BoM Johnstons Bay Marine Weather Forecast

Mean Sea Level Prognosis Charts

Mean Sea Level Prognosis Charts

Other NSW Coastal Waters Forecasts

Forecast for Tuesday, 29 September
Weather: Sunny.
Winds: North to northeasterly 15 to 20 knots increasing to 15 to 25 knots in the early afternoon.
Seas: Around 1 metre, increasing to 1 to 2 metres during the afternoon.
Swell: Southerly 1.5 metres.
Forecast for Wednesday, 30 September
Weather: Sunny.
Winds: Northerly 15 to 20 knots, reaching up to 30 knots offshore during the morning.
Seas: 1.5 to 2 metres.
Swell: Southerly 1 to 1.5 metres, decreasing to around 1 metre by early evening.
Forecast for Thursday, 1 October
Weather: Mostly sunny.
Winds: Northerly 15 to 20 knots.
Seas: 1 to 1.5 metres.
Swell: Northeasterly 1 to 1.5 metres, decreasing to around 1 metre during the afternoon or evening. Southerly around 1 metre.

Forecast for Tuesday, 29 September
Weather: Mostly sunny.
Winds: Southeasterly 10 to 15 knots, reaching up to 20 knots offshore north of Cape Byron in the late morning. Winds decreasing to about 10 knots in the late evening.
Seas: 1 to 1.5 metres, decreasing below 1 metre during the afternoon.
Swell: Southerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore south of Yamba around midday. Easterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore south of Cape Byron.
Forecast for Wednesday, 30 September
Weather: Partly cloudy.
Winds: East to southeasterly 10 to 15 knots becoming variable about 10 knots in the early morning then becoming northeasterly 10 to 15 knots in the late afternoon.
Seas: Below 1 metre.
Swell: Southerly 1 to 1.5 metres, decreasing to around 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon. Easterly around 1 metre.
Forecast for Thursday, 1 October
Weather: Partly cloudy.
Winds: Variable about 10 knots becoming northeasterly 15 to 20 knots during the day.
Seas: Below 1 metre, increasing to 1 to 1.5 metres south of Cape Byron during the afternoon or evening.
Swell: South to southeasterly 1 to 1.5 metres, decreasing to around 1 metre during the afternoon.

Forecast for Tuesday, 29 September
Weather: Partly cloudy.
Winds: East to southeasterly 10 to 15 knots becoming east to northeasterly below 10 knots in the evening.
Seas: Below 1 metre.
Swell: Southerly 1 to 1.5 metres. East to northeasterly around 1 metre.
Forecast for Wednesday, 30 September
Weather: Mostly sunny.
Winds: Variable about 10 knots becoming north to northeasterly 15 to 20 knots in the middle of the day.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon.
Swell: Southerly 1 to 1.5 metres.
Forecast for Thursday, 1 October
Weather: Mostly sunny.
Winds: Northerly 15 to 25 knots.
Seas: 1 to 1.5 metres, increasing to 1 to 2 metres during the afternoon.
Swell: South to southeasterly 1 to 1.5 metres, decreasing to around 1 metre during the afternoon.

Forecast for Tuesday, 29 September
Weather: Sunny.
Winds: Northerly 15 to 25 knots.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon.
Swell: Southerly 1.5 metres, increasing to 1.5 to 2 metres south of Merimbula.
Forecast for Wednesday, 30 September
Weather: Mostly sunny.
Winds: Northerly 15 to 20 knots, reaching up to 30 knots offshore early in the morning.
Seas: 1 to 2 metres, decreasing to 1 to 1.5 metres by early evening.
Swell: Southerly 1.5 to 2 metres, decreasing to 1 to 1.5 metres around midday. North to northeasterly around 1 metre.
Forecast for Thursday, 1 October
Weather: Partly cloudy.
Winds: Northerly 15 to 20 knots.
Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon or evening.
Swell: Southerly 1 to 1.5 metres, decreasing to around 1 metre during the morning. Northeasterly 1 to 1.5 metres.

Forecast for Tuesday, 29 September
Weather: Partly cloudy.
Winds: Northeasterly about 10 knots increasing to 10 to 15 knots in the early afternoon.
Seas: Below 1 metre.
Swell: Southerly 1.5 to 2 metres.
Forecast for Wednesday, 30 September
Weather: Sunny.
Winds: Northerly 15 to 25 knots, reaching up to 30 knots offshore south of Norah Head in the late evening.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon.
Swell: Southerly 1.5 to 2 metres, decreasing to 1.5 metres later in the evening.
Forecast for Thursday, 1 October
Weather: Sunny.
Winds: Northerly 20 to 30 knots.
Seas: 1.5 to 2.5 metres.
Swell: Southerly 1 to 1.5 metres, decreasing to around 1 metre during the evening.

Forecast for Tuesday, 29 September
Weather: Mostly sunny.
Winds: North to northeasterly about 10 knots increasing to 15 to 20 knots in the middle of the day. Winds reaching up to 25 knots offshore south of Point Perpendicular in the evening.
Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon, increasing to 1 to 2 metres south of Point Perpendicular by early evening.
Swell: Southerly 1 to 1.5 metres.
Forecast for Wednesday, 30 September
Weather: Sunny.
Winds: Northerly 15 to 25 knots, reaching up to 30 knots offshore north of Port Kembla in the evening.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres offshore.
Swell: Southerly 1 to 1.5 metres.
Forecast for Thursday, 1 October
Weather: Sunny.
Winds: Northerly 15 to 25 knots.
Seas: 1 to 2 metres.
Swell: Northeasterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore south of Port Kembla during the morning. Southerly around 1 metre.

Forecast for Tuesday, 29 September
Weather: Mostly sunny.
Winds: East to northeasterly about 10 knots.
Seas: Below 1 metre.
Swell: Southerly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore south of Crowdy Head.
Forecast for Wednesday, 30 September
Weather: Mostly sunny.
Winds: Northerly 15 to 20 knots, reaching up to 25 knots inshore in the afternoon.
Seas: Around 1 metre, increasing to 1 to 2 metres around midday.
Swell: Southerly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore south of Crowdy Head.
Forecast for Thursday, 1 October
Weather: Sunny.
Winds: Northerly 15 to 25 knots.
Seas: 1.5 to 2 metres.
Swell: Southerly 1 to 1.5 metres, decreasing to around 1 metre during the evening.

Forecast for Tuesday, 29 September
Weather: Mostly sunny.
Winds: Northeasterly 15 to 20 knots turning northerly in the late evening.
Seas: Below 0.5 metres, increasing to around 1 metre during the afternoon.
Swell: Southerly 1.5 metres.
Forecast for Wednesday, 30 September
Weather: Sunny.
Winds: Northerly 15 to 20 knots, reaching up to 30 knots offshore in the evening.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon.
Swell: Southerly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Forecast for Thursday, 1 October
Weather: Sunny.
Winds: Northerly 20 to 30 knots.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres offshore.
Swell: Southerly 1 to 1.5 metres, decreasing to around 1 metre during the morning.
Sydney Harbour
▲ N
11 kn NNE
· 18 °C
Warnings
No warnings within 100 km.
State Wide
Temperature
Johnstons Bay
18 °C 10 °C 6am 22 °C 1pm
↑ Warming
Now: 18 °C
Tides
Johnstons Bay
9:42am 1.78m 4:03pm 0.32m
↓ Falling
Current: 1.70m
Weather Now for Johnstons Bay
Mostly sunny.
18 °C
Wind
11 kn NNE
Humidity
44%
Pressure
1032 hPa
At Sydney Harbour
Nearby Wind
50 km radius
N S W E 9 kn Bankstown 7 kn Horsley Park 8 kn Holsworthy 7 kn Richmond
Johnstons Bay
11 kn NNE
Recent Locations
Johnstons Bay
11 kn NNE
18°
Bullioh
2 kn NNE
15°
Sun
5:35am rise 5:56pm set
12 h 20 m of daylight
Now: 10:39am
125 seconds more than yesterday
Moon
8:42pmrise 6:33amset
94% illuminated
Waning Gibbous
Live Weather
Nearby
Sydney Harbour, NSW
11 kn NNE
18°
Sydney - Observatory Hill, NSW
10 kn ENE
20°
Fort Denison, NSW
10 kn ENE
Canterbury, NSW
6 kn NNE
19°
Sydney Airport, NSW
11 kn NNE
20°
North Head, NSW
5 kn NNE
Sydney Olympic Park, NSW
4 kn NE
19°
Little Bay, NSW
6 kn NNE
Windiest in Australia
Cape Grim, TAS
24 kn ENE
13°
Most Windless in Australia
Busselton Jetty, WA
Calm
Hottest in Australia
Mcarthur River Mine Airport, NT
5 kn E
33°
Coldest in Australia
Mount Read, TAS
21 kn N
6°
Wettest in Australia
Mount Keith, WA
18.8 mm