Water temperature in Naoshima

This data the coastal Naoshima 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 Naoshima

Water temperature in Naoshima today is 17.3°C. Based on our historical data over a period of ten years, the warmest water in this day in Naoshima was recorded in 2024 and was 18.6°C, and the coldest was recorded in 2008 at 16.7°C. Sea water temperature in Naoshima is expected to drop to 16.2°C in the next 10 days. November average water temperature in Naoshima is 19.5°C, the minimum temperature is 15.9°C, and the maximum is 23.3°C.

The swimming season in Naoshima lasts from June to October. During those months, Naoshima water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Naoshima in winter reaches 13.4°C, in spring 14.5°C, in summer the average temperature rises to 24.1°C, and in autumn it is 23.4°C.

Naoshima water temperature now

Surf Forecast in Naoshima 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 Naoshima. 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 Naoshima. Data in table shown for 28 November 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Naoshima

Naoshima weather forecast

Current temperature and weather

Data in a table show Naoshima temperature today (28 November 2025). For more information and forecast for a few days, go to the weather forecast Naoshima.

0-3 h	3-6 h	6-9 h	9-12 h
11.8°C	10.8°C	10.3°C	12.5°C

12-15 h	15-18 h	18-21 h	21-24 h
15.3°C	16.4°C	15.1°C	13.3°C

Naoshima water temperature by month

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

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Our report for Naoshima 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.