BoM Grantham Marine Weather Forecast

Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots north of Cairns during the day.

Seas: 1 to 1.5 metres, increasing to 1 to 2 metres north of Cairns.

Swell: Southeasterly 1 to 2 metres outside the reef, decreasing to 1 to 1.5 metres during the afternoon.

Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots north of Cairns during the day.

Seas: 1 to 1.5 metres, increasing to 1 to 2 metres north of Cairns.

Swell: Southeasterly 1 to 2 metres outside the reef, decreasing to 1 to 1.5 metres during the morning.

Winds: Southeasterly 15 to 25 knots.

Seas: Around 1 metre, increasing to 1 to 2 metres outside the reef.

Swell: Southeasterly 1 to 2 metres outside the reef, decreasing to 1 to 1.5 metres during the morning.

Winds: Southeasterly 15 to 20 knots.

Seas: 1 to 1.5 metres.

Swell: East to southeasterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.

Winds: Southeasterly 15 to 20 knots.

Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore north of Agnes Water.

Swell: East to southeasterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.

Winds: Southeasterly 10 to 15 knots turning easterly below 10 knots during the afternoon.

Seas: Around 1 metre.

Swell: Easterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.

Winds: Southeasterly 20 to 25 knots, reaching up to 30 knots north of Cooktown in the late morning and afternoon.

Seas: 1 to 1.5 metres, increasing to 2 metres outside the reef.

Swell: Southeasterly 1 to 2 metres outside the reef, decreasing to 1 to 1.5 metres around midday.

Winds: Southeasterly 20 to 25 knots.

Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres outside the reef.

Swell: East to southeasterly 1 to 1.5 metres outside the reef.

Winds: Southeasterly 20 to 25 knots.

Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres outside the reef.

Swell: East to southeasterly 1 to 1.5 metres outside the reef.

Winds: Southeasterly 10 to 15 knots, reaching up to 20 knots north of Point Lookout during the morning. Winds decreasing to about 10 knots in the late evening.

Seas: Around 1 metre.

Swell: Southeasterly around 1 metre inshore, increasing to 1.5 metres offshore. Southeasterly around 1 metre.

Winds: East to southeasterly about 10 knots becoming northeasterly in the late evening.

Seas: Below 1 metre.

Swell: Southeasterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore.

Winds: Northerly about 10 knots increasing to 10 to 15 knots during the morning.

Seas: Below 0.5 metres, increasing to around 1 metre during the morning.

Swell: Southeasterly 1 to 1.5 metres, tending easterly below 1 metre during the morning.

Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots north of Creal Reef in the evening.

Seas: 1 to 1.5 metres, increasing to 1 to 2 metres north of Creal Reef.

Swell: East to southeasterly around 1 metre, increasing to 1 to 1.5 metres through the Capricorn Channel.

Winds: Southeasterly 15 to 20 knots.

Seas: 1 to 1.5 metres, increasing to 1 to 2 metres north of Creal Reef.

Swell: East to southeasterly around 1 metre, increasing to 1 to 1.5 metres through the Capricorn Channel.

Winds: Southeasterly 15 to 20 knots.

Seas: 1 to 1.5 metres.

Swell: East to southeasterly around 1 metre, increasing to 1 to 1.5 metres through the Capricorn Channel.

Winds: Southeasterly 15 to 20 knots.

Seas: Around 1 metre, increasing to 1 to 1.5 metres in the northern bay during the morning.

Swell: North to northeasterly below 1 metre.

Winds: Southeasterly 10 to 15 knots decreasing to about 10 knots in the late evening.

Seas: Around 1 metre.

Swell: North to northeasterly below 1 metre.

Winds: Variable about 10 knots.

Seas: Below 1 metre.

Swell: North to northeasterly below 1 metre.

Winds: Southeasterly 15 to 20 knots.

Seas: 1 to 1.5 metres.

Swell: Southeasterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore.

Winds: Southeasterly 15 to 20 knots turning easterly 10 to 15 knots in the evening.

Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon.

Swell: Southeasterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore.

Winds: Easterly 10 to 15 knots becoming variable about 10 knots during the day.

Seas: Below 1 metre.

Swell: Easterly around 1 metre.

Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots offshore north of Hamilton Island in the evening.

Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres offshore north of Hamilton Island.

Swell: Easterly around 1 metre offshore.

Winds: Southeasterly 15 to 20 knots.

Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres offshore north of Hamilton Island.

Swell: Easterly around 1 metre offshore.

Winds: Southeasterly 15 to 20 knots.

Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore.

Swell: Easterly around 1 metre offshore.

Winds: Southerly 10 to 15 knots turning southeasterly in the morning.

Seas: Below 1 metre.

Winds: South to southeasterly below 10 knots becoming east to northeasterly in the middle of the day.

Seas: Below 1 metre.

Winds: Variable below 10 knots becoming northerly 10 to 15 knots during the day.

Seas: Below 1 metre.

Winds: East to southeasterly 10 to 15 knots tending southeast to southwesterly in the late afternoon then tending east to southeasterly in the late evening. Winds reaching up to 20 knots offshore during the morning and again in the late evening.

Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon.

Swell: East to northeasterly below 1 metre.

Winds: Easterly 15 to 20 knots turning south to southeasterly 10 to 15 knots in the late morning and afternoon then tending east to southeasterly 15 to 20 knots in the late evening.

Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon.

Swell: East to northeasterly below 1 metre.

Winds: Easterly 15 to 20 knots tending southeast to southwesterly 10 to 15 knots during the afternoon then tending east to southeasterly during the evening.

Seas: 1 to 1.5 metres, decreasing to 1 metre during the evening.

Swell: Northeasterly below 1 metre.

Winds: Southeasterly 20 to 30 knots decreasing to 20 to 25 knots in the early morning then increasing to 20 to 30 knots in the early afternoon.

Seas: 1 to 1.5 metres, increasing to 2 to 2.5 metres outside the reef.

Swell: Southeasterly below 1 metre, increasing to 1 to 1.5 metres outside the reef.

Winds: Southeasterly 20 to 25 knots.

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 2 metres outside the reef.

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.

Winds: Northeast to southeasterly 15 to 20 knots tending southeast to southwesterly 10 to 15 knots in the evening.

Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon.

Swell: East to northeasterly below 1 metre.

Winds: Southeast to southwesterly 15 to 20 knots tending northeast to southeasterly before dawn then tending southeast to southwesterly 10 to 15 knots in the evening. Winds reaching up to 25 knots inshore during the morning.

Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing to 1 metre during the afternoon.

Swell: East to northeasterly below 1 metre.

Winds: Southeast to southwesterly 10 to 15 knots tending northeast to southeasterly 15 to 20 knots during the morning then tending southeast to southwesterly 10 to 15 knots during the afternoon.

Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon or evening.

Swell: Northeasterly below 1 metre.

Winds: Southeasterly 15 to 20 knots.

Seas: Around 1 metre, increasing to 1 to 1.5 metres north of Maroochydore.

Swell: Southeasterly around 1 metre inshore, increasing to 1.5 metres offshore.

Winds: Southeasterly 10 to 15 knots, reaching up to 20 knots offshore north of Maroochydore during the morning. Winds turning easterly below 10 knots in the late afternoon.

Seas: Around 1 metre.

Swell: Southeasterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore.

Winds: Variable about 10 knots becoming northeasterly 10 to 15 knots during the afternoon then tending northerly during the evening.

Seas: Below 1 metre.

Swell: Southeasterly 1 to 1.5 metres, tending easterly around 1 metre during the morning.

Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots offshore east of Cape York in the late evening.

Seas: 1 to 1.5 metres, increasing to 1 to 2 metres outside the reef.

Swell: East to southeasterly below 1 metre, increasing to 1 to 1.5 metres outside the reef.

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 below 1 metre, increasing to 1 to 1.5 metres outside the reef.

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 below 1 metre, increasing to 1 to 1.5 metres outside the reef.

Winds: Southeasterly 15 to 25 knots.

Seas: 1 to 1.5 metres, increasing to 1 to 2 metres by early evening.

Swell: Easterly 1 to 1.5 metres outside the reef.

Winds: Southeasterly 15 to 25 knots.

Seas: 1 to 1.5 metres, increasing to 1 to 2 metres outside the reef.

Swell: Easterly 1 to 1.5 metres outside the reef.

Winds: Southeasterly 15 to 20 knots.

Seas: 1 to 1.5 metres.

Swell: Easterly 1 to 1.5 metres outside the reef, decreasing to around 1 metre during the evening.