What is the current water temperature in Istria?

Q: What is the current water temperature in Istria?

As of now, in Istria, the water temperature is 18.66°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

Romania > Istria

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.

65.6

°F

October 13, 19:54

Trend:

decreasing

Yesterday:

66.1°F

Tomorrow:

65.0°F

Sunrise:

07:17

Sunset:

18:25

Day Length:

11 h. 8 min.

Istria in October

Minimum:

39.0°F

Average:

42.7°F

Maximum:

46.3°F

Sea water temperature in Istria today

As of now, in Istria, the water temperature is 65.6°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 3.0°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 67.6°F on 2020, while the historical minimum was 58.8°F on 2025.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 63.7°F, the minimum temperature may reach 62.5°F, and the maximum might stay at 65.0°F.

Daily water temperature in Istria

Date	Current Year actual* / forecast**	last year	10 years average
Sep 29	65.9°F	65.7°F	67.0°F
Sep 30	64.2°F	65.9°F	66.9°F
Oct 1	61.6°F	64.7°F	66.5°F
Oct 2	59.9°F	63.2°F	65.6°F
Oct 3	58.2°F	63.5°F	65.2°F
Oct 4	58.0°F	63.6°F	64.7°F
Oct 5	57.5°F	62.9°F	64.4°F
Oct 6	59.2°F	62.7°F	64.6°F
Oct 7	60.0°F	62.7°F	64.4°F
Oct 8	61.4°F	62.9°F	64.7°F
Oct 9	62.3°F	63.0°F	64.5°F
Oct 10	63.5°F	63.0°F	64.3°F
Oct 11	63.8°F	62.0°F	63.9°F
Oct 12	66.1°F	59.7°F	63.6°F
Oct 13	65.6°F	58.8°F	62.5°F
Oct 14	65.0°F	58.7°F	62.0°F
Oct 15	64.5°F	58.6°F	61.5°F
Oct 16	64.3°F	58.6°F	61.3°F
Oct 17	63.6°F	57.1°F	60.6°F
Oct 18	63.1°F	56.7°F	60.1°F
Oct 19	62.6°F	56.8°F	59.6°F
Oct 20	62.5°F	55.8°F	59.4°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	66.6°F	27mi
Eforie Nord	67.1°F	35mi
Mangalia	67.7°F	52mi

* current water temperature in this city

** straight line distance from Istria