Water temperature in Kainan

This data the coastal Kainan 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 Kainan

Water temperature in Kainan today is 28.2°C. Based on our historical data over a period of ten years, the warmest water in this day in Kainan was recorded in 2010 and was 28.6°C, and the coldest was recorded in 2013 at 25.3°C. Sea water temperature in Kainan is expected to drop to 26.2°C in the next 10 days. September average water temperature in Kainan is 26.1°C, the minimum temperature is 24°C, and the maximum is 29°C.

The swimming season in Kainan lasts from June to November. During those months, Kainan water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Kainan in winter reaches 15°C, in spring 15.9°C, in summer the average temperature rises to 24.8°C, and in autumn it is 23.4°C.

Kainan water temperature now

The sea salinity in Kainan is 31.39‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Kainan 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 Kainan. 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 Kainan. Data in table shown for 6 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Kainan

Kainan weather forecast

Current temperature and weather

Data in a table show Kainan temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Kainan.

0-3 h	3-6 h	6-9 h	9-12 h
24°C	25.2°C	25.9°C	26.1°C

12-15 h	15-18 h	18-21 h	21-24 h
25.4°C	24.5°C	25.1°C	24.5°C

Kainan water temperature by month

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

The nearest beaches and cities from Kainan 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
Wakayama-Shi	28.2°C	25°C		0.97 m
Shimminatocho	28.2°C	24°C		0.97 m
Akashi	28.6°C	27°C		0.32 m
Tanabe	28.4°C	26°C		1.93 m
Harima	29.4°C	28°C		0.24 m
Amagasaki	29.4°C	26°C		0.3 m
Kakogawa	29.4°C	28°C		0.24 m
Himeji	29.6°C	29°C		0.19 m
Aioi Shi	29.5°C	29°C		0.19 m
Shido	29.6°C	28°C		0.15 m

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Our report for Kainan 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.