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BoM Grass Patch Marine Weather Forecast

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Mean Sea Level Prognosis Charts

Other WA Coastal Waters Forecasts

Forecast for Wednesday, 29 July
Weather: Partly cloudy.
Winds: North to northeasterly below 10 knots increasing to 10 to 15 knots in the evening.
Seas: Below 0.5 metres.
Swell: Southwesterly 2 to 3 metres. South to southeasterly 1 to 1.5 metres.
Forecast for Thursday, 30 July
Weather: Mostly sunny.
Winds: Northerly 10 to 15 knots turning northwesterly in the late morning.
Seas: Below 1 metre.
Swell: Southwesterly 2 to 2.5 metres. Southeasterly 1 to 1.5 metres, decreasing to around 1 metre during the morning.
Forecast for Friday, 31 July
Weather: Becoming cloudy. 95% chance of showers. The chance of a thunderstorm in the afternoon and early evening.
Winds: Northwesterly 15 to 25 knots turning west to southwesterly 20 to 25 knots in the late afternoon.
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 to 3 metres, increasing to 3 to 4 metres during the afternoon.
Forecast for Saturday, 1 August
Weather: Partly cloudy. 70% chance of showers.
Winds: Southwesterly 15 to 25 knots turning southerly 10 to 15 knots during the afternoon.
Seas: 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the afternoon.
Swell: Southwesterly 3 to 4 metres, increasing to 4 to 6 metres during the morning.

Forecast for Wednesday, 29 July
Weather: Partly cloudy.
Winds: East to northeasterly 10 to 15 knots decreasing to about 10 knots in the early afternoon.
Seas: Below 1 metre.
Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore.
Forecast for Thursday, 30 July
Weather: Partly cloudy.
Winds: North to northeasterly 10 to 15 knots turning west to northwesterly below 10 knots in the late morning.
Seas: Below 1 metre.
Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Forecast for Friday, 31 July
Weather: Partly cloudy. 95% chance of showers. The chance of a thunderstorm in the afternoon.
Winds: Northwesterly 15 to 20 knots turning southwesterly in the late afternoon.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: Southwesterly 1.5 to 2.5 metres inshore, increasing to 2 to 4 metres offshore around midday.
Forecast for Saturday, 1 August
Weather: Cloudy.
Winds: Southerly 15 to 20 knots turning east to southeasterly below 10 knots during the afternoon.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 5 metres offshore.

Forecast for Wednesday, 29 July
Weather: Partly cloudy.
Winds: Variable about 10 knots becoming northeasterly 10 to 15 knots in the evening.
Seas: Below 1 metre.
Swell: Southwesterly 2 to 3 metres. Southerly 1 to 1.5 metres, increasing to 1 to 2 metres east of Esperance.
Forecast for Thursday, 30 July
Weather: Partly cloudy.
Winds: Northerly 15 to 20 knots.
Seas: Around 1 metre.
Swell: Southwesterly 2 to 2.5 metres. Southerly 1 to 1.5 metres, tending southeasterly around 1 metre during the morning.
Forecast for Friday, 31 July
Weather: Mostly sunny. 70% chance of showers west of Hopetoun in the late afternoon and evening. Near zero chance of rain elsewhere. The chance of a thunderstorm west of Hopetoun in the afternoon and early evening.
Winds: North to northwesterly 15 to 20 knots.
Seas: 1 to 1.5 metres, decreasing below 1 metre during the afternoon.
Swell: Southwesterly 2 to 3 metres, increasing to 2 to 4 metres west of Hopetoun around midday.
Forecast for Saturday, 1 August
Weather: Partly cloudy. 90% chance of showers.
Winds: Southwesterly 15 to 25 knots.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres during the morning.
Swell: Southwesterly 3 to 5 metres.

Forecast for Wednesday, 29 July
Weather: Cloudy.
Winds: Variable about 10 knots becoming east to northeasterly 10 to 15 knots in the late afternoon.
Seas: Below 1 metre.
Swell: South to southwesterly 2 to 3 metres, increasing to 3 to 4 metres east of Eyre. Southerly 1 to 2 metres.
Forecast for Thursday, 30 July
Weather: Partly cloudy.
Winds: North to northeasterly 10 to 15 knots, reaching up to 20 knots west of Eyre in the evening.
Seas: Around 1 metre.
Swell: Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres east of Eyre. Southerly 1 to 2 metres, tending southeasterly below 1 metre during the morning.
Forecast for Friday, 31 July
Weather: Sunny.
Winds: North to northeasterly 15 to 20 knots.
Seas: 1 to 1.5 metres, decreasing to 1 metre around midday.
Swell: Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the morning, then increasing to 1.5 to 2 metres around midday.
Forecast for Saturday, 1 August
Weather: Partly cloudy.
Winds: Northerly 15 to 20 knots shifting southwesterly during the morning.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres west of Eyre during the afternoon.
Swell: Southwesterly 1.5 to 2.5 metres.

Forecast for Wednesday, 29 July
Weather: Sunny.
Winds: Northeasterly 10 to 15 knots becoming variable about 10 knots in the early afternoon.
Seas: Around 1 metre, decreasing below 0.5 metres by early evening.
Swell: Southwesterly 1.5 to 2.5 metres.
Forecast for Thursday, 30 July
Weather: Sunny.
Winds: Variable about 10 knots.
Seas: Below 1 metre.
Swell: Southwesterly 1.5 to 2 metres.
Forecast for Friday, 31 July
Weather: Sunny.
Winds: Southeast to southwesterly about 10 knots increasing to 10 to 15 knots in the evening.
Seas: Below 1 metre.
Swell: Southwesterly 1.5 to 2.5 metres.
Forecast for Saturday, 1 August
Weather: Mostly sunny.
Winds: Southerly 10 to 15 knots turning southeasterly 15 to 20 knots during the morning.
Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore south of Denham during the evening.
Swell: Southwesterly 2 to 3 metres.

Forecast for Wednesday, 29 July
Weather: Sunny.
Winds: Northeasterly 10 to 15 knots becoming variable about 10 knots in the late afternoon.
Seas: Below 1 metre.
Swell: Southwesterly 1.5 to 2.5 metres.
Forecast for Thursday, 30 July
Weather: Sunny.
Winds: Northeast to southeasterly 10 to 15 knots tending north to northeasterly in the early morning then becoming variable below 10 knots in the early afternoon.
Seas: Below 1 metre.
Swell: Southwesterly 1.5 to 2 metres.
Forecast for Friday, 31 July
Weather: Sunny.
Winds: Variable below 10 knots becoming southwesterly 10 to 15 knots in the late afternoon.
Seas: Below 1 metre.
Swell: Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres during the morning.
Forecast for Saturday, 1 August
Weather: Partly cloudy. 50% chance of showers.
Winds: Southerly 10 to 15 knots turning southeasterly 15 to 20 knots during the morning.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore south of Geraldton.

Forecast for Wednesday, 29 July
Weather: Sunny.
Winds: East to northeasterly about 10 knots.
Seas: Below 1 metre.
Swell: Southwesterly 2 to 2.5 metres.
Forecast for Thursday, 30 July
Weather: Mostly sunny.
Winds: Northeasterly 10 to 15 knots tending northerly in the morning then becoming variable below 10 knots in the early afternoon.
Seas: Below 1 metre.
Swell: Southwesterly 2 metres.
Forecast for Friday, 31 July
Weather: Sunny.
Winds: Variable below 10 knots becoming west to northwesterly 10 to 15 knots in the middle of the day then turning southwesterly in the evening.
Seas: Below 1 metre.
Swell: Southwesterly 2 metres, increasing to 2 to 3 metres during the morning.
Forecast for Saturday, 1 August
Weather: Cloudy. 60% chance of showers.
Winds: South to southwesterly 15 to 20 knots tending south to southeasterly during the morning then tending east to southeasterly 10 to 15 knots during the evening.
Seas: 1 to 1.5 metres.
Swell: Southwesterly 3 metres, increasing to 3 to 4 metres during the morning.

Forecast for Wednesday, 29 July
Weather: Partly cloudy.
Winds: North to northeasterly about 10 knots.
Seas: Below 1 metre.
Swell: Southwesterly 2 to 2.5 metres. Southerly 1 to 1.5 metres east of Cape Leeuwin, decreasing to around 1 metre during the afternoon.
Forecast for Thursday, 30 July
Weather: Partly cloudy.
Winds: Northerly 10 to 15 knots turning northwesterly during the morning.
Seas: Below 1 metre.
Swell: Southwesterly 2 to 2.5 metres. Southeasterly around 1 metre east of Cape Leeuwin.
Forecast for Friday, 31 July
Weather: Cloudy. Near 100% chance of showers. The chance of a thunderstorm in the morning and afternoon.
Winds: Northwesterly 15 to 25 knots turning southwesterly 20 to 25 knots in the late afternoon.
Seas: Around 1 metre, increasing to 1 to 2 metres during the morning.
Swell: Southwesterly 2 to 3 metres, increasing to 3 to 4 metres around midday.
Forecast for Saturday, 1 August
Weather: Cloudy.
Winds: South to southwesterly 15 to 25 knots tending south to southeasterly below 10 knots during the day.
Seas: 1 to 2 metres, decreasing below 1 metre during the afternoon.
Swell: Southwesterly 4 metres, increasing to 4 to 6 metres during the morning.

Forecast for Wednesday, 29 July
Weather: Sunny.
Winds: East to northeasterly 10 to 15 knots tending northwest to northeasterly in the evening then becoming variable about 10 knots in the late evening.
Seas: Below 0.5 metres, increasing to around 1 metre north of Coral Bay.
Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Forecast for Thursday, 30 July
Weather: Sunny.
Winds: Variable about 10 knots becoming northeast to southeasterly 10 to 15 knots in the morning then becoming variable about 10 knots in the early afternoon.
Seas: Below 1 metre.
Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Forecast for Friday, 31 July
Weather: Sunny.
Winds: South to southeasterly below 10 knots increasing to 10 to 15 knots in the morning.
Seas: Below 1 metre.
Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Forecast for Saturday, 1 August
Weather: Sunny.
Winds: South to southeasterly 10 to 15 knots.
Seas: Around 1 metre.
Swell: Southwesterly 1.5 to 2.5 metres.

Forecast for Wednesday, 29 July
Weather: Sunny.
Winds: Northeast 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 Thursday, 30 July
Weather: Sunny.
Winds: East to southeasterly 15 to 20 knots.
Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: East to northeasterly below 1 metre.
Forecast for Friday, 31 July
Weather: Sunny.
Winds: East to southeasterly 15 to 20 knots.
Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: East to northeasterly below 1 metre.
Forecast for Saturday, 1 August
Weather: Sunny.
Winds: Southeasterly 15 to 20 knots tending northeast to southeasterly during the morning.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: Northeasterly below 1 metre.

Forecast for Wednesday, 29 July
Weather: Sunny.
Winds: Northeasterly 10 to 15 knots decreasing to about 10 knots in the early afternoon.
Seas: Below 1 metre.
Swell: Southwesterly 2 to 2.5 metres.
Forecast for Thursday, 30 July
Weather: Mostly sunny.
Winds: North to northeasterly 10 to 15 knots tending north to northwesterly in the middle of the day then becoming variable below 10 knots in the early afternoon.
Seas: Below 1 metre.
Swell: Southwesterly 1.5 to 2 metres.
Forecast for Friday, 31 July
Weather: Mostly sunny. 70% chance of showers.
Winds: North to northwesterly 10 to 15 knots shifting southwesterly 15 to 20 knots in the evening.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon.
Swell: Southwesterly 2 metres, increasing to 2 to 3 metres during the morning.
Forecast for Saturday, 1 August
Weather: Cloudy. 50% chance of showers.
Winds: Southerly 15 to 20 knots turning east to southeasterly 10 to 15 knots during the day.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon.
Swell: Southwesterly 3 metres, increasing to 3 to 5 metres during the morning.

Forecast for Wednesday, 29 July
Weather: Sunny.
Winds: East to northeasterly 15 to 20 knots tending east to southeasterly 10 to 15 knots in the late evening.
Seas: 1 to 2 metres, decreasing to 1 metre by early evening.
Swell: East to northeasterly around 1 metre offshore west of Port Hedland.
Forecast for Thursday, 30 July
Weather: Sunny.
Winds: East to southeasterly 15 to 20 knots tending east to northeasterly below 10 knots during the day. Winds reaching up to 25 knots offshore west of Port Hedland in the late morning.
Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre by early evening.
Swell: East to northeasterly around 1 metre.
Forecast for Friday, 31 July
Weather: Sunny.
Winds: East to southeasterly 15 to 20 knots tending east to northeasterly 10 to 15 knots in the early afternoon then becoming variable below 10 knots in the evening.
Seas: Below 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.
Forecast for Saturday, 1 August
Weather: Sunny.
Winds: Southeasterly 15 to 20 knots turning east to northeasterly below 10 knots during the day.
Seas: Below 0.5 metres, increasing to around 1 metre during the morning.
Swell: North to northeasterly below 1 metre.

Forecast for Wednesday, 29 July
Weather: Sunny.
Winds: East to northeasterly 15 to 20 knots.
Seas: 1 to 1.5 metres.
Swell: West to southwesterly around 1 metre offshore.
Forecast for Thursday, 30 July
Weather: Sunny.
Winds: East to northeasterly 10 to 15 knots tending east to southeasterly before dawn then tending east to northeasterly in the middle of the day. Winds reaching up to 20 knots offshore east of Barrow Island during the morning and early afternoon.
Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore east of Barrow Island during the morning.
Swell: West to southwesterly around 1 metre offshore.
Forecast for Friday, 31 July
Weather: Sunny.
Winds: Variable below 10 knots becoming east to southeasterly 10 to 15 knots before dawn then tending east to northeasterly in the early afternoon.
Seas: Below 1 metre.
Swell: West to southwesterly around 1 metre offshore.
Forecast for Saturday, 1 August
Weather: Sunny.
Winds: Southerly 10 to 15 knots turning east to southeasterly during the morning then becoming variable about 10 knots during the afternoon.
Seas: Below 1 metre.
Swell: West to southwesterly around 1 metre inshore, increasing to 1 to 2 metres about offshore western waters.

Forecast for Wednesday, 29 July
Weather: Sunny.
Winds: Variable about 10 knots, reaching up to 20 knots offshore in the early afternoon.
Seas: 1 to 1.5 metres, decreasing below 1 metre during the afternoon.
Swell: Westerly below 1 metre.
Forecast for Thursday, 30 July
Weather: Sunny.
Winds: Southeasterly 10 to 15 knots, reaching up to 20 knots offshore south of Cape Leveque during the morning and early afternoon. Winds tending easterly in the morning then becoming variable about 10 knots in the early afternoon.
Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre during the afternoon.
Swell: Westerly below 1 metre.
Forecast for Friday, 31 July
Weather: Sunny.
Winds: Southeasterly 10 to 15 knots tending easterly in the morning then becoming variable about 10 knots in the middle of the day.
Seas: Around 1 metre, decreasing below 0.5 metres during the afternoon.
Swell: North to northeasterly below 1 metre.
Forecast for Saturday, 1 August
Weather: Mostly sunny.
Winds: East to southeasterly 10 to 15 knots becoming variable about 10 knots during the day.
Seas: Below 1 metre.
Swell: North to northeasterly below 1 metre.
Salmon Gums Res.Stn.
▲ N
3 kn NE
· 14 °C
Warnings
No warnings within 100 km.
State Wide
View all WA warnings
Temperature
Grass Patch
14 °C 16 °C 1pm 3 °C 4am
↓ Cooling
Now: 14 °C
Weather Now for Grass Patch
14 °C
Feels like 12 °C
Wind
3 kn NE
Humidity
44%
At Salmon Gums Res.Stn.
Nearby Wind
50 km radius
N S W E 3 kn Salmon Gums Res.Stn.
Grass Patch
3 kn NE
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