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 15.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 5 | 15.1°C | 18.0°C | |
| JUN 6 | 13.8°C | 18.0°C | |
| JUN 7 | 14.3°C | 18.0°C | |
| JUN 8 | 14.2°C | 18.0°C | |
| JUN 10 | 14.9°C | 18.0°C | |
| JUN 11 | 15.2°C | 18.0°C | |
| JUN 12 | 15.5°C | 18.0°C | |
| JUN 13 | 18.0°C | 15.6°C | |
| JUN 14 | 18.0°C | 15.8°C | |
| JUN 15 | 18.0°C | 15.9°C | |
| JUN 16 | 18.0°C | 16.0°C | |
| JUN 17 | 18.0°C | 16.1°C | |
| JUN 18 | 18.0°C | 16.3°C | |
| JUN 19 | 18.0°C | 16.4°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
June 13
June 14
June 15
June 16
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.