Water temperature in Costinesti

This data the coastal Costinesti 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 Costinesti

Water temperature in Costinesti today is 21.7°C. Based on our historical data over a period of ten years, the warmest water in this day in Costinesti was recorded in 2023 and was 23.1°C, and the coldest was recorded in 2022 at 18°C. Sea water temperature in Costinesti is expected to drop to 19.6°C in the next 10 days. September average water temperature in Costinesti is 22.7°C, the minimum temperature is 17.7°C, and the maximum is 26.1°C.

The swimming season in Costinesti lasts from June to October. During those months, Costinesti water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Costinesti in winter reaches 7.7°C, in spring 10.8°C, in summer the average temperature rises to 23.8°C, and in autumn it is 18.2°C.

Costinesti water temperature now

The sea salinity in Costinesti is 15.70‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Costinesti 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 Costinesti. 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 Costinesti. 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 Costinesti

Costinesti weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
15.6°C	15.4°C	15.2°C	16.9°C

12-15 h	15-18 h	18-21 h	21-24 h
17.8°C	17.5°C	16.5°C	15.6°C

Costinesti water temperature by month

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

The nearest beaches and cities from Costinesti 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
Tuzla	21.8°C	18°C		1.37 m
Olimp	21.8°C	18°C		1.37 m
Eforie Sud	21.8°C	17°C		1.33 m
Venus	21.9°C	18°C		1.37 m
Saturn	21.9°C	18°C		1.37 m
Neptun	21.9°C	18°C		1.37 m
Eforie Nord	21.9°C	17°C		1.23 m
Doi Mai	22°C	18°C		1.35 m
Durankulak	21.9°C	17°C		1.35 m
Krapets	22°C	17°C		1.36 m

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Our report for Costinesti 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.