Water temperature in Minamata

This data the coastal Minamata 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 Minamata

Water temperature in Minamata today is 27.4°C. Based on our historical data over a period of ten years, the warmest water in this day in Minamata was recorded in 2023 and was 27.8°C, and the coldest was recorded in 2011 at 24.7°C. Sea water temperature in Minamata is expected to drop to 25.2°C in the next 10 days. September average water temperature in Minamata is 26.7°C, the minimum temperature is 24.5°C, and the maximum is 29.3°C.

The swimming season in Minamata lasts from June to November. During those months, Minamata water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Minamata in winter reaches 16.1°C, in spring 17.2°C, in summer the average temperature rises to 25.6°C, and in autumn it is 24°C.

Minamata water temperature now

The sea salinity in Minamata is 31.50‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Minamata 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 Minamata. 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 Minamata. 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 Minamata

Minamata weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
24.7°C	24.3°C	24.2°C	26.5°C

12-15 h	15-18 h	18-21 h	21-24 h
27.9°C	28.1°C	26.2°C	25.1°C

Minamata water temperature by month

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

The nearest beaches and cities from Minamata 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
Yatsushiro	27.5°C	28°C		0.09 m
Ushibuka	28.4°C	27°C		0.21 m
Shimabara	27.1°C	26°C		0.06 m
Togitsu	28.4°C	27°C		0.21 m
Kurume	27°C	28°C		0.04 m
Okawa	27°C	28°C		0.04 m
Saga Shi	27.2°C	28°C		0.04 m
Miyazaki Shi	27.4°C	26°C		1.54 m
Sasebo	27.5°C	25°C		0.11 m
Nobeoka	26.8°C	26°C		0.75 m

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Our report for Minamata 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.