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Great Barrier Reef Offshore Waters Forecast

Local Waters Forecast for Great Barrier Reef Offshore Waters

Issued: Thursday, 21 May 9:00PM

Forecast for Thursday, 21 May
Weather: Partly cloudy.
Winds: South to southeasterly 20 to 25 knots.
Seas: 1.5 to 2 metres.
Swell: Southeasterly around 1 metre, increasing to 1.5 to 2 metres through the Capricorn Channel.
Forecast for Friday, 22 May
Weather: Mostly sunny.
Winds: South to southeasterly 15 to 25 knots.
Seas: 1 to 2 metres, decreasing to 1 to 1.5 metres around midday.
Swell: Southeasterly 1 to 1.5 metres, increasing to 2 to 3 metres through the Capricorn Channel.
Forecast for Saturday, 23 May
Weather: Partly cloudy.
Winds: Southerly 15 to 25 knots turning southeasterly in the evening.
Seas: 1 to 2 metres.
Swell: Southeasterly 2 to 3 metres.
Forecast for Sunday, 24 May
Weather: Partly cloudy. 60% chance of showers.
Winds: Southeasterly 15 to 25 knots.
Seas: 1 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
Swell: Southeasterly 1 to 1.5 metres, increasing to 2 to 3 metres through the Capricorn Channel.
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Forecast for Thursday, 21 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots offshore north of Cairns.
Seas: Around 1 metre, increasing to 1 to 2 metres outside the reef.
Swell: Southeasterly below 1 metre, increasing to 1 to 1.5 metres outside the reef.
Forecast for Friday, 22 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots offshore north of Cairns during the morning.
Seas: 1 to 2 metres.
Swell: Southeasterly below 1 metre, increasing to 1 to 1.5 metres outside the reef.
Forecast for Saturday, 23 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots.
Seas: Around 1 metre, increasing to 1 to 1.5 metres north of Cairns.
Swell: Southeasterly 1 to 1.5 metres outside the reef, decreasing to around 1 metre by early evening.
Forecast for Sunday, 24 May
Weather: Partly cloudy.
Winds: South to southeasterly 15 to 20 knots.
Seas: Around 1 metre.
Swell: Southeasterly around 1 metre outside the reef.

Forecast for Thursday, 21 May
Weather: Mostly clear.
Winds: Southerly 15 to 20 knots, reaching up to 30 knots offshore.
Seas: Below 1 metre, increasing to 1.5 to 2.5 metres offshore.
Swell: Southerly 1 to 2 metres offshore southern waters. East to southeasterly below 1 metre inshore, increasing to 1.5 to 2.5 metres offshore.
Forecast for Friday, 22 May
Weather: Sunny.
Winds: Southerly 20 to 30 knots decreasing to 15 to 25 knots before dawn then increasing to 20 to 30 knots in the middle of the day.
Seas: Around 1 metre, increasing to 2 to 3 metres offshore.
Swell: East to southeasterly 2 to 3 metres, increasing to 2 to 4 metres by early evening.
Forecast for Saturday, 23 May
Weather: Mostly sunny. 50% chance of showers offshore south of Cape Capricorn, near zero chance elsewhere.
Winds: Southerly 20 to 30 knots.
Seas: 1 to 1.5 metres, increasing to 2 to 3 metres offshore south of Cape Capricorn.
Swell: East to southeasterly below 1 metre inshore, increasing to 3 to 5 metres offshore.
Forecast for Sunday, 24 May
Weather: Partly cloudy.
Winds: Southerly 20 to 25 knots turning southeasterly 15 to 25 knots during the day.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres offshore.
Swell: Southeasterly below 1 metre inshore, increasing to 2 to 4 metres offshore.

Forecast for Thursday, 21 May
Weather: Partly cloudy.
Winds: Southeasterly 20 to 25 knots, reaching up to 30 knots inshore.
Seas: 1 to 1.5 metres, increasing to 2 metres outside the reef.
Swell: Southeasterly 1 to 1.5 metres outside the reef.
Forecast for Friday, 22 May
Weather: Partly cloudy.
Winds: Southeasterly 20 to 25 knots.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres outside the reef.
Swell: Southeasterly 1 to 1.5 metres outside the reef.
Forecast for Saturday, 23 May
Weather: Partly cloudy.
Winds: Southeasterly 20 to 25 knots.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres outside the reef.
Swell: Southeasterly 1 to 1.5 metres outside the reef, decreasing to around 1 metre by early evening.
Forecast for Sunday, 24 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon.
Swell: Southeasterly around 1 metre outside the reef.

Forecast for Thursday, 21 May
Weather: Cloudy. 60% chance of showers.
Winds: Southerly 20 to 25 knots, reaching up to 30 knots offshore.
Seas: 1.5 to 2 metres, increasing to 3 metres offshore.
Swell: Southerly 1.5 to 2 metres inshore, increasing to 2.5 to 3 metres offshore.
Forecast for Friday, 22 May
Weather: Partly cloudy. 80% chance of showers.
Winds: Southerly 25 to 30 knots, reaching up to 35 knots offshore during the day.
Seas: 2.5 to 3 metres.
Swell: Southerly 2.5 to 4 metres, increasing to 4 to 6 metres during the morning.
Forecast for Saturday, 23 May
Weather: Partly cloudy. 90% chance of showers.
Winds: Southerly 25 to 30 knots.
Seas: 2.5 to 3 metres.
Swell: Southeasterly 2 to 3 metres inshore, increasing to 4 to 5 metres offshore.
Forecast for Sunday, 24 May
Weather: Partly cloudy. 90% chance of showers.
Winds: South to southeasterly 20 to 30 knots.
Seas: 1.5 to 2.5 metres.
Swell: Southeasterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore.

Forecast for Thursday, 21 May
Weather: Mostly clear.
Winds: Southerly 15 to 20 knots, reaching up to 25 knots in the northern bay.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres in the northern bay.
Swell: Below 0.5 metres.
Forecast for Friday, 22 May
Weather: Mostly sunny.
Winds: Southerly 15 to 20 knots.
Seas: 1 to 1.5 metres.
Swell: Northeasterly below 1 metre.
Forecast for Saturday, 23 May
Weather: Partly cloudy.
Winds: Southerly 15 to 25 knots.
Seas: 1 to 1.5 metres, increasing to 1 to 2 metres around midday.
Swell: Northeasterly below 1 metre.
Forecast for Sunday, 24 May
Weather: Partly cloudy.
Winds: Southerly 15 to 20 knots.
Seas: 1 to 1.5 metres.
Swell: Northeasterly below 1 metre.

Forecast for Thursday, 21 May
Weather: Cloudy. 60% chance of showers.
Winds: Southerly 25 to 30 knots.
Seas: 2.5 to 3 metres.
Swell: Southerly 1.5 to 2 metres inshore, increasing to 2.5 to 3 metres offshore. East to northeasterly around 1 metre offshore.
Forecast for Friday, 22 May
Weather: Partly cloudy. 70% chance of showers.
Winds: Southerly 25 to 30 knots, reaching up to 35 knots offshore in the evening.
Seas: 2.5 to 3 metres.
Swell: Southerly 2.5 to 3 metres, increasing to 3 to 5 metres during the morning.
Forecast for Saturday, 23 May
Weather: Partly cloudy. 90% chance of showers offshore, 60% chance elsewhere.
Winds: Southerly 25 to 30 knots.
Seas: 2.5 to 3 metres.
Swell: South to southeasterly 2 to 3 metres inshore, increasing to 4 to 5 metres offshore.
Forecast for Sunday, 24 May
Weather: Partly cloudy. 80% chance of showers.
Winds: South to southeasterly 20 to 30 knots.
Seas: 1.5 to 2.5 metres.
Swell: Southeasterly 2.5 to 3 metres inshore, increasing to 2.5 to 4 metres offshore.

Forecast for Thursday, 21 May
Weather: Mostly clear.
Winds: Southeasterly 15 to 20 knots.
Seas: Below 1 metre, increasing to 1 to 1.5 metres offshore.
Swell: Easterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Forecast for Friday, 22 May
Weather: Mostly sunny.
Winds: South to southeasterly 15 to 20 knots.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon.
Swell: Easterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Forecast for Saturday, 23 May
Weather: Sunny.
Winds: Southerly 10 to 15 knots turning southeasterly 15 to 20 knots in the late afternoon.
Seas: Below 1 metre, increasing to 1 to 1.5 metres offshore.
Swell: Easterly below 1 metre inshore, increasing to 1 to 2 metres offshore.
Forecast for Sunday, 24 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 25 knots.
Seas: Below 1 metre, increasing to 1 to 2 metres offshore.
Swell: Easterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.

Forecast for Thursday, 21 May
Weather: Mostly clear.
Winds: South to southwesterly 15 to 20 knots, reaching up to 25 knots in the northern bay.
Seas: 1 to 1.5 metres, increasing to 1 to 2 metres in the far north.
Forecast for Friday, 22 May
Weather: Partly cloudy.
Winds: South to southwesterly 15 to 20 knots, reaching up to 30 knots in the eastern bay in the early afternoon.
Seas: Around 1 metre, increasing to 1 to 1.5 metres in the far north.
Forecast for Saturday, 23 May
Weather: Partly cloudy. 50% chance of showers.
Winds: Southwesterly 15 to 20 knots turning southerly early in the morning.
Seas: Around 1 metre, increasing to 1 to 1.5 metres in the northern bay around midday.
Forecast for Sunday, 24 May
Weather: Partly cloudy. 70% chance of showers.
Winds: Southerly 15 to 20 knots.
Seas: Around 1 metre.

Forecast for Thursday, 21 May
Weather: Mostly clear.
Winds: East to southeasterly 15 to 20 knots.
Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore south of Cullen Point.
Swell: Southerly below 1 metre.
Forecast for Friday, 22 May
Weather: Mostly sunny.
Winds: East to southeasterly 15 to 20 knots.
Seas: 1 to 1.5 metres.
Swell: Southeast to southwesterly below 1 metre.
Forecast for Saturday, 23 May
Weather: Sunny.
Winds: Easterly 15 to 20 knots turning south to southeasterly 10 to 15 knots in the afternoon then tending east to southeasterly 15 to 20 knots in the late evening.
Seas: 1 to 1.5 metres, decreasing to 1 metre by early evening.
Swell: Southeast to southwesterly below 1 metre.
Forecast for Sunday, 24 May
Weather: Mostly sunny.
Winds: Easterly 15 to 20 knots turning south to southeasterly 10 to 15 knots during the afternoon.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon or evening.
Swell: Below 0.5 metres.

Forecast for Thursday, 21 May
Weather: Partly cloudy.
Winds: Southeasterly 20 to 25 knots.
Seas: 1 to 1.5 metres, increasing to 2 metres outside the reef.
Swell: Southeasterly below 1 metre, increasing to 1 to 1.5 metres outside the reef.
Forecast for Friday, 22 May
Weather: Partly cloudy.
Winds: Southeasterly 20 to 25 knots.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres outside the reef.
Swell: Southeasterly below 1 metre, increasing to 1 to 1.5 metres outside the reef.
Forecast for Saturday, 23 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots.
Seas: 1 to 1.5 metres.
Swell: Southeasterly around 1 metre outside the reef.
Forecast for Sunday, 24 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots.
Seas: Around 1 metre, increasing to 1 to 1.5 metres outside the reef.
Swell: Southeasterly around 1 metre outside the reef.

Forecast for Thursday, 21 May
Weather: Clear.
Winds: Southeasterly 15 to 20 knots.
Seas: Below 1 metre, increasing to 1 to 1.5 metres offshore.
Forecast for Friday, 22 May
Weather: Sunny.
Winds: East to southeasterly 15 to 20 knots.
Seas: 1 to 1.5 metres, decreasing to 1 metre by early evening.
Swell: East to northeasterly below 1 metre.
Forecast for Saturday, 23 May
Weather: Sunny.
Winds: South to southeasterly 15 to 20 knots tending east to southeasterly before dawn then tending south to southeasterly 10 to 15 knots in the late evening.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon.
Swell: Northeasterly below 1 metre.
Forecast for Sunday, 24 May
Weather: Mostly sunny.
Winds: South to southeasterly 10 to 15 knots tending east to southeasterly during the morning then tending southeast to southwesterly during the evening.
Seas: Around 1 metre.
Swell: Below 0.5 metres.

Forecast for Thursday, 21 May
Weather: Partly cloudy. 60% chance of showers offshore, near zero chance elsewhere.
Winds: Southerly 20 to 25 knots, reaching up to 30 knots offshore.
Seas: 2.5 to 3 metres.
Swell: Southerly 1 to 1.5 metres inshore, increasing to 2.5 to 3 metres offshore.
Forecast for Friday, 22 May
Weather: Partly cloudy. 60% chance of showers.
Winds: Southerly 25 to 30 knots, reaching up to 35 knots offshore during the afternoon and evening.
Seas: 2.5 to 3 metres.
Swell: Southerly 2 to 4 metres, increasing to 4 to 6 metres around midday.
Forecast for Saturday, 23 May
Weather: Partly cloudy. 90% chance of showers offshore, 60% chance elsewhere.
Winds: Southerly 25 to 30 knots.
Seas: 2.5 to 3 metres.
Swell: South to southeasterly 1.5 to 2.5 metres inshore, increasing to 4 to 5 metres offshore.
Forecast for Sunday, 24 May
Weather: Partly cloudy. 80% chance of showers.
Winds: South to southeasterly 20 to 30 knots.
Seas: 2 to 2.5 metres.
Swell: Southeasterly 2 to 2.5 metres inshore, increasing to 2.5 to 4 metres offshore.

Forecast for Thursday, 21 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots offshore east of Cape York.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres outside the reef.
Swell: Southeast to southwesterly below 1 metre, increasing to 1 to 1.5 metres outside the reef.
Forecast for Friday, 22 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots offshore east of Cape York early in the morning.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres outside the reef.
Swell: East to southeasterly below 1 metre, increasing to 1 to 1.5 metres outside the reef.
Forecast for Saturday, 23 May
Weather: Mostly sunny.
Winds: Southeasterly 15 to 20 knots.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres outside the reef.
Swell: East to southeasterly around 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing to around 1 metre during the afternoon.
Forecast for Sunday, 24 May
Weather: Mostly sunny.
Winds: Southeasterly 15 to 20 knots.
Seas: Around 1 metre, increasing to 1 to 1.5 metres outside the reef.
Swell: East to southeasterly around 1 metre.

Forecast for Thursday, 21 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots offshore south of Cape Bowling Green.
Seas: 1 to 1.5 metres.
Swell: Easterly below 1 metre, increasing to around 1 metre outside the reef.
Forecast for Friday, 22 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots offshore south of Cape Bowling Green early in the morning.
Seas: 1 to 1.5 metres, decreasing to 1 metre by early evening.
Swell: Easterly around 1 metre outside the reef, increasing to 1 to 1.5 metres during the morning.
Forecast for Saturday, 23 May
Weather: Mostly sunny.
Winds: Southeasterly 10 to 15 knots.
Seas: Around 1 metre.
Swell: Easterly around 1 metre outside the reef.
Forecast for Sunday, 24 May
Weather: Partly cloudy.
Winds: Southeasterly 15 to 20 knots.
Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
Swell: Easterly around 1 metre outside the reef.
Square Reef
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Square Reef
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Tides
Square Reef
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Current: 3.38m
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