This data the coastal Rose Bay ocean water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Water temperature in Rose Bay today is 75.9°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Rose Bay was recorded in 2018 and was 85.8°F, and the coldest was recorded in 2024 at 77.9°F. Sea water temperature in Rose Bay is expected to rise to 79°F in the next 10 days. September average water temperature in Rose Bay is 78.4°F, the minimum temperature is 70.7°F, and the maximum is 86°F.
The swimming season in Rose Bay lasts from May to October. During those months, Rose Bay water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Rose Bay in winter reaches 55.9°F, in spring 63.7°F, in summer the average temperature rises to 81.7°F, and in autumn it is 70.7°F.
September 5, 2025 |
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today temp |
75.9°F |
September 4, 2025 |
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yesterday temp |
75.2°F |
The ocean salinity in Rose Bay is 30.70‰, and the average salinity of the World Ocean is 35‰.
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Rose Bay. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Rose Bay. Data in table shown for September 5, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
0' 11" | 0' 8" | 0' 7" | 0' 5" |
0.27 m | 0.21 m | 0.17 m | 0.13 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
0' 4" | 0' 6" | 1' 0" | 0' 10" |
0.11 m | 0.14 m | 0.3 m | 0.26 m |
Data in a table show Rose Bay temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Rose Bay.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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![]() | ![]() | ![]() | ![]() |
75.7°F | 75.2°F | 74.7°F | 77.9°F |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
83.7°F | 82.9°F | 79.7°F | 76.8°F |
You may also be interested in other sections of our site for Rose Bay: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in Rose Bay. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Rose Bay on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
Month | Avr | Min | Max | |
---|---|---|---|---|
January | 55.4°F | 35.6°F | 66.4°F | cold |
Ocean water temperature in Rose Bay in January | ||||
February | 55.2°F | 38.3°F | 63.5°F | cold |
Ocean water temperature in Rose Bay in February | ||||
March | 55.8°F | 47.8°F | 65.1°F | cold |
Ocean water temperature in Rose Bay in March | ||||
April | 63.1°F | 53.2°F | 74.5°F | cold |
Ocean water temperature in Rose Bay in April | ||||
May | 72°F | 62.1°F | 82°F | warm |
Ocean water temperature in Rose Bay in May | ||||
June | 79.3°F | 68.9°F | 88.5°F | hot |
Ocean water temperature in Rose Bay in June | ||||
July | 82.9°F | 79°F | 88.5°F | hot |
Ocean water temperature in Rose Bay in July | ||||
August | 82.6°F | 78.1°F | 87.6°F | hot |
Ocean water temperature in Rose Bay in August | ||||
September | 78.4°F | 70.7°F | 86°F | hot |
Ocean water temperature in Rose Bay in September | ||||
October | 70.5°F | 59.9°F | 80.6°F | warm |
Ocean water temperature in Rose Bay in October | ||||
November | 63°F | 49.1°F | 70.9°F | cold |
Ocean water temperature in Rose Bay in November | ||||
December | 57°F | 38.7°F | 66.6°F | cold |
Ocean water temperature in Rose Bay in December |