Sydney Dive Conditions

To help you get the most from your diving.

Diving Conditions Report for Sydney, 21 July 2024

What a splendid morning in Sydney! With clear blue skies and a sunny forecast, it’s an ideal day for diving. The maximum air temperature is expected to be a comfortable 18°C, while the water temperature has slightly dropped to 17.5°C.

The swell is currently at 1.4m from the SSW but is expected to swing south as the day progresses, which will, unfortunately, rule out Bare Island for today’s dives. However, the strong westerly wind is creating favourable conditions at most dive sites around Sydney, which should offer some good diving experiences.

Visibility is excellent today, ranging from 8 to 10m. Low tide is at 1:36 pm, making it a great time to explore the dive sites around Sydney. As always, it’s important to check out the particular site before committing to it.

While we strive to provide the most accurate information, diving conditions can change rapidly. Always check the latest updates before you head out. Enjoy the beautiful day, and have a safe dive!

Note: It is important to remember that this page should only be taken as a guide.

When choosing your dive site to get the best conditions, we make the following recommendations:

How Conditions Affect Dive Sites

Lily Pill  Well-protected against all swell, exposed to strong Westerly winds. Best on an incoming tide
Ship Rock  Not exposed to any swell, best on a high slack tide. The best time is 15 minutes prior to high tide
Bass & Flinders  Good, except for a NE swell greater than 1.4m. Best to scuba dive on an incoming tide
Oak Park  Should not dive if  SE to N Swell great than 0.7m, Best diving on low tide
VooDoo  Best SW to NW swells. All other conditions' swell must be less than 0.5m. Best on High Tide.
Cape Solander  Best SW to NW swells. All other conditions' swell must be less than 0.7m. Tide has no effect
The Leap  Should not dive if swell E to S greater than 1m, Best on an incoming tide, close to high tide
The Steps  Protected with exposure to E to ESE swell greater than 1m. 
Sutherland Point  Well protected with only exposure is an ESE swell greater than 1.8m. The best tide is incoming.
Bare Island  Should not dive if S swell is greater than 1.2m. The best diving is an N swell and incoming tide

 

Understanding Water Visibility in the Ocean Around Sydney

Are you a scuba diver getting ready to explore the waters around Sydney? If so, it’s important to understand how water visibility can vary in your area. Understanding local currents, weather conditions and other factors will help you maximise any dive. Knowledge is key to ensuring a safe and enjoyable experience underwater – so let’s delve into some factors that affect water visibility in Sydney!

When you are planning to dive in the water around Sydney, it is important to understand water visibility. Water visibility is defined as how far down a diver can see in the water. It can vary greatly depending on the area and water conditions like weather, surf and tides. On any day in Sydney, water visibility can range from crystal clear up to muddled with sediment due to storm surges and heavy rains. For example, after a strong storm, wind and heavy rainwater visibility, today might be reduced, resulting in a more difficult time for divers with less environmental awareness than normal. Divers need to observe water visibility before entering the ocean to ensure optimal safety standards are upheld.

Varying environmental factors can largely impact the clarity of the water. Heavy precipitation and strong winds, for instance, may cause the surface to become disturbed, resulting in a build-up of sediment that blocks visibility. Tides also play an essential role in sight - powerful waves disrupt settled particles while slack high tide offers optimal conditions during weak tidal flow as more debris is likely to settle on the ocean floor. If you're looking for optimal visibility, the rivers and Sydney Harbour/Botany Bay regions are where to be – particularly during slack high tide. When diving locations such as Bare Island, the eastern side of this island is often best since here water movement is limited.

Additionally, seasonal algal blooms caused by nutrients in the water body can drastically reduce water visibility over an area. Understanding all these key factors is essential for navigating in any body of water with optimal safety and efficiency.

Visibility can be one of the most important considerations for dive site selection. Reading dive reports is an excellent way to help ensure that dive sites have good visibility conditions. Pay attention to the details of the dive report, such as where there could be a greater sediment concentration or if strong currents or tides were noted. Tides can bring different nutrients and particles into dive sites which may affect visibility, so researching predicted tides in a dive location is necessary. Other factors should also be considered, such as the direction of the surf and the wind direction, which can help remove any suspended particles or sediment from an area. This information can help you select dive sites with higher water visibility conditions.

Overall, understanding water visibility and the factors that cause it is essential for any diver preparing to explore the oceans around Sydney. Different days bring different conditions, so be sure to plan your dive trip accordingly and keep a keen eye on both surf and tides, as they affect visibility greatly. By following these tips, divers in Sydney will be able to find the best sites with the greatest visibility, allowing them to make the most of their time underwater with an experience like no other. 

Sydney weather conditions/ diving conditions forecast

The diving conditions in Sydney vary throughout the year.

Water temperatures usually range from 15C to 25C, with visibility from 1m to 20m, with normal visibility from 5m to 10m. Diving in Sydney is good all year round. 

Sydney Sea Water Temperatures

Currently water temperature 18c
MonthMin °CMax °C
January 21.5 25.1
February 22.1 25.3
March 21.6 25.3
April 20.8 24.6
May 18.8 22.6
June 17.5 21.1
July 17.3 20.9
August 17.4 20.2
September 17.2 19.9
October 17.5 20.9
November 19.1 22.1
December 19.5 24.3

Other Sydney weather resources

Sydney ocean conditions forecast 
Sydney sea temperature 

Dive conditions Forecast for Cronulla Beach.
 
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