Dragonja River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Dragonja River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Dragonja River today is 21.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 26 | 16.4°C | 18.0°C | |
| JUN 27 | 16.4°C | 18.0°C | |
| JUN 28 | 16.6°C | 18.0°C | |
| JUN 29 | 16.6°C | 18.0°C | |
| JUN 30 | 17.2°C | 18.0°C | |
| JUL 1 | 16.9°C | 19.0°C | |
| JUL 2 | 17.4°C | 19.0°C | |
| JUL 3 | 21.2°C | 19.0°C | |
| JUL 4 | 19.0°C | 21.1°C | |
| JUL 5 | 19.0°C | 21.0°C | |
| JUL 6 | 19.0°C | 20.9°C | |
| JUL 7 | 19.0°C | 20.8°C | |
| JUL 8 | 19.0°C | 20.7°C | |
| JUL 9 | 19.0°C | 20.5°C | |
| JUL 10 | 19.0°C | 20.4°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 4°C | 8°C | 11°C |
| February | 4°C | 8°C | 10°C |
| March | 7°C | 10°C | 13°C |
| April | 8°C | 12°C | 15°C |
| May | 9°C | 14°C | 18°C |
| June | 13°C | 18°C | 22°C |
| July | 15°C | 19°C | 24°C |
| August | 15°C | 19°C | 24°C |
| September | 12°C | 17°C | 21°C |
| October | 10°C | 14°C | 17°C |
| November | 7°C | 10°C | 13°C |
| December | 5°C | 9°C | 11°C |
Dragonja River: Water Temperature by Location
Dragonja River: Weather Forecast
July 4
July 5
July 6
July 7
Location & Local Information
Source:
• location Poletiči (Koper)
• elevation 315 m (1,033 ft)
Mouth:
• location Adriatic Sea, Sečovlje Saltpans
• coordinates 45°28′42″N 13°35′10″E
Length 30 km (19 mi)
The Dragonja River flows through southwestern Slovenia, forming part of the natural border with Croatia before reaching the Adriatic Sea. Because it is relatively small and shallow, the water temperature in summer tends to rise quickly, often becoming pleasantly warm on hot days. However, the river also reacts to weather changes, so after rain it can cool down noticeably. Unlike large lakes or coastal waters, its conditions vary a lot depending on the season and recent weather.
Swimming in the Dragonja is not common, as the river is narrow, rocky, and in many places quite shallow. Still, on warm summer days locals and hikers sometimes dip their feet or cool off in calm pools along its course. The lower part of the river, closer to the sea, may offer slightly deeper spots suitable for short swims, but overall it is more a place to refresh yourself briefly than for full recreational swimming.