Water temperature in Sumoto

This data the coastal Sumoto 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 Sumoto

Water temperature in Sumoto today is 25.6°C. Based on our historical data over a period of ten years, the warmest water in this day in Sumoto was recorded in 2024 and was 27°C, and the coldest was recorded in 2013 at 24.1°C. Sea water temperature in Sumoto is expected to drop to 24.3°C in the next 10 days. September average water temperature in Sumoto is 25.9°C, the minimum temperature is 23.9°C, and the maximum is 28.7°C.

The swimming season in Sumoto lasts from June to November. During those months, Sumoto water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Sumoto in winter reaches 14.1°C, in spring 15.1°C, in summer the average temperature rises to 24.2°C, and in autumn it is 23.1°C.

Sumoto water temperature now

The sea salinity in Sumoto is 31.25‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Sumoto 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 Sumoto. 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 Sumoto. Data in table shown for 27 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Sumoto

Sumoto weather forecast

Current temperature and weather

Data in a table show Sumoto temperature today (27 September 2025). For more information and forecast for a few days, go to the weather forecast Sumoto.

0-3 h	3-6 h	6-9 h	9-12 h
24°C	22.9°C	22.2°C	23.3°C

12-15 h	15-18 h	18-21 h	21-24 h
23.5°C	25°C	23.5°C	21.7°C

Sumoto water temperature by month

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

The nearest beaches and cities from Sumoto 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
Kainan	25.4°C	25°C		0.22 m
Wakayama-Shi	25.4°C	25°C		0.22 m
Shimminatocho	25.4°C	25°C		0.22 m
Naruto	26.4°C	24°C		0.2 m
Harima	26.8°C	27°C		0.08 m
Kaizuka	25.5°C	26°C		0.12 m
Kishiwada	25.5°C	26°C		0.12 m
Tokushima Shi	25.7°C	25°C		0.34 m
Komatsushima	25.8°C	25°C		0.39 m
Izumiotsu	25.1°C	27°C		0.12 m

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Our report for Sumoto 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.