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BoM Grimwade Marine Weather Forecast

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Forecast for Thursday, 17 September
Weather: Partly cloudy.
Winds: West to southwesterly about 10 knots.
Seas: Below 1 metre.
Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 2 metres offshore. Easterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Forecast for Friday, 18 September
Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the late afternoon and evening.
Winds: Variable about 10 knots becoming northeasterly 10 to 15 knots in the middle of the day then turning northwesterly in the evening. Winds reaching up to 20 knots offshore west of Albany in the evening.
Seas: Around 1 metre.
Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore. Easterly around 1 metre.
Forecast for Saturday, 19 September
Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning.
Winds: Northwesterly 20 to 30 knots turning westerly 25 to 35 knots during the morning and early afternoon.
Seas: 1 to 1.5 metres, increasing to 2 to 3 metres during the morning.
Swell: West to southwesterly 1.5 to 2.5 metres, increasing to 3 to 5 metres during the morning, then tending westerly 4 to 6 metres around midday.
Forecast for Sunday, 20 September
Weather: Cloudy.
Winds: Southwesterly 15 to 25 knots tending southeast to southwesterly 15 to 20 knots during the morning then tending northeast to southeasterly 10 to 15 knots during the afternoon.
Seas: 1.5 to 2.5 metres, decreasing below 1 metre during the morning.
Swell: Westerly 2.5 to 4 metres, tending southwesterly 2.5 to 4 metres during the morning.

Forecast for Thursday, 17 September
Weather: Partly cloudy.
Winds: North to northwesterly 10 to 15 knots.
Seas: Below 1 metre.
Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Forecast for Friday, 18 September
Weather: Becoming cloudy. 95% chance of showers. The chance of a thunderstorm in the late afternoon and evening.
Winds: Northerly 15 to 20 knots tending northwesterly 15 to 25 knots in the early afternoon then increasing to 20 to 30 knots in the evening. Winds reaching up to 35 knots in the late evening.
Seas: Around 1 metre, increasing to 1 to 2 metres during the morning.
Swell: Southwesterly 1.5 to 2 metres, tending westerly 1.5 to 2.5 metres during the morning.
Forecast for Saturday, 19 September
Weather: Partly cloudy. 90% chance of showers.
Winds: Northwesterly 25 to 35 knots tending westerly 25 to 30 knots before dawn then decreasing to 15 to 25 knots in the middle of the day.
Seas: 2 to 3 metres, decreasing to 1 to 1.5 metres during the afternoon.
Swell: Westerly 2 to 3 metres, increasing to 3 to 5 metres during the morning, then tending west to southwesterly 3 to 4 metres by early evening.
Forecast for Sunday, 20 September
Weather: Cloudy.
Winds: Southwesterly 10 to 15 knots turning south to southeasterly below 10 knots during the morning then becoming variable during the afternoon.
Seas: Around 1 metre, decreasing below 0.5 metres during the afternoon.
Swell: West to southwesterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore.

Forecast for Thursday, 17 September
Weather: Mostly clear.
Winds: Northwest to northeasterly about 10 knots, reaching up to 25 knots east of Hopetoun.
Seas: Below 1 metre, increasing to 1 to 2 metres east of Esperance.
Swell: Southwesterly 1.5 metres, increasing to 1.5 to 2 metres east of Esperance.
Forecast for Friday, 18 September
Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the late afternoon and evening.
Winds: Northwest to northeasterly 15 to 20 knots tending southeast to southwesterly 10 to 15 knots in the morning then tending northeast to southeasterly 15 to 20 knots in the middle of the day. Winds reaching up to 30 knots west of Hopetoun in the late evening.
Seas: 1 to 2 metres, decreasing to 1 metre during the morning.
Swell: Southwesterly 1.5 metres, increasing to 1 to 2 metres west of Hopetoun. Easterly around 1 metre.
Forecast for Saturday, 19 September
Weather: Partly cloudy. 90% chance of showers. The chance of a thunderstorm west of Hopetoun in the early morning.
Winds: Northwest to northeasterly 15 to 20 knots tending west to northwesterly 15 to 25 knots before dawn then becoming westerly 20 to 30 knots in the morning.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
Swell: Southwesterly 1 to 1.5 metres, increasing to 2 to 4 metres around midday.
Forecast for Sunday, 20 September
Weather: Cloudy. 50% chance of showers.
Winds: West to southwesterly 15 to 25 knots shifting east to southeasterly 10 to 15 knots during the afternoon.
Seas: 1.5 to 2.5 metres, decreasing to 1 metre during the afternoon.
Swell: Southwesterly 2 to 4 metres.

Forecast for Thursday, 17 September
Weather: Clear.
Winds: Northeasterly 15 to 20 knots.
Seas: 1 to 1.5 metres.
Swell: Southwesterly 1.5 metres, increasing to 1.5 to 2 metres east of Eyre.
Forecast for Friday, 18 September
Weather: Sunny.
Winds: Northerly 15 to 20 knots.
Seas: 1 to 1.5 metres, decreasing to 1 metre around midday, increasing to 1 to 1.5 metres west of Eyre during the afternoon.
Swell: Southwesterly 1 to 1.5 metres.
Forecast for Saturday, 19 September
Weather: Sunny morning. The chance of a thunderstorm west of Eyre in the afternoon.
Winds: Northerly 15 to 20 knots shifting south to southwesterly 15 to 25 knots in the late morning and early afternoon.
Seas: 1 to 1.5 metres, decreasing to 1 metre around midday, then increasing to 1 to 1.5 metres by early evening.
Swell: Southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon.
Forecast for Sunday, 20 September
Weather: Partly cloudy.
Winds: Southwesterly 15 to 25 knots turning southeasterly 10 to 15 knots during the afternoon.
Seas: 1 to 2 metres, decreasing to 1 metre during the morning.
Swell: Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.

Forecast for Thursday, 17 September
Weather: Mostly clear.
Winds: Variable below 10 knots.
Seas: Below 0.5 metres.
Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Forecast for Friday, 18 September
Weather: Partly cloudy.
Winds: North to northwesterly 10 to 15 knots shifting southwesterly 15 to 20 knots in the late morning and early afternoon.
Seas: Below 1 metre, increasing to 1 to 1.5 metres around midday.
Swell: Southwesterly 1.5 to 2.5 metres.
Forecast for Saturday, 19 September
Weather: Mostly sunny.
Winds: Southerly 15 to 20 knots.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore south of Denham during the morning.
Forecast for Sunday, 20 September
Weather: Partly cloudy.
Winds: South to southeasterly 15 to 20 knots.
Seas: Around 1 metre.
Swell: Southwesterly 2 to 3 metres.

Forecast for Thursday, 17 September
Weather: Partly cloudy.
Winds: Variable below 10 knots.
Seas: Below 0.5 metres.
Swell: Southwesterly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore south of Geraldton.
Forecast for Friday, 18 September
Weather: Partly cloudy. 60% chance of showers.
Winds: Northerly 10 to 15 knots turning westerly 15 to 20 knots in the early afternoon. Winds reaching up to 25 knots offshore south of Geraldton in the late evening.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: Southwesterly 1.5 to 2.5 metres.
Forecast for Saturday, 19 September
Weather: Partly cloudy.
Winds: Westerly 15 to 25 knots turning south to southwesterly 10 to 15 knots during the day.
Seas: 1 to 2 metres, decreasing to 1 metre during the morning.
Swell: West to southwesterly 2 to 3 metres, increasing to 3 to 4 metres during the morning, then tending southwesterly 3 to 4 metres around midday.
Forecast for Sunday, 20 September
Weather: Partly cloudy.
Winds: Variable about 10 knots becoming southerly 10 to 15 knots during the afternoon.
Seas: Below 1 metre.
Swell: Southwesterly 2 to 3 metres, increasing to 2.5 to 4 metres south of Geraldton.

Forecast for Thursday, 17 September
Weather: Partly cloudy.
Winds: North to northwesterly 10 to 15 knots.
Seas: Below 1 metre.
Swell: Southwesterly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Forecast for Friday, 18 September
Weather: Cloudy. 90% chance of showers.
Winds: Northerly 15 to 20 knots turning west to northwesterly 15 to 25 knots in the early afternoon. Winds reaching up to 30 knots in the late evening.
Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: Southwesterly 1.5 to 2.5 metres, tending westerly 2 to 2.5 metres by early evening.
Forecast for Saturday, 19 September
Weather: Partly cloudy. 50% chance of showers in the morning.
Winds: Westerly 20 to 30 knots decreasing to 15 to 25 knots before dawn then tending southwesterly 10 to 15 knots in the evening.
Seas: 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, then decreasing to 1 metre during the afternoon.
Swell: Westerly 2.5 to 3 metres, increasing to 3 to 4 metres during the morning, then tending west to southwesterly 4 metres around midday.
Forecast for Sunday, 20 September
Weather: Partly cloudy.
Winds: Variable about 10 knots becoming southerly 10 to 15 knots during the afternoon.
Seas: Below 1 metre.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore.

Forecast for Thursday, 17 September
Weather: Partly cloudy.
Winds: Northwesterly 10 to 15 knots.
Seas: Around 1 metre.
Swell: Southwesterly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore. East to southeasterly around 1 metre offshore.
Forecast for Friday, 18 September
Weather: Becoming cloudy. 95% chance of showers. The chance of a thunderstorm in the late afternoon and evening.
Winds: Northerly 15 to 25 knots tending northwesterly in the early afternoon then tending north to northwesterly 20 to 30 knots in the evening. Winds reaching up to 35 knots in the late evening.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
Swell: Southwesterly 2 metres, tending westerly 2 to 2.5 metres during the morning, then tending west to southwesterly 2 to 2.5 metres during the afternoon.
Forecast for Saturday, 19 September
Weather: Cloudy. 95% chance of showers. The chance of a thunderstorm east of Cape Leeuwin in the morning.
Winds: West to northwesterly 25 to 35 knots tending west to southwesterly 15 to 25 knots in the afternoon.
Seas: 2 to 4 metres, decreasing below 3 metres during the afternoon.
Swell: Westerly 3 to 5 metres.
Forecast for Sunday, 20 September
Weather: Partly cloudy.
Winds: South to southwesterly 15 to 20 knots turning southeasterly 10 to 15 knots during the morning then tending northeast to southeasterly during the evening.
Seas: 1 to 2 metres, decreasing below 1 metre during the morning.
Swell: Westerly 3 to 4 metres, tending southwesterly 3 to 4 metres during the morning.

Forecast for Thursday, 17 September
Weather: Clear.
Winds: South to southwesterly about 10 knots.
Seas: Below 1 metre.
Swell: Southwesterly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Forecast for Friday, 18 September
Weather: Sunny.
Winds: Variable about 10 knots becoming southwesterly 15 to 20 knots in the early afternoon then tending southerly in the evening. Winds reaching up to 25 knots inshore in the evening.
Seas: Below 0.5 metres, increasing to 1 to 1.5 metres during the afternoon.
Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Forecast for Saturday, 19 September
Weather: Partly cloudy.
Winds: Southerly 15 to 25 knots.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1.5 metres by early evening.
Swell: Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres during the morning.
Forecast for Sunday, 20 September
Weather: Sunny.
Winds: Southerly 15 to 20 knots.
Seas: 1 to 1.5 metres, increasing to 1 to 2 metres offshore south of Coral Bay.
Swell: Southwesterly 2 to 3 metres.

Forecast for Thursday, 17 September
Weather: Clear.
Winds: Northwest to northeasterly 10 to 15 knots becoming variable about 10 knots in the evening.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Friday, 18 September
Weather: Mostly sunny.
Winds: Variable about 10 knots becoming east to northeasterly 10 to 15 knots in the middle of the day.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Saturday, 19 September
Weather: Mostly sunny.
Winds: Variable about 10 knots becoming easterly 10 to 15 knots in the morning then becoming variable about 10 knots in the middle of the day.
Seas: Below 1 metre.
Swell: Northeasterly around 1 metre, increasing to 1 to 1.5 metres east of Kalumburu during the afternoon.
Forecast for Sunday, 20 September
Weather: Mostly sunny.
Winds: Variable about 10 knots.
Seas: Below 0.5 metres.
Swell: Northeasterly around 1 metre.

Forecast for Thursday, 17 September
Weather: Partly cloudy.
Winds: North to northwesterly 10 to 15 knots.
Seas: Below 1 metre.
Swell: Southwesterly 1.5 to 2 metres.
Forecast for Friday, 18 September
Weather: Partly cloudy. 95% chance of showers. The chance of a thunderstorm in the evening.
Winds: Northerly 15 to 20 knots turning west to northwesterly 15 to 25 knots in the early afternoon then becoming northwesterly 25 to 30 knots in the evening.
Seas: Around 1 metre, increasing to 1 to 2 metres during the morning.
Swell: Southwesterly 1.5 to 2.5 metres.
Forecast for Saturday, 19 September
Weather: Partly cloudy. 70% chance of showers.
Winds: Northwesterly 25 to 30 knots tending westerly 20 to 30 knots before dawn then decreasing to 15 to 25 knots in the morning.
Seas: 2 to 3 metres, decreasing to 1 to 2 metres around midday.
Swell: Westerly 2.5 to 3 metres, increasing to 3 to 5 metres during the morning, then tending west to southwesterly 4 metres by early evening.
Forecast for Sunday, 20 September
Weather: Cloudy.
Winds: Southwesterly 10 to 15 knots turning south to southeasterly below 10 knots during the morning.
Seas: Below 1 metre.
Swell: Southwesterly 2.5 to 4 metres.

Forecast for Thursday, 17 September
Weather: Mostly clear.
Winds: Variable about 10 knots.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Friday, 18 September
Weather: Mostly sunny.
Winds: Southeast to southwesterly 10 to 15 knots tending northwest to northeasterly in the middle of the day then becoming variable about 10 knots in the evening.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Saturday, 19 September
Weather: Sunny.
Winds: Variable about 10 knots becoming north to northwesterly 10 to 15 knots in the middle of the day then tending west to northwesterly in the late afternoon.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Sunday, 20 September
Weather: Sunny.
Winds: Southwesterly 10 to 15 knots tending westerly during the day.
Seas: Below 1 metre.
Swell: Westerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.

Forecast for Thursday, 17 September
Weather: Mostly clear.
Winds: Variable about 10 knots.
Seas: Below 0.5 metres, increasing to below 1 metre east of Onslow.
Swell: West to southwesterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Forecast for Friday, 18 September
Weather: Mostly sunny.
Winds: Variable about 10 knots becoming west to northwesterly 10 to 15 knots in the late afternoon then tending west to southwesterly in the late evening.
Seas: Below 1 metre.
Swell: West to southwesterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Forecast for Saturday, 19 September
Weather: Sunny.
Winds: Southerly 10 to 15 knots turning west to southwesterly in the early afternoon.
Seas: Around 1 metre.
Swell: West to southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres around midday.
Forecast for Sunday, 20 September
Weather: Sunny.
Winds: South to southwesterly 15 to 20 knots tending west to southwesterly 10 to 15 knots during the afternoon.
Seas: 1 to 1.5 metres.
Swell: West to southwesterly below 1 metre inshore, increasing to 1.5 to 2.5 metres offshore.

Forecast for Thursday, 17 September
Weather: Clear.
Winds: Variable about 10 knots.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Friday, 18 September
Weather: Mostly sunny.
Winds: Variable about 10 knots, reaching up to 20 knots inshore in the late afternoon.
Seas: Below 1 metre.
Swell: Westerly below 1 metre.
Forecast for Saturday, 19 September
Weather: Mostly sunny.
Winds: Variable about 10 knots.
Seas: Below 0.5 metres, increasing to below 1 metre inshore.
Swell: Westerly below 1 metre.
Forecast for Sunday, 20 September
Weather: Mostly sunny.
Winds: Variable about 10 knots becoming west to southwesterly 10 to 15 knots during the day.
Seas: Below 1 metre.
Swell: Westerly around 1 metre.
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