Water temperature in Marina Julia

This data the coastal Marina Julia 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 Marina Julia

Water temperature in Marina Julia today is 21.3°C. Based on our historical data over a period of ten years, the warmest water in this day in the Adriatic Sea near Marina Julia was recorded in 2011 and was 22°C, and the coldest was recorded in 2022 at 19°C. Sea water temperature in Marina Julia is expected to drop to 19.5°C in the next 10 days. October average water temperature in Marina Julia is 19.1°C, the minimum temperature is 15.9°C, and the maximum is 22.1°C.

The swimming season in Marina Julia lasts from June to October. During those months, Marina Julia water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Marina Julia in winter reaches 10.5°C, in spring 13.9°C, in summer the average temperature rises to 24.6°C, and in autumn it is 19.1°C.

Marina Julia water temperature now

The sea salinity in Marina Julia is 35.94‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Marina Julia 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 Marina Julia. 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 Marina Julia. Data in table shown for 4 October 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Marina Julia

Marina Julia weather forecast

Current temperature and weather

Data in a table show Marina Julia temperature today (4 October 2025). For more information and forecast for a few days, go to the weather forecast Marina Julia.

0-3 h	3-6 h	6-9 h	9-12 h
11.3°C	9.2°C	9.3°C	11.9°C

12-15 h	15-18 h	18-21 h	21-24 h
14.6°C	15.1°C	13°C	10.8°C

Marina Julia water temperature by month

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

The nearest beaches and cities from Marina Julia 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
Izola	21.8°C	16°C		0.19 m
Koper	21.8°C	16°C		0.19 m
Jagodje	21.8°C	16°C		0.19 m
Piran	22°C	16°C		0.21 m
Strunjan	21.9°C	16°C		0.19 m
Portoroz	22°C	16°C		0.2 m
Savudrija	22.1°C	16°C		0.26 m
Basanija	22.1°C	16°C		0.26 m
Zambratija	22.1°C	16°C		0.26 m
Lignano Sabbiadoro	21.5°C	16°C		0.24 m

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Our report for Marina Julia 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.