Water temperature in Naha

This data the coastal Naha sea 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 sea temperature in Naha

Water temperature in Naha today is 29.9°C. Based on our historical data over a period of ten years, the warmest water in this day in Naha was recorded in 2024 and was 29.4°C, and the coldest was recorded in 2019 at 27.1°C. Sea water temperature in Naha is expected to drop to 27.8°C in the next 10 days. September average water temperature in Naha is 28.7°C, the minimum temperature is 26.3°C, and the maximum is 30.7°C.

The swimming season in Naha lasts from January to December, twelve months per year! During those months, Naha water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Naha in winter reaches 22.7°C, in spring 23°C, in summer the average temperature rises to 28.2°C, and in autumn it is 27.2°C.

Naha water temperature now

The sea salinity in Naha is 34.12‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Naha 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 Naha. 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 Naha. Data in table shown for 26 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Naha

Naha weather forecast

Current temperature and weather

Data in a table show Naha temperature today (26 September 2025). For more information and forecast for a few days, go to the weather forecast Naha.

0-3 h	3-6 h	6-9 h	9-12 h
28.4°C	28°C	28.1°C	29°C

12-15 h	15-18 h	18-21 h	21-24 h
29.6°C	29.7°C	28.7°C	28.2°C

Naha water temperature by month

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

The nearest beaches and cities from Naha 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
Kerama Islands	29.7°C	30°C		1.03 m
Zamami	29.8°C	30°C		1.06 m
Ishigaki	29.6°C	29°C		1.15 m
Yonakuni	29.6°C	29°C		1.25 m
Yakushima	29.4°C	28°C		0.72 m
Fulong Bathing Beach	26.9°C	28°C		1.27 m
Taipei	28.9°C	29°C		1.09 m
Suao	29.1°C	28°C		1.23 m
Keelung	28°C	29°C		1.05 m
Nishinoomote	28.9°C	28°C		1.03 m

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Our report for Naha 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.