Una River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Una River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Una River today is 19.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 6 | 19.8°C | 18.0°C | |
| JUN 7 | 19.7°C | 18.0°C | |
| JUN 8 | 18.8°C | 18.0°C | |
| JUN 10 | 19.3°C | 18.0°C | |
| JUN 11 | 19.3°C | 18.0°C | |
| JUN 12 | 19.3°C | 18.0°C | |
| JUN 13 | 19.3°C | 18.0°C | |
| JUN 14 | 18.0°C | 19.0°C | |
| JUN 15 | 18.0°C | 19.0°C | |
| JUN 16 | 18.0°C | 18.9°C | |
| JUN 17 | 18.0°C | 18.9°C | |
| JUN 18 | 18.0°C | 18.8°C | |
| JUN 19 | 18.0°C | 18.8°C | |
| JUN 20 | 18.0°C | 18.7°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 | 7°C | 12°C | 15°C |
| May | 9°C | 14°C | 20°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 | 6°C | 10°C | 13°C |
| December | 4°C | 8°C | 11°C |
Una River: Water Temperature by Location
Una River: Weather Forecast
June 13
June 14
June 15
June 16
Location & Local Information
Source Vrelo Une
• location Donja Suvaja
• coordinates 44.399457°N 16.103796°E
• elevation 358,850 m (1,177,330 ft)
Mouth Sava
• location Jasenovac
• coordinates 45.270°N 16.918°E
• elevation 95 m (312 ft)
Length 214.6 km (133.3 mi)
The Una River, which partly flows through Croatia along the border with Bosnia and Herzegovina, is famous for its clear and cold waters. Even in the height of summer, the temperature of the Una usually stays between 18–22°C, which feels refreshing compared to many other rivers and lakes in the region. The coolness comes from its source in the mountains and the continuous flow through rocky terrain, keeping the water clean and lively.
Swimming in the Una is possible and often enjoyed during hot summer days, though the water is noticeably cooler than in lowland rivers. In calmer sections with accessible banks, locals and visitors take dips to cool off, while stronger currents are better suited for activities like rafting rather than swimming. The beauty of the river, with its turquoise color and natural surroundings, makes swimming here not only refreshing but also a unique experience.