Ondava River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Ondava River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Ondava River today is 18.3°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 2 | 17.1°C | 18.0°C | |
| JUN 3 | 16.9°C | 18.0°C | |
| JUN 4 | 17.1°C | 18.0°C | |
| JUN 5 | 17.4°C | 18.0°C | |
| JUN 6 | 17.5°C | 18.0°C | |
| JUN 7 | 18.2°C | 18.0°C | |
| JUN 8 | 17.9°C | 18.0°C | |
| JUN 10 | 18.0°C | 18.3°C | |
| JUN 11 | 18.0°C | 18.3°C | |
| JUN 12 | 18.0°C | 18.3°C | |
| JUN 13 | 18.0°C | 18.2°C | |
| JUN 14 | 18.0°C | 18.2°C | |
| JUN 15 | 18.0°C | 18.2°C | |
| JUN 16 | 18.0°C | 18.2°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 | 0°C | 5°C | 9°C |
| February | 1°C | 5°C | 9°C |
| March | 3°C | 7°C | 11°C |
| April | 7°C | 11°C | 14°C |
| May | 9°C | 14°C | 18°C |
| June | 13°C | 18°C | 22°C |
| July | 16°C | 20°C | 25°C |
| August | 13°C | 18°C | 22°C |
| September | 11°C | 16°C | 20°C |
| October | 8°C | 11°C | 14°C |
| November | 4°C | 8°C | 11°C |
| December | 2°C | 6°C | 9°C |
Ondava River: Water Temperature by Location
Ondava River: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Source:
• location Low Beskids
Mouth:
• location Joins the Latorica to form the Bodrog
• coordinates 48.4547°N 21.8195°E
• elevation 100 m (330 ft)
Length 142 km (88 mi)
The Ondava River in eastern Slovakia is a medium-sized river that flows through lowlands and gently rolling hills. Its water temperature changes with the seasons — in spring it remains cool due to snowmelt and rainfall, while in summer it can warm up to around 18–22 °C on hot days. Shallow stretches and side arms of the river often heat up faster than the main channel, making them more pleasant for casual bathing.
Swimming in the Ondava is possible, though it is not a typical destination for organized swimming like lakes or reservoirs. Locals sometimes use calm sections of the river to cool down during summer, especially in places where access to the bank is easy and the current is gentle. Still, caution is advisable, since the water level and flow can change quickly after heavy rain, and some parts of the riverbed may be uneven.