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Weather Forecast

The Dive Victoria Group

Weather Forecast

It is well known that Melbourne can have “4 seasons in one day” but these small changes in weather generally do not effect diving. If it’s forecast rain, it doesn’t matter you’re already planning to get wet! When it’s raining you will often find that the wind dies down and surface conditions improve.

To gain the best idea for the weather forecast we use a variety of resources which area available online. These include:


This gives a local inside the bay forecast from Port Phillip Heads up to the city. It’s a good gauge for wind speed inside the bay.


This is the Central Coastal Forecast for outside Port Phillip Heads. This ranges from Cape Otway across to Wilsons Prom, then Port Phillip Heads down to King Island.


Meteye is a fantastic new interactive map and can be used to zoom in on your location. You can select wind and swell on the left hand side and then zoom into Port Phillip Heads. You can also look 4-7 days in advance.


Seabreeze is a windsurfing website which gives the wind, swell and temperature for Melbourne. Its swell prediction is usually more than the actual and is only good to look a maximum 4 days ahead.


This site gives you a look at the current conditions of the heads. Select Point Nepean for swell or Point Lonsdale for wind.

Its always important to note the period of the swell and direction of the wind as a 40k/hr Northerly wind is great for diving outside the heads but maybe too lumpy for Portsea Hole.

To transit Port Phillip Heads the significant swell must be less than 2 metres and wind less than 20kts from the Southerly half. All these sites are usually updated around 5am and 5pm each day. If we think the weather will cancel your trip we will either call or email following the update the day before so it is essential that you have given us all your details.

Forecast for Port Phillip and Western Port

Tuesday, 23rd May

A cold front over central Victoria will weaken and slip southeastwards this morning. Another cold front will approach western Victoria this evening and cross the State on Wednesday morning before a ridge of high pressure extends over northern Victoria. A weak cold front will move across Bass Strait and coastal Victoria on Thursday before the ridge of high pressure is maintained across Victoria on Friday.

Forecast for Port Phillip

Tuesday, 23rd May

Strong Wind Warning for Tuesday for Port Phillip

Northerly 15 to 25 knots increasing to 20 to 30 knots early in the morning then decreasing to 15 to 25 knots in the late morning. Wind easing to 15 to 20 knots during the afternoon.

Wednesday, 24th May

Strong Wind Warning for Wednesday for Port Phillip

North to northwesterly 15 to 20 knots shifting westerly 20 to 30 knots around dawn. Wind tending west to southwesterly 15 to 25 knots during the late afternoon then tending west to northwesterly 15 to 20 knots during the evening.

Thursday, 25th May

North to northwesterly 10 to 15 knots increasing to 20 knots before tending west to northwesterly 10 to 15 knots during the afternoon.

Friday, 26th May

Westerly 10 to 15 knots shifting north to northeasterly during the afternoon.

Last Updated: 23/05/2017 05:10am