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BoM Williamstown Marine Weather Forecast

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Forecast for Friday, 9 October
Weather: Partly cloudy.
Winds: Westerly 25 to 30 knots.
Seas: 2 to 2.5 metres.
Swell: Southwesterly 2.5 to 3 metres.
Forecast for Saturday, 10 October
Weather: Partly cloudy.
Winds: Westerly 20 to 25 knots, reaching up to 30 knots early in the morning. Winds turning northwesterly 10 to 15 knots in the afternoon.
Seas: 1.5 to 2.5 metres, decreasing to 1 metre by early evening.
Swell: Southwesterly 2.5 to 3 metres, tending westerly 3 to 4 metres during the morning, then tending west to southwesterly 4 to 5 metres by early evening.
Forecast for Sunday, 11 October
Weather: Partly cloudy. The chance of a thunderstorm in the late afternoon and evening.
Winds: North to northeasterly 15 to 20 knots shifting southwesterly 10 to 15 knots in the late afternoon.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre by early evening.
Swell: Southwesterly 4 to 5 metres.
Forecast for Monday, 12 October
Weather: Cloudy.
Winds: Southwesterly 15 to 20 knots.
Seas: 1 to 1.5 metres.
Swell: Southwesterly 4 metres.

Forecast for Friday, 9 October
Weather: Clear.
Winds: Southwesterly 15 to 20 knots.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres offshore.
Swell: Southwesterly 2.5 to 3 metres.
Forecast for Saturday, 10 October
Weather: Sunny.
Winds: Northwest to southwesterly 10 to 15 knots tending north to northwesterly in the early morning then shifting east to southeasterly in the early afternoon. Winds reaching up to 20 knots offshore in the late morning.
Seas: Around 1 metre.
Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore around midday.
Forecast for Sunday, 11 October
Weather: Mostly sunny morning. The chance of a thunderstorm inshore in the afternoon.
Winds: East to northeasterly 10 to 15 knots tending north to northwesterly in the early morning then tending south to southwesterly 15 to 25 knots in the middle of the day.
Seas: Around 1 metre, increasing to 1.5 to 2 metres by early evening.
Swell: Southwesterly 3 to 4 metres, decreasing to 2.5 to 3 metres by early evening.
Forecast for Monday, 12 October
Weather: Cloudy.
Winds: Southerly 15 to 20 knots.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon.
Swell: Southwesterly 2.5 to 3 metres inshore, increasing to 3 to 4 metres offshore.

Forecast for Friday, 9 October
Weather: Partly cloudy.
Winds: Westerly 15 to 20 knots.
Seas: Around 1 metre, increasing to 1 to 1.5 metres south of Port Vincent to Brighton.
Swell: West to southwesterly below 0.5 metres.
Forecast for Saturday, 10 October
Weather: Partly cloudy.
Winds: Westerly 15 to 20 knots becoming variable about 10 knots in the late afternoon.
Seas: 1 to 1.5 metres, decreasing below 1 metre during the afternoon.
Swell: South to southwesterly below 1 metre.
Forecast for Sunday, 11 October
Weather: Becoming cloudy. 70% chance of showers. The chance of a thunderstorm in the afternoon and evening.
Winds: East to northeasterly about 10 knots tending northwest to northeasterly 15 to 20 knots in the early morning then tending west to northwesterly 10 to 15 knots in the evening.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre by early evening.
Swell: South to southwesterly below 1 metre.
Forecast for Monday, 12 October
Weather: Partly cloudy. The chance of a thunderstorm in the morning.
Winds: Southwesterly 15 to 20 knots.
Seas: Around 1 metre.
Swell: South to southwesterly below 1 metre.

Forecast for Friday, 9 October
Weather: Partly cloudy.
Winds: Westerly 20 to 25 knots.
Seas: 1.5 to 2 metres.
Swell: West to southwesterly around 1 metre.
Forecast for Saturday, 10 October
Weather: Partly cloudy.
Winds: Westerly 20 to 25 knots, reaching up to 30 knots early in the morning. Winds turning northwesterly below 10 knots during the day.
Seas: 1 to 2 metres, decreasing to 1 metre by early evening.
Swell: West to southwesterly 1 to 1.5 metres, increasing to 2 to 3 metres during the morning.
Forecast for Sunday, 11 October
Weather: Mostly sunny morning. 50% chance of showers in the afternoon and evening. The chance of a thunderstorm in the late afternoon and evening.
Winds: North to northeasterly 15 to 20 knots shifting west to southwesterly 10 to 15 knots in the late afternoon.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre by early evening.
Swell: West to southwesterly 2 to 3 metres.
Forecast for Monday, 12 October
Weather: Partly cloudy. The chance of a thunderstorm in the morning.
Winds: Southwesterly 15 to 20 knots.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: West to southwesterly 1 to 2 metres.

Forecast for Friday, 9 October
Weather: Partly cloudy.
Winds: Northwesterly 20 to 25 knots.
Seas: 1.5 to 2 metres.
Swell: Southwesterly 2.5 metres.
Forecast for Saturday, 10 October
Weather: Partly cloudy. 50% chance of showers.
Winds: Westerly 20 to 25 knots, reaching up to 30 knots during the morning and early afternoon. Winds turning northwesterly 15 to 25 knots in the early morning.
Seas: 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres by early evening.
Swell: Southwesterly 2.5 to 3 metres, tending westerly 3 to 4 metres around midday.
Forecast for Sunday, 11 October
Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm north of Beachport in the evening.
Winds: North to northwesterly 15 to 25 knots turning westerly 10 to 15 knots in the evening.
Seas: Around 1 metre, increasing to 1 to 2 metres during the morning.
Swell: West to southwesterly 4 to 5 metres.
Forecast for Monday, 12 October
Weather: Partly cloudy.
Winds: Westerly 15 to 20 knots increasing to 20 to 25 knots during the day.
Seas: Around 1 metre, increasing to 1 to 2 metres during the morning.
Swell: Southwesterly 3 to 4 metres.

Forecast for Friday, 9 October
Weather: Partly cloudy.
Winds: Westerly 20 to 25 knots.
Seas: 2 metres.
Swell: Southwesterly 2.5 to 3 metres.
Forecast for Saturday, 10 October
Weather: Partly cloudy.
Winds: Westerly 20 to 25 knots tending northwesterly 15 to 25 knots in the morning then becoming variable about 10 knots in the evening.
Seas: 1 to 2 metres, decreasing to 1 metre by early evening.
Swell: Southwesterly 3 metres, increasing to 3 to 4 metres during the morning.
Forecast for Sunday, 11 October
Weather: Mostly sunny morning. The chance of a thunderstorm in the afternoon and evening.
Winds: Northwest to northeasterly 15 to 20 knots tending westerly 10 to 15 knots in the early afternoon then turning south to southwesterly 15 to 20 knots in the late afternoon.
Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: Southwesterly 3 to 4 metres.
Forecast for Monday, 12 October
Weather: Cloudy.
Winds: South to southwesterly 15 to 20 knots.
Seas: Around 1 metre.
Swell: Southwesterly 3 to 4 metres.

Forecast for Friday, 9 October
Weather: Partly cloudy.
Winds: Westerly 20 to 30 knots.
Seas: 2 to 2.5 metres.
Swell: Southwesterly 2.5 to 3 metres.
Forecast for Saturday, 10 October
Weather: Partly cloudy. 50% chance of showers.
Winds: West to northwesterly 15 to 25 knots, reaching up to 30 knots during the morning. Winds decreasing to 10 to 15 knots in the evening.
Seas: 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the afternoon.
Swell: Southwesterly 2.5 to 3 metres, tending westerly 3 to 5 metres during the morning.
Forecast for Sunday, 11 October
Weather: Partly cloudy. The chance of a thunderstorm in the late afternoon and evening.
Winds: Northwesterly 10 to 15 knots tending northerly 15 to 20 knots before dawn then tending northwest to southwesterly in the early afternoon.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing to 1 metre by early evening.
Swell: Southwesterly 4 to 5 metres.
Forecast for Monday, 12 October
Weather: Cloudy. The chance of a thunderstorm in the morning.
Winds: Southwesterly 15 to 20 knots.
Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: Southwesterly 3 to 4 metres.

Forecast for Friday, 9 October
Weather: Mostly clear.
Winds: Westerly 15 to 20 knots, reaching up to 25 knots south of Cowell to Wallaroo.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres south of Port Neill to Port Victoria.
Swell: South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
Forecast for Saturday, 10 October
Weather: Mostly sunny.
Winds: West to northwesterly 15 to 20 knots, reaching up to 25 knots near the Yorke Peninsula coast early in the morning. Winds becoming variable about 10 knots in the evening.
Seas: 1 to 2 metres, decreasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre during the afternoon.
Swell: South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Cowell to Wallaroo.
Forecast for Sunday, 11 October
Weather: Partly cloudy. 70% chance of showers. The chance of a thunderstorm in the afternoon and evening.
Winds: North to northeasterly 15 to 20 knots shifting west to southwesterly 10 to 15 knots during the afternoon and evening.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing to 1 metre by early evening.
Swell: South to southwesterly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres south of Port Neill to Port Victoria.
Forecast for Monday, 12 October
Weather: Partly cloudy. The chance of a thunderstorm in the morning.
Winds: Southwesterly 15 to 20 knots turning southerly 15 to 25 knots during the day.
Seas: Around 1 metre, increasing to 1 to 2 metres during the morning.
Swell: South to southwesterly around 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.

Forecast for Friday, 9 October
Weather: Partly cloudy.
Winds: Westerly 15 to 20 knots, reaching up to 25 knots offshore.
Seas: 1.5 metres.
Swell: Southwesterly 2.5 metres.
Forecast for Saturday, 10 October
Weather: Partly cloudy.
Winds: Westerly 15 to 20 knots, reaching up to 30 knots south of Salt Creek early in the morning. Winds turning northwesterly in the morning.
Seas: 1 to 2 metres, decreasing to 1 metre by early evening.
Swell: West to southwesterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore during the morning.
Forecast for Sunday, 11 October
Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the late afternoon and evening.
Winds: Northerly 15 to 20 knots turning westerly 10 to 15 knots in the evening.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: Southwesterly 4 to 5 metres.
Forecast for Monday, 12 October
Weather: Partly cloudy. The chance of a thunderstorm in the morning.
Winds: Southwesterly 15 to 20 knots.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning.
Swell: Southwesterly 3 to 4 metres, decreasing to 3 metres during the afternoon.

Forecast for Friday, 9 October
Weather: Partly cloudy.
Winds: Westerly 15 to 20 knots, reaching up to 25 knots south of Streaky Bay.
Seas: 1.5 metres, increasing to 2 metres south of Streaky Bay.
Swell: Southwesterly 2.5 to 3 metres.
Forecast for Saturday, 10 October
Weather: Sunny.
Winds: Westerly 15 to 20 knots shifting east to northeasterly 10 to 15 knots in the afternoon.
Seas: 1 to 2 metres, decreasing below 1 metre during the afternoon.
Swell: Southwesterly 2.5 to 3 metres, increasing to 3 to 4 metres around midday.
Forecast for Sunday, 11 October
Weather: Partly cloudy. The chance of a thunderstorm in the afternoon and evening.
Winds: Northeasterly 10 to 15 knots tending northerly 15 to 20 knots in the early morning then shifting south to southwesterly in the early afternoon.
Seas: Around 1 metre, increasing to 1 to 1.5 metres later in the evening.
Swell: Southwesterly 3 to 4 metres.
Forecast for Monday, 12 October
Weather: Cloudy.
Winds: Southerly 15 to 20 knots.
Seas: 1 to 1.5 metres, decreasing to 1 metre during the afternoon or evening.
Swell: Southwesterly 3 to 4 metres, decreasing to 3 metres during the afternoon or evening.
Mount Crawford
▲ N
15 kn W
· 10 °C
Warnings
No warnings within 100 km.
State Wide
Marine
View all SA warnings
Temperature
Williamstown
10 °C 19 °C 4pm 10 °C 3am
↓ Cooling
Now: 10 °C
Tides
Osborne
12:07am 0.44m 5:52am 2.33m
↑ Rising
Current: 1.33m
Weather Now for Williamstown
Partly cloudy.
10 °C
Feels like 4 °C
Wind
15 kn W
Humidity
97%
Pressure
1006 hPa
At Mount Crawford
Nearby Wind
50 km radius
N S W E 9 kn Roseworthy 13 kn Nuriootpa 11 kn Edinburgh Airport 11 kn Mount Lofty 12 kn Adelaide Airport Mount Barker
Williamstown
15 kn W
Recent Locations
Williamstown
15 kn W
 10°
Sun
6:39am rise 7:24pm set
12 h 44 m of daylight
Now: 2:53am
129 seconds more than yesterday
Moon
6:09amrise 7:15pmset
1% illuminated
New Moon
Live Weather
Nearby
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15 kn W
 10°
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 10°
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 11°
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11 kn WNW
 13°
Parafield Airport, SA
10 kn W
 13°
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19 kn W
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8 kn W
 14°
Windiest in Australia
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42 kn NNW
 8°
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Calm
26°
Hottest in Australia
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10 kn N
 30°
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19 kn W
 6°
Wettest in Australia
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 18.4 mm
More locations...
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