Waipahu water temp
This data the coastal Waipahu 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.
Current ocean temperature in Waipahu
Water temperature in Waipahu today is 81°F. Based on our historical data over a period of ten years, the warmest water in this day in the Pacific Ocean near Waipahu was recorded in 2015 and was 83.7°F, and the coldest was recorded in 2012 at 78.6°F. Sea water temperature in Waipahu is expected to be constant 81°F in the next 10 days. September average water temperature in Waipahu is 80.8°F, the minimum temperature is 77.7°F, and the maximum is 84.2°F.
The swimming season in Waipahu lasts from January to December, twelve months per year! During those months, Waipahu water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Waipahu in winter reaches 76.8°F, in spring 76.8°F, in summer the average temperature rises to 79.5°F, and in autumn it is 80.2°F.
Waipahu water temperature now
| September 5, 2025 |
|---|
| today temp |
| 81°F |
| September 4, 2025 |
|---|
| yesterday temp |
| 80.6°F |
The ocean salinity in Waipahu is 35.15‰, and the average salinity of the World Ocean is 35‰.
Surf Forecast in Waipahu for today
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 Waipahu. 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 Waipahu. 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 |
|---|---|---|---|
| 3' 1" | 3' 1" | 3' 1" | 3' 0" |
| 0.95 m | 0.94 m | 0.93 m | 0.91 m |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
| 3' 1" | 3' 0" | 3' 0" | 3' 1" |
| 0.93 m | 0.92 m | 0.92 m | 0.95 m |
Surf report in Waipahu
Waipahu weather forecast
Current temperature and weather
Data in a table show Waipahu temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Waipahu.
| 0-3 h | 3-6 h | 6-9 h | 9-12 h |
|---|---|---|---|
 |  | | |
| 76.5°F | 76.6°F | 75.9°F | 79.7°F |
| 12-15 h | 15-18 h | 18-21 h | 21-24 h |
|---|---|---|---|
 | | | |
| 81.9°F | 82°F | 79.9°F | 77.5°F |
You may also be interested in other sections of our site for Waipahu: Sunrise and Sunset, Tides
Waipahu water temperature by month
These figures shows the average, minimum and maximum monthly sea temperature in Waipahu. 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 Waipahu 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 | 76.6°F | 74.7°F | 78.6°F | warm |
| Ocean water temperature in Waipahu in January | ||||
| February | 76.1°F | 73.8°F | 77.9°F | warm |
| Ocean water temperature in Waipahu in February | ||||
| March | 75.9°F | 73.6°F | 78.1°F | warm |
| Ocean water temperature in Waipahu in March | ||||
| April | 76.6°F | 73.9°F | 79°F | warm |
| Ocean water temperature in Waipahu in April | ||||
| May | 77.7°F | 75.4°F | 80.6°F | hot |
| Ocean water temperature in Waipahu in May | ||||
| June | 78.8°F | 76.3°F | 81.9°F | hot |
| Ocean water temperature in Waipahu in June | ||||
| July | 79.7°F | 77.2°F | 82.6°F | hot |
| Ocean water temperature in Waipahu in July | ||||
| August | 80.2°F | 77.7°F | 83.8°F | hot |
| Ocean water temperature in Waipahu in August | ||||
| September | 80.8°F | 77.7°F | 84.2°F | hot |
| Ocean water temperature in Waipahu in September | ||||
| October | 80.6°F | 78.3°F | 82.9°F | hot |
| Ocean water temperature in Waipahu in October | ||||
| November | 79.5°F | 76.8°F | 82°F | hot |
| Ocean water temperature in Waipahu in November | ||||
| December | 77.7°F | 75.2°F | 80.6°F | hot |
| Ocean water temperature in Waipahu in December | ||||
Chart monthly average water temperature in Waipahu
