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Water temperature in Najin

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This data the coastal Najin 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 Najin

Water temperature in Najin today is 23.6°C. Based on our historical data over a period of ten years, the warmest water in this day in Najin was recorded in 2010 and was 22.6°C, and the coldest was recorded in 2016 at 18.9°C. Sea water temperature in Najin is expected to drop to 19.9°C in the next 10 days. September average water temperature in Najin is 19.9°C, the minimum temperature is 16.1°C, and the maximum is 23.7°C.

The swimming season in Najin lasts from July to September. During those months, Najin water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Najin in winter reaches 3.3°C, in spring 5°C, in summer the average temperature rises to 19.1°C, and in autumn it is 15.7°C.

Najin water temperature now


6 September 2025
today temp
23.6°C
5 September 2025
yesterday temp
23.6°C


The sea salinity in Najin is 32.82‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Najin 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 Najin. 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 Najin. 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)

0-3 h3-6 h6-9 h9-12 h
2' 6"2' 5"2' 3"2' 2"
0.77 m0.74 m0.69 m0.67 m
12-15 h15-18 h18-21 h21-24 h
2' 0"1' 9"1' 7"1' 5"
0.62 m0.54 m0.48 m0.42 m

Surf report in Najin

Najin wave height and direction

Najin weather forecast

Najin wind speed and direction

Current temperature and weather

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

0-3 h3-6 h6-9 h9-12 h
20.8°C20.5°C20.5°C21.1°C
12-15 h15-18 h18-21 h21-24 h
20.2°C20.7°C21.2°C20.5°C

You may also be interested in other sections of our site for Najin: Sunrise and Sunset, Tides

Najin water temperature by month

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

MonthAvrMinMax
January2.6°C-0.6°C8°Ccold
Sea water temperature in Najin in January
February1.4°C-0.8°C5.5°Ccold
Sea water temperature in Najin in February
March1.8°C-0.7°C5.6°Ccold
Sea water temperature in Najin in March
April4.3°C1.2°C9.7°Ccold
Sea water temperature in Najin in April
May8.8°C4.2°C14.9°Ccold
Sea water temperature in Najin in May
June14.6°C9.6°C22°Ccold
Sea water temperature in Najin in June
July20.1°C14.6°C27.3°Cwarm
Sea water temperature in Najin in July
August22.7°C18.9°C26.9°Cwarm
Sea water temperature in Najin in August
September19.9°C16.1°C23.7°Ccold
Sea water temperature in Najin in September
October15.9°C11.1°C19.9°Ccold
Sea water temperature in Najin in October
November11.2°C4.7°C16.2°Ccold
Sea water temperature in Najin in November
December6°C0.4°C11.1°Ccold
Sea water temperature in Najin in December

Chart monthly average water temperature in Najin

Water temperature in Najin

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

Nearby beaches and cities

The nearest beaches and cities from Najin 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

WaterWeatherWave
Rason23.7°C21°C0.59 m
Sonbong23.8°C21°C0.66 m
Wonsan26.2°C25°C0.34 m
Sokcho26.4°C29°C0.41 m
Gangneung26.3°C31°C0.39 m
Yongpyong26.3°C31°C0.44 m
Tonghae26.2°C28°C0.52 m
Nampo26°C23°C0.34 m
Goyang26.4°C30°C0.4 m
Haeju28.5°C25°C0.28 m

Najin photo gallery

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Najin 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.

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