Černé jezero — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Černé jezero, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Černé jezero today is 20.6°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 |
|---|---|---|---|
| AUG 4 | 20.4°C | 18.0°C | |
| AUG 5 | 22.5°C | 18.0°C | |
| AUG 6 | 22.7°C | 18.0°C | |
| AUG 7 | 22.7°C | 18.0°C | |
| AUG 8 | 20.9°C | 18.0°C | |
| AUG 9 | 20.1°C | 18.0°C | |
| AUG 10 | 20.1°C | 18.0°C | |
| AUG 11 | 20.6°C | 18.0°C | |
| AUG 12 | 18.0°C | 20.5°C | |
| AUG 13 | 18.0°C | 20.3°C | |
| AUG 14 | 18.0°C | 20.2°C | |
| AUG 15 | 18.0°C | 20.1°C | |
| AUG 16 | 18.0°C | 20.0°C | |
| AUG 17 | 18.0°C | 19.8°C | |
| AUG 18 | 18.0°C | 19.7°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 | 0°C | 5°C | 9°C |
| February | 0°C | 5°C | 9°C |
| March | 1°C | 6°C | 11°C |
| April | 3°C | 10°C | 16°C |
| May | 8°C | 13°C | 21°C |
| June | 11°C | 17°C | 22°C |
| July | 14°C | 19°C | 24°C |
| August | 13°C | 18°C | 23°C |
| September | 10°C | 15°C | 19°C |
| October | 7°C | 12°C | 16°C |
| November | 0°C | 9°C | 16°C |
| December | 0°C | 4°C | 8°C |
Černé jezero: Water Temperature by Location
Černé jezero: Weather Forecast
August 12
August 13
August 14
August 15
August 16
Location & Local Information
Černé jezero, the largest and deepest glacial lake in the Czech Republic, is located in the Šumava National Park near the border with Germany. Due to its high elevation and depth, the water remains very cold even during summer, generally ranging from 8–12 °C. This makes swimming quite challenging for most visitors, and the lake is primarily visited for its scenic beauty rather than recreational bathing. Even brief dips can feel invigorating but are usually only attempted by those accustomed to cold water.
The lake is surrounded by steep, forested slopes and natural rocky shores, with no designated swimming areas or lifeguards. Access to the water is limited, and caution is necessary due to uneven terrain and the cold temperatures. Shallow edges are scarce, so most visitors experience the lake visually or by walking along the trails rather than entering the water.
Černé jezero is far more popular for hiking, nature photography, and enjoying the dramatic scenery of the Šumava mountains. Its pristine environment, combined with the striking contrast of dark waters against surrounding forests, makes it a remarkable destination for nature lovers. Swimming is minimal and typically reserved for short, adventurous dips, while the lake’s main appeal lies in its tranquil and picturesque setting.