasterly around 1 metre.

Outlook for Friday 26 December
Slight chance of light showers, low cloud.
Winds: South to southwesterly 15 to 25 knots. Seas: 1 to 2 metres. Swell1: Westerly 2
to 3 metres. Swell2: East to southeasterly around 1 metre.

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