Australian Government

Bureau of Meteorology


Coastal Waters Forecast 

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IDW11120

Australian Government Bureau of Meteorology
Western Australia

Coastal Waters Forecast for Western Australia
Northern Zones: NT-WA Border to North West Cape

Issued at 4:00 pm WST on Wednesday 12 August 2020
for the period until midnight WST Saturday 15 August 2020.

Please be aware
Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height.

Warning Information

For latest warnings go to www.bom.gov.au, subscribe to RSS feeds, call 1300 659 210* or listen for warnings on relevant TV and radio broadcasts.

Weather Situation

A pattern of light to moderate winds in the morning with moderate to fresh afternoon sea breezes as a high pressure ridge lies over the Gascoyne, before drifting south on Thursday. Winds will become fresh and gusty southeasterly for a period Friday morning as the ridge moves over southern parts of the state.

North Kimberley Coast: WA-NT Border to Kuri Bay

Forecast for Wednesday 12 August until midnight

Winds: Northwest to southwesterly 10 to 15 knots. Seas: Below 1 metre. Swell: Westerly around 1 metre. Weather: Clear.

Forecast for Thursday 13 August

Winds: West to southwesterly 10 to 15 knots tending south to southwesterly early in the morning then tending northwest to southwesterly in the evening. Winds reaching up to 20 knots west of Kalumburu in the evening. Seas: Around 1 metre. Swell: Westerly around 1 metre. Weather: Mostly sunny.

Forecast for Friday 14 August

Winds: Northwest to southwesterly 10 to 15 knots decreasing to about 10 knots early in the morning. Seas: Around 1 metre. Swell: Westerly below 1 metre. Weather: Sunny.

Forecast for Saturday 15 August

Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Westerly below 1 metre. Weather: Sunny.

West Kimberley Coast: Kuri Bay to Wallal

Forecast for Wednesday 12 August until midnight

Winds: West to southwesterly 10 to 15 knots. Seas: Around 1 metre. Swell: Westerly around 1 metre. Weather: Clear.

Forecast for Thursday 13 August

Winds: Southwesterly 10 to 15 knots. Seas: Around 1 metre. Swell: Westerly around 1 metre. Weather: Partly cloudy.

Forecast for Friday 14 August

Winds: South to southwesterly 10 to 15 knots tending south to southeasterly early in the morning then turning west to southwesterly in the early afternoon. Winds reaching 15 to 20 knots offshore south of Broome for a period during the morning. Seas: Around 1 metre. Swell: Westerly below 1 metre. Weather: Sunny.

Forecast for Saturday 15 August

Winds: Variable about 10 knots becoming westerly 10 to 15 knots during the evening. Seas: Below 1 metre. Swell: Westerly below 1 metre. Weather: Sunny.

Pilbara Coast East: Wallal to Cape Preston

Forecast for Wednesday 12 August until midnight

Winds: Westerly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Westerly below 1 metre. Weather: Clear.

Forecast for Thursday 13 August

Winds: Southwesterly 15 to 20 knots turning south to southeasterly 10 to 15 knots early in the morning then becoming variable about 10 knots in the middle of the day. Seas: 1 to 1.5 metres, decreasing below 1 metre during the morning. Swell: Westerly below 1 metre. Weather: Mostly sunny.

Forecast for Friday 14 August

Winds: South to southwesterly 10 to 15 knots turning east to southeasterly 15 to 20 knots early in the morning then becoming variable about 10 knots in the early afternoon. Seas: Below 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. Weather: Sunny.

Forecast for Saturday 15 August

Winds: Variable about 10 knots tending westerly 10 to 15 knots in the afternoon. Seas: Below 1 metre. Swell: Westerly below 1 metre. Weather: Sunny.

Pilbara Coast West: Cape Preston to North West Cape

Forecast for Wednesday 12 August until midnight

Winds: Southwesterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres inshore by early evening. Swell: West to southwesterly around 1 metre inshore, increasing to 1 to 2 metres offshore west of Barrow Island. Weather: Partly cloudy.

Forecast for Thursday 13 August

Winds: South to southeasterly 15 to 20 knots turning west to southwesterly 10 to 15 knots in the early afternoon then tending southerly 15 to 20 knots west of Barrow Island in the late evening. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. Swell: West to southwesterly around 1 metre inshore, increasing to 1 to 2 metres about offshore western waters. Weather: Sunny.

Forecast for Friday 14 August

Winds: Southeasterly 15 to 20 knots turning east to northeasterly during the morning then becoming variable about 10 knots in the late afternoon. Seas: 1 to 1.5 metres, decreasing below 1 metre during the afternoon. Swell: West to southwesterly around 1 metre offshore, increasing to 1 to 1.5 metres around midday. Weather: Sunny.

Forecast for Saturday 15 August

Winds: South to southwesterly 10 to 15 knots tending west to southwesterly during the afternoon. Seas: Below 1 metre. Swell: West to southwesterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore west of Onslow. Weather: Sunny.

The next routine forecast will be issued at 4:00 am WST Thursday.

* Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or public phones. Marine forecasts are also available on VHF and HF radio. View the radio schedule on www.bom.gov.au/marine

Check the latest Coastal Waters Forecasts for information on wind, wave and weather conditions for neighbouring coastal zones