Oneloa Bay water temp

This data the coastal Oneloa 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.

Current ocean temperature in Oneloa Bay

Water temperature in Oneloa Bay today is 80.6°F. Based on our historical data over a period of ten years, the warmest water in this day in the Pacific Ocean near Oneloa Bay was recorded in 2019 and was 82.8°F, and the coldest was recorded in 2012 at 77.4°F. Sea water temperature in Oneloa Bay is expected to drop to 80.2°F in the next 10 days. September average water temperature in Oneloa Bay is 80.1°F, the minimum temperature is 77°F, and the maximum is 84.2°F.

The swimming season in Oneloa Bay lasts from January to December, twelve months per year! During those months, Oneloa Bay water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Oneloa Bay in winter reaches 76.6°F, in spring 76.3°F, in summer the average temperature rises to 78.8°F, and in autumn it is 79.7°F.

Oneloa Bay water temperature now

Surf Forecast in Oneloa Bay 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 Oneloa 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 Oneloa 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)

Surf report in Oneloa Bay

Oneloa Bay weather forecast

Current temperature and weather

Data in a table show Oneloa Bay temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Oneloa Bay.

0-3 h	3-6 h	6-9 h	9-12 h
74.3°F	73.8°F	74.8°F	78.6°F

12-15 h	15-18 h	18-21 h	21-24 h
79.3°F	79.9°F	76.8°F	75.9°F

Oneloa Bay water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Oneloa 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 Oneloa 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

Chart monthly average water temperature in Oneloa Bay

The nearest beaches and cities from Oneloa Bay 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
Ironwood Beach	80.6°F	80.6°F		2' 7"
Lahaina	81.1°F	78.8°F		1' 11"
Olowalu	81.1°F	80.6°F		1' 8"
Maalaea	80.8°F	80.6°F		2' 1"
Sugar Beach	80.8°F	80.6°F		2' 1"
Kihei	80.6°F	80.6°F		2' 0"
Wailea	80.4°F	80.6°F		2' 1"
Keawakapu Beach	80.4°F	80.6°F		2' 1"
Molokini	80.1°F	77°F		2' 11"
Makena Beach	80.1°F	77°F		2' 11"

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Oneloa Beach

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Our report for Oneloa Bay 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.