Ko Olina water temp

This data the coastal Ko Olina 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 Ko Olina

Water temperature in Ko Olina today is 80.8°F. Based on our historical data over a period of ten years, the warmest water in this day in Ko Olina was recorded in 2019 and was 83.3°F, and the coldest was recorded in 2012 at 78.6°F. Sea water temperature in Ko Olina is expected to rise to 81.1°F in the next 10 days. September average water temperature in Ko Olina is 81°F, the minimum temperature is 77.9°F, and the maximum is 84.4°F.

The swimming season in Ko Olina lasts from January to December, twelve months per year! During those months, Ko Olina water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Ko Olina in winter reaches 77°F, in spring 77°F, in summer the average temperature rises to 79.9°F, and in autumn it is 80.6°F.

Ko Olina water temperature now

The ocean salinity in Ko Olina is 34.88‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Ko Olina 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 Ko Olina. 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 Ko Olina. Data in table shown for September 15, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Ko Olina

Ko Olina weather forecast

Current temperature and weather

Data in a table show Ko Olina temperature today (September 15, 2025). For more information and forecast for a few days, go to the weather forecast Ko Olina.

0-3 h	3-6 h	6-9 h	9-12 h
77°F	75.7°F	76.3°F	78.1°F

12-15 h	15-18 h	18-21 h	21-24 h
80.8°F	82.8°F	80.2°F	78.1°F

Ko Olina water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Ko Olina. 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 Ko Olina 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

Chart monthly average water temperature in Ko Olina

The nearest beaches and cities from Ko Olina with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Electric Beach	80.8°F	82.4°F		3' 9"
Kahe Point Beach	80.8°F	82.4°F		3' 9"
Nimitz Beach	81°F	82.4°F		3' 7"
Kapolei	81°F	82.4°F		3' 7"
White Plains Beach	81°F	82.4°F		3' 6"
Aiea	81°F	80.6°F		3' 6"
Pearl City	81°F	80.6°F		3' 6"
Yokohama Beach	81.1°F	82.4°F		3' 2"
Kahaluu	80.1°F	78.8°F		4' 4"
Waikiki	81.1°F	80.6°F		3' 7"

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Ko Olina Beach

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Our report for Ko Olina is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.