Water temperature in Sonbong

This data the coastal Sonbong 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 Sonbong

Water temperature in Sonbong today is 20.6°C. Based on our historical data over a period of ten years, the warmest water in this day in Sonbong was recorded in 2021 and was 20.2°C, and the coldest was recorded in 2009 at 17.6°C. Sea water temperature in Sonbong is expected to drop to 17.2°C in the next 10 days. September average water temperature in Sonbong is 19.9°C, the minimum temperature is 16°C, and the maximum is 23.7°C.

The swimming season in Sonbong lasts from July to September. During those months, Sonbong water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Sonbong in winter reaches 3.1°C, in spring 4.9°C, in summer the average temperature rises to 19.1°C, and in autumn it is 15.6°C.

Sonbong water temperature now

The sea salinity in Sonbong is 32.83‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Sonbong 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 Sonbong. 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 Sonbong. 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 Sonbong

Sonbong weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
19.5°C	18.7°C	17.1°C	20.7°C

12-15 h	15-18 h	18-21 h	21-24 h
22.9°C	24°C	19.7°C	17.4°C

Sonbong water temperature by month

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

The nearest beaches and cities from Sonbong 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
Rason	20.5°C	24°C		0.34 m
Hungnam	22.5°C	24°C		0.25 m
Wonsan	21.9°C	23°C		0.18 m
Sokcho	22.5°C	22°C		0.26 m
Gangneung	22.5°C	23°C		0.25 m
Yongpyong	22.4°C	23°C		0.27 m
Tonghae	22.5°C	23°C		0.27 m
Nampo	22.8°C	24°C		0.16 m
Goyang	22.1°C	27°C		0.11 m
Haeju	22.8°C	25°C		0.09 m

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Our report for Sonbong 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.