Water temperature in Sasebo

This data the coastal Sasebo 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 Sasebo

Water temperature in Sasebo today is 28.9°C. Based on our historical data over a period of ten years, the warmest water in this day in Sasebo was recorded in 2023 and was 28.2°C, and the coldest was recorded in 2015 at 25.9°C. Sea water temperature in Sasebo is expected to drop to 26.6°C in the next 10 days. September average water temperature in Sasebo is 26.3°C, the minimum temperature is 24.2°C, and the maximum is 29.2°C.

The swimming season in Sasebo lasts from June to November. During those months, Sasebo water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Sasebo in winter reaches 15.7°C, in spring 16.5°C, in summer the average temperature rises to 25.1°C, and in autumn it is 23.5°C.

Sasebo water temperature now

The sea salinity in Sasebo is 32.77‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Sasebo 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 Sasebo. 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 Sasebo. 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 Sasebo

Sasebo weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
25.1°C	24.7°C	24.8°C	28.1°C

12-15 h	15-18 h	18-21 h	21-24 h
30°C	30.4°C	27.7°C	25.3°C

Sasebo water temperature by month

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

The nearest beaches and cities from Sasebo 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
Togitsu	29°C	30°C		0.29 m
Saga Shi	29.6°C	32°C		0.01 m
Okawa	29.6°C	32°C		0.01 m
Shimabara	29.6°C	29°C		0.02 m
Fukuoka	29.2°C	30°C		0.74 m
Fukuma	29.3°C	30°C		0.69 m
Kitakysh	29.7°C	29°C		0.34 m
Akune	28.7°C	30°C		0.35 m
Shiida	29.9°C	30°C		0.16 m
Kanda	30°C	30°C		0.25 m

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Our report for Sasebo 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.