All data are in degrees Fahrenheit

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Water temperature in Istria

Detailed information about the current water temperature in Istria. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Istria now

73.8

°F

September 15, 09:38

Trend:

stable

Yesterday:

73.5°F

Tomorrow:

73.8°F

Sunrise:

06:43

Sunset:

19:17

Day Length:

12 h. 34 min.

Istria in September

Minimum:

40.0°F

Average:

43.0°F

Maximum:

46.5°F

Sea water temperature in Istria today

As of now, in Istria, the water temperature is 73.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.9°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 74.0°F on 2016, while the historical minimum was 69.9°F on 2022.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 72.6°F, the minimum temperature may reach 71.0°F, and the maximum might stay at 73.8°F.

Daily water temperature in Istria

Date Current Year

actual* / forecast**

last year 10 years average
Sep 1 74.4°F 74.8°F 76.0°F
Sep 2 75.3°F 73.6°F 75.2°F
Sep 3 75.9°F 74.5°F 74.9°F
Sep 4 76.2°F 75.4°F 74.8°F
Sep 5 76.8°F 75.6°F 74.4°F
Sep 6 76.5°F 76.0°F 73.7°F
Sep 7 75.3°F 73.4°F 72.8°F
Sep 8 74.0°F 72.0°F 72.3°F
Sep 9 72.7°F 71.8°F 71.7°F
Sep 10 72.1°F 71.8°F 71.8°F
Sep 11 72.3°F 72.8°F 71.9°F
Sep 12 72.0°F 72.0°F 71.7°F
Sep 13 73.6°F 71.9°F 71.8°F
Sep 14 73.5°F 71.0°F 71.6°F
Sep 15 73.8°F 70.8°F 71.9°F
Sep 16 73.8°F 70.1°F 71.8°F
Sep 17 73.5°F 69.0°F 71.5°F
Sep 18 73.3°F 68.7°F 71.3°F
Sep 19 72.8°F 66.8°F 70.9°F
Sep 20 72.5°F 66.3°F 70.5°F
Sep 21 71.8°F 65.2°F 69.9°F
Sep 22 71.0°F 64.9°F 69.0°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Istria by month

In Istria, the months July through August offer comfortable swimming conditions, which amounts to 84 swimming days.
The warmest water in Istria was recorded on July 18, 2024, reaching a 84.0°F. While the coldest temperature occurred on February 14, 2026, dipping to 34.2°F. The average readings by season are 43.3°F in Winter, 53.6°F in Spring, 76.1°F in Summer, and 62.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Constanţa 73.2°F 27mi
Eforie Nord 74.0°F 35mi
Mangalia 74.4°F 52mi

* current water temperature in this city

** straight line distance from Istria