This data the coastal Deception 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 Deception Bay today is 19.3°C. Based on our historical data over a period of ten years, the warmest water in this day in Deception Bay was recorded in 2024 and was 21.5°C, and the coldest was recorded in 2014 at 17.8°C. Sea water temperature in Deception Bay is expected to rise to 20°C in the next 10 days. September average water temperature in Deception Bay is 20.2°C, the minimum temperature is 17.8°C, and the maximum is 23°C.
The swimming season in Deception Bay lasts from September to July. During those months, Deception Bay water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Deception Bay in winter reaches 19°C, in spring 22.3°C, in summer the average temperature rises to 26.5°C, and in autumn it is 23.7°C.
5 September 2025 |
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today temp |
19.3°C |
4 September 2025 |
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yesterday temp |
18.9°C |
The ocean salinity in Deception Bay is 35.65‰, 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 Deception 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 Deception Bay. Data in table shown for 6 September 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' 9" | 1' 3" | 1' 11" | 2' 1" |
0.23 m | 0.38 m | 0.59 m | 0.63 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
1' 10" | 2' 0" | 2' 4" | 2' 6" |
0.57 m | 0.62 m | 0.7 m | 0.77 m |
Data in a table show Deception Bay temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Deception Bay.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
17.8°C | 17.1°C | 16.7°C | 20.7°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
23.1°C | 22.3°C | 18.1°C | 18.6°C |
You may also be interested in other sections of our site for Deception Bay: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in Deception 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 Deception 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 | 26.8°C | 24.5°C | 28.7°C | hot |
Ocean water temperature in Deception Bay in January | ||||
February | 26.9°C | 24.9°C | 28.8°C | hot |
Ocean water temperature in Deception Bay in February | ||||
March | 25.9°C | 24°C | 28.4°C | hot |
Ocean water temperature in Deception Bay in March | ||||
April | 23.9°C | 21.4°C | 26.5°C | warm |
Ocean water temperature in Deception Bay in April | ||||
May | 21.4°C | 17.4°C | 23.7°C | warm |
Ocean water temperature in Deception Bay in May | ||||
June | 19.6°C | 16.3°C | 22.4°C | cold |
Ocean water temperature in Deception Bay in June | ||||
July | 18.8°C | 15.4°C | 21.2°C | cold |
Ocean water temperature in Deception Bay in July | ||||
August | 18.7°C | 15.7°C | 22.1°C | cold |
Ocean water temperature in Deception Bay in August | ||||
September | 20.2°C | 17.8°C | 23°C | warm |
Ocean water temperature in Deception Bay in September | ||||
October | 22.4°C | 20.1°C | 24.8°C | warm |
Ocean water temperature in Deception Bay in October | ||||
November | 24.2°C | 21.8°C | 26.1°C | warm |
Ocean water temperature in Deception Bay in November | ||||
December | 25.8°C | 23.9°C | 28.7°C | hot |
Ocean water temperature in Deception Bay in December |