Jervis Bay Sea Temperature
Updated Mon 05:17 (Australia/Brisbane)
Australia · Forecast updated Aug 10, 2026, 05:17 UTC
Current Sea Temperature
17.7°C
63.9°F
Cold water
Versus this month's average
0.4°C below
The August average in our archive is 18.1°C (64.6°F).
Recent trend
Holding fairly steady
Seven-day average: 18.2°C, versus 18.3°C in the prior seven days.
What to wear
Cold water
Use a full 3-5 mm wetsuit and keep the session within your cold-water experience.
Cold tolerance varies. Wind, session length, sunshine, and exertion also affect comfort; temperature alone does not describe sea conditions.
Sea Surface Temperature Over the Year
In the data collected for Jervis Bay, monthly averages range from about 18.0°C (64.4°F) in July to 19.2°C (66.6°F) in June.
Over the past 30 days, the average sea temperature in Jervis Bay has been 18.1°C.
Monthly Water Temperature Averages
| Month | Min | Average | Max |
|---|---|---|---|
| June | 18.7°C / 65.7°F | 19.2°C / 66.6°F | 20.5°C / 68.9°F |
| July | 17.1°C / 62.8°F | 18.0°C / 64.4°F | 18.9°C / 66.0°F |
| August | 17.5°C / 63.5°F | 18.1°C / 64.6°F | 18.6°C / 65.5°F |
Profile calculated from 1693 hourly forecast records across 3 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Jervis Bay
Marine park with white-sand beaches and clear seagrass and reef shallows.
- Area
- New South Wales
Jervis Bay Water Temperature: Common Questions
What is the sea temperature in Jervis Bay today?
The current sea surface temperature in Jervis Bay is 17.7°C. Over the last 30 days, the average has been 18.1°C.
When is the water warmest in Jervis Bay?
The warmest monthly average in the Jervis Bay archive is June, at around 19.2°C (66.6°F).
When is the water coldest in Jervis Bay?
The coldest monthly average in the archive is July, at around 18.0°C (64.4°F). A wetsuit is usually recommended during this period.
Can you swim in Jervis Bay today?
The water is 17.7°C. It may feel cool, but a wetsuit or short swims can help.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Jervis Bay.
View Snorkel Forecast →