
This data the coastal Ninety Mile Beach 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 Ninety Mile Beach today is 17.1°C. Based on our historical data over a period of ten years, the warmest water in this day in Ninety Mile Beach was recorded in 2024 and was 19.2°C, and the coldest was recorded in 2019 at 16.5°C. Sea water temperature in Ninety Mile Beach is expected to rise to 17.8°C in the next 10 days. December average water temperature in Ninety Mile Beach is 17.6°C, the minimum temperature is 15.6°C, and the maximum is 20.3°C.
The swimming season in Ninety Mile Beach lasts from January to February. During those months, Ninety Mile Beach water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Ninety Mile Beach in winter reaches 12.9°C, in spring 14.2°C, in summer the average temperature rises to 18.8°C, and in autumn it is 17.4°C.
| 12 December 2025 |
|---|
| today temp |
| 17.1°C |
| 11 December 2025 |
|---|
| yesterday temp |
| 16.6°C |
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 Ninety Mile Beach. 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 Ninety Mile Beach. Data in table shown for 13 December 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 |
|---|---|---|---|
| 3' 2" | 3' 4" | 3' 7" | 3' 8" |
| 0.96 m | 1.01 m | 1.09 m | 1.12 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 3' 5" | 3' 1" | 2' 9" | 2' 7" |
| 1.04 m | 0.93 m | 0.85 m | 0.78 m |
Data in a table show Ninety Mile Beach temperature today (13 December 2025). For more information and forecast for a few days, go to the weather forecast Ninety Mile Beach.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
| 13.3°C | 12.8°C | 13°C | 19.3°C |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 22.8°C | 21.6°C | 20.5°C | 17°C |
You may also be interested in other sections of our site for Ninety Mile Beach: Sunrise and Sunset
These figures shows the average, minimum and maximum monthly sea temperature in Ninety Mile Beach. 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 Ninety Mile Beach 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
