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BoM Old Plains Marine Weather Forecast

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Other WA Coastal Waters Forecasts

Forecast for Thursday, 6 August
Weather: Cloudy. 60% chance of showers. The chance of a thunderstorm offshore east of Albany.
Winds: Westerly 15 to 20 knots turning southwesterly in the late evening.
Seas: 1.5 to 2 metres.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 4 metres offshore.
Forecast for Friday, 7 August
Weather: Cloudy. 90% chance of showers. The chance of a thunderstorm.
Winds: West to southwesterly 15 to 20 knots tending west to northwesterly 20 to 25 knots during the morning and early afternoon. Winds reaching up to 30 knots during the afternoon and evening.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres around midday.
Swell: Southwesterly 3 to 5 metres.
Forecast for Saturday, 8 August
Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning and afternoon. Possible small hail.
Winds: West to southwesterly 25 to 30 knots becoming southwesterly 30 to 35 knots in the middle of the day then decreasing to 25 to 30 knots in the evening.
Seas: 2 to 3 metres.
Swell: Southwesterly 4 to 7 metres.
Forecast for Sunday, 9 August
Weather: Cloudy. 95% chance of showers.
Winds: Southwesterly 20 to 30 knots turning westerly during the day.
Seas: 2 to 3 metres, decreasing to 1.5 to 2 metres during the morning.
Swell: Southwesterly 5 to 7 metres, decreasing to 4 to 5 metres during the afternoon or evening.

Forecast for Thursday, 6 August
Weather: Cloudy. 70% chance of showers.
Winds: Westerly 10 to 15 knots, reaching up to 20 knots offshore in the evening. Winds turning southwesterly in the evening.
Seas: Around 1 metre, increasing to 1.5 metres offshore.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore.
Forecast for Friday, 7 August
Weather: Partly cloudy. 95% chance of showers. The chance of a thunderstorm in the morning.
Winds: Southwesterly 10 to 15 knots turning westerly 15 to 25 knots in the morning. Winds reaching up to 30 knots in the evening.
Seas: Around 1 metre, increasing to 1.5 to 2.5 metres around midday.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore.
Forecast for Saturday, 8 August
Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning. Possible small hail in the morning and afternoon.
Winds: Westerly 25 to 30 knots tending southwesterly 20 to 30 knots before dawn.
Seas: 2 to 3 metres.
Swell: Southwesterly 3 to 4 metres, increasing to 4 to 6 metres during the morning.
Forecast for Sunday, 9 August
Weather: Cloudy. 90% chance of showers.
Winds: Southwesterly 15 to 25 knots turning westerly 15 to 20 knots during the afternoon.
Seas: 1.5 to 2.5 metres, decreasing to 1 metre during the morning.
Swell: Southwesterly 4 to 6 metres, decreasing to 3 to 4 metres during the evening.

Forecast for Thursday, 6 August
Weather: Partly cloudy. The chance of a thunderstorm west of Esperance.
Winds: North to northeasterly 10 to 15 knots, reaching up to 20 knots west of Hopetoun in the evening. Winds turning west to northwesterly in the late evening.
Seas: Around 1 metre.
Swell: Southwesterly 2.5 to 4 metres.
Forecast for Friday, 7 August
Weather: Partly cloudy. 80% chance of showers. The chance of a thunderstorm.
Winds: West to northwesterly 15 to 20 knots tending west to southwesterly in the early morning then tending west to northwesterly in the late afternoon. Winds reaching up to 30 knots west of Hopetoun in the late evening.
Seas: Around 1 metre, increasing to 1 to 1.5 metres west of Esperance during the morning.
Swell: Southwesterly 2.5 to 4 metres.
Forecast for Saturday, 8 August
Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the afternoon and early evening. Possible small hail.
Winds: Northwesterly 20 to 30 knots turning southwesterly 30 to 35 knots during the day.
Seas: 1 to 1.5 metres, increasing to 2 to 3 metres during the morning.
Swell: Southwesterly 3 to 5 metres, increasing to 4 to 7 metres west of Hopetoun during the morning.
Forecast for Sunday, 9 August
Weather: Cloudy. 95% chance of showers, with possible small hail in the morning.
Winds: Southwesterly 25 to 35 knots turning westerly 20 to 25 knots during the afternoon.
Seas: 2 to 3 metres, decreasing below 2 metres during the afternoon or evening.
Swell: Southwesterly 4 to 7 metres, decreasing to 4 to 5 metres during the evening.

Forecast for Thursday, 6 August
Weather: Cloudy. 60% chance of showers.
Winds: Northeasterly 10 to 15 knots, reaching up to 20 knots east of Eyre in the evening. Winds turning northerly in the late evening.
Seas: Around 1 metre.
Swell: Southwesterly 2 to 2.5 metres.
Forecast for Friday, 7 August
Weather: Mostly sunny. 50% chance of showers.
Winds: North to northwesterly 10 to 15 knots tending northwest to southwesterly in the morning then becoming variable about 10 knots in the early afternoon.
Seas: Around 1 metre.
Swell: Southwesterly 2 to 2.5 metres.
Forecast for Saturday, 8 August
Weather: Partly cloudy. 95% chance of showers. The chance of a thunderstorm in the afternoon and early evening. Possible small hail in the late afternoon and evening.
Winds: North to northwesterly 15 to 25 knots turning westerly 20 to 30 knots in the late morning then increasing to 30 to 35 knots in the late evening.
Seas: Below 1 metre, increasing to 1 to 2 metres during the morning, then increasing to 2 to 3 metres around midday.
Swell: Southwesterly 1.5 to 2.5 metres.
Forecast for Sunday, 9 August
Weather: Cloudy. 95% chance of showers. The chance of a thunderstorm in the morning. Possible small hail in the morning.
Winds: Southwesterly 25 to 35 knots turning westerly 15 to 20 knots during the evening.
Seas: 2 to 3 metres.
Swell: Southwesterly 2 to 3 metres, increasing to 3 to 5 metres during the morning.

Forecast for Thursday, 6 August
Weather: Cloudy.
Winds: Southerly 10 to 15 knots.
Seas: Below 1 metre.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 4 metres offshore south of Denham.
Forecast for Friday, 7 August
Weather: Cloudy. 60% chance of showers.
Winds: Southeast to southwesterly 10 to 15 knots becoming variable about 10 knots before dawn then becoming northwest to southwesterly 10 to 15 knots in the late afternoon. Winds reaching up to 20 knots offshore south of Denham in the late evening.
Seas: Below 1 metre.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore south of Denham.
Forecast for Saturday, 8 August
Weather: Partly cloudy. 70% chance of showers.
Winds: Southwesterly 15 to 25 knots turning southerly 20 to 30 knots during the day.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
Swell: Southwesterly 2.5 to 3 metres, increasing to 3 to 5 metres during the morning.
Forecast for Sunday, 9 August
Weather: Cloudy.
Winds: South to southeasterly 15 to 25 knots tending east to southeasterly 15 to 20 knots during the morning then tending south to southeasterly 10 to 15 knots during the afternoon.
Seas: 1 to 2 metres, decreasing to 1 to 1.5 metres during the afternoon.
Swell: Southwesterly 4 to 6 metres.

Forecast for Thursday, 6 August
Weather: Partly cloudy.
Winds: West to southwesterly about 10 knots.
Seas: Below 1 metre.
Swell: Southwesterly 3 metres inshore, increasing to 3 to 4 metres offshore.
Forecast for Friday, 7 August
Weather: Partly cloudy. 90% chance of showers.
Winds: Westerly 10 to 15 knots turning southwesterly 15 to 20 knots in the evening. Winds reaching up to 25 knots offshore south of Geraldton in the late evening.
Seas: Around 1 metre.
Swell: Southwesterly 2.5 to 3 metres inshore, increasing to 3 to 4 metres offshore south of Geraldton.
Forecast for Saturday, 8 August
Weather: Partly cloudy. 90% chance of showers.
Winds: Southwesterly 15 to 25 knots increasing to 20 to 30 knots before dawn then tending southerly 20 to 25 knots in the evening.
Seas: 1 to 2 metres, increasing to 2 to 3 metres during the morning.
Swell: Southwesterly 3 to 4 metres, increasing to 4 to 6 metres around midday.
Forecast for Sunday, 9 August
Weather: Cloudy. 50% chance of showers.
Winds: Southerly 15 to 20 knots turning east to southeasterly 10 to 15 knots during the morning then becoming variable about 10 knots during the day.
Seas: 1 to 2 metres, decreasing below 1 metre during the morning.
Swell: Southwesterly 4 to 6 metres.

Forecast for Thursday, 6 August
Weather: Partly cloudy.
Winds: Westerly 10 to 15 knots.
Seas: Below 1 metre.
Swell: Southwesterly 3 metres inshore, increasing to 4 metres offshore.
Forecast for Friday, 7 August
Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning.
Winds: West to southwesterly 15 to 25 knots, reaching up to 30 knots offshore in the late evening.
Seas: Around 1 metre.
Swell: Southwesterly 3 metres inshore, increasing to 4 metres offshore.
Forecast for Saturday, 8 August
Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning.
Winds: West to southwesterly 25 to 30 knots turning southerly 20 to 25 knots in the evening.
Seas: 2 to 3 metres.
Swell: Southwesterly 3 to 4 metres, increasing to 4 to 6 metres during the morning.
Forecast for Sunday, 9 August
Weather: Cloudy. 70% chance of showers.
Winds: Southerly 15 to 20 knots becoming variable about 10 knots during the morning then becoming west to southwesterly 10 to 15 knots during the evening.
Seas: 1 to 2 metres, decreasing below 1 metre during the morning.
Swell: Southwesterly 5 to 7 metres, decreasing to 5 metres during the afternoon or evening.

Forecast for Thursday, 6 August
Weather: Partly cloudy.
Winds: Southwesterly 15 to 20 knots.
Seas: 1.5 metres.
Swell: Southwesterly 4 to 5 metres.
Forecast for Friday, 7 August
Weather: Cloudy. 95% chance of showers. The chance of a thunderstorm in the late afternoon and evening.
Winds: Southwesterly 10 to 15 knots tending westerly 15 to 25 knots in the early morning then increasing to 20 to 30 knots in the middle of the day. Winds reaching up to 35 knots offshore east of Cape Leeuwin in the late evening.
Seas: Around 1 metre, increasing to 1.5 to 2 metres during the morning, then increasing to 2 to 3 metres during the afternoon.
Swell: Southwesterly 4 to 5 metres.
Forecast for Saturday, 8 August
Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning. Possible small hail in the morning and afternoon.
Winds: Southwesterly 30 to 35 knots decreasing to 20 to 30 knots in the early morning.
Seas: 2.5 to 3 metres.
Swell: Southwesterly 4 to 7 metres.
Forecast for Sunday, 9 August
Weather: Cloudy. 90% chance of showers.
Winds: Southwesterly 15 to 25 knots turning westerly 20 to 30 knots during the day.
Seas: 1.5 to 2.5 metres.
Swell: Southwesterly 5 to 7 metres, decreasing to 4 to 5 metres during the afternoon or evening.

Forecast for Thursday, 6 August
Weather: Cloudy.
Winds: Southerly 10 to 15 knots.
Seas: Below 1 metre.
Swell: Southwesterly 2.5 to 3 metres.
Forecast for Friday, 7 August
Weather: Cloudy.
Winds: South to southeasterly 10 to 15 knots decreasing to about 10 knots in the morning.
Seas: Below 1 metre.
Swell: Southwesterly 2.5 to 3 metres.
Forecast for Saturday, 8 August
Weather: Cloudy. 60% chance of showers.
Winds: Southerly 15 to 25 knots increasing to 20 to 30 knots in the evening then decreasing to 20 to 25 knots in the late evening.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning, then increasing to 1 to 2 metres around midday.
Swell: Southwesterly 2.5 to 3 metres.
Forecast for Sunday, 9 August
Weather: Mostly sunny.
Winds: Southeasterly 15 to 25 knots.
Seas: 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the afternoon.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 5 metres offshore.

Forecast for Thursday, 6 August
Weather: Clear.
Winds: Variable about 10 knots.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Friday, 7 August
Weather: Sunny.
Winds: South to southeasterly 10 to 15 knots tending northeast to southeasterly in the middle of the day then becoming variable about 10 knots in the late afternoon.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Saturday, 8 August
Weather: Sunny.
Winds: Variable about 10 knots.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Sunday, 9 August
Weather: Sunny.
Winds: West to southwesterly about 10 knots tending west to northwesterly 10 to 15 knots during the afternoon then decreasing to about 10 knots during the evening.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.

Forecast for Thursday, 6 August
Weather: Cloudy. 70% chance of showers.
Winds: Westerly 15 to 20 knots.
Seas: 1 to 1.5 metres.
Swell: Southwesterly 4 metres.
Forecast for Friday, 7 August
Weather: Partly cloudy. 95% chance of showers. The chance of a thunderstorm in the morning.
Winds: Southwesterly 10 to 15 knots turning westerly 20 to 30 knots during the afternoon and evening.
Seas: Around 1 metre, increasing to 1 to 2 metres during the afternoon.
Swell: Southwesterly 4 metres.
Forecast for Saturday, 8 August
Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning. Possible small hail in the morning and early afternoon.
Winds: West to southwesterly 25 to 30 knots tending south to southwesterly 20 to 25 knots during the day.
Seas: 2 to 3 metres.
Swell: Southwesterly 4 metres, increasing to 4 to 6 metres during the morning.
Forecast for Sunday, 9 August
Weather: Cloudy. 90% chance of showers.
Winds: Southerly 15 to 20 knots turning west to southwesterly during the morning.
Seas: 1 to 2 metres, decreasing below 1 metre during the morning.
Swell: Southwesterly 5 to 7 metres, decreasing to 4 to 5 metres during the afternoon or evening.

Forecast for Thursday, 6 August
Weather: Clear.
Winds: West to northwesterly about 10 knots.
Seas: Below 0.5 metres.
Swell: Westerly below 1 metre.
Forecast for Friday, 7 August
Weather: Sunny.
Winds: West to southwesterly about 10 knots increasing to 10 to 15 knots in the middle of the day.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Saturday, 8 August
Weather: Mostly sunny.
Winds: West to southwesterly 15 to 20 knots tending south to southwesterly in the evening.
Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore west of Port Hedland during the afternoon.
Swell: Westerly below 1 metre.
Forecast for Sunday, 9 August
Weather: Mostly sunny.
Winds: Southerly 15 to 20 knots turning east to southeasterly 20 to 30 knots during the morning.
Seas: 1 to 2 metres, decreasing below 1 metre during the afternoon or evening.
Swell: Westerly around 1 metre.

Forecast for Thursday, 6 August
Weather: Partly cloudy.
Winds: West to southwesterly about 10 knots.
Seas: Below 0.5 metres.
Swell: West to southwesterly around 1 metre inshore, increasing to 1.5 to 2.5 metres offshore west of Barrow Island.
Forecast for Friday, 7 August
Weather: Partly cloudy.
Winds: South to southwesterly about 10 knots tending west to southwesterly 10 to 15 knots in the early afternoon then tending south to southwesterly in the evening.
Seas: Below 1 metre.
Swell: West to southwesterly around 1 metre inshore, increasing to 1.5 to 2.5 metres offshore west of Barrow Island.
Forecast for Saturday, 8 August
Weather: Partly cloudy.
Winds: Southerly 15 to 20 knots increasing to 20 to 25 knots in the late evening.
Seas: Around 1 metre, increasing to 1 to 1.5 metres around midday.
Swell: West to southwesterly below 1 metre inshore, increasing to 1 to 2 metres offshore.
Forecast for Sunday, 9 August
Weather: Sunny.
Winds: South to southeasterly 15 to 25 knots becoming variable about 10 knots during the afternoon then becoming south to southwesterly 15 to 20 knots during the evening.
Seas: 1 to 2 metres, decreasing to 1 metre during the afternoon.
Swell: West to southwesterly 1 to 1.5 metres inshore, increasing to 2 to 3 metres about offshore western waters.

Forecast for Thursday, 6 August
Weather: Clear.
Winds: West to southwesterly about 10 knots.
Seas: Below 0.5 metres.
Swell: Westerly below 1 metre.
Forecast for Friday, 7 August
Weather: Sunny.
Winds: Variable about 10 knots becoming west to southwesterly 10 to 15 knots in the evening then decreasing to about 10 knots in the late evening.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Saturday, 8 August
Weather: Sunny.
Winds: Variable about 10 knots becoming west to southwesterly 10 to 15 knots in the early afternoon.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Sunday, 9 August
Weather: Mostly sunny.
Winds: Southwesterly 15 to 20 knots turning south to southeasterly during the morning.
Seas: Below 1 metre, increasing to 1 to 2 metres offshore south of Broome during the morning.
Swell: Westerly below 1 metre.
Wongan Hills
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