Rožmberk jezero — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Rožmberk jezero, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Rožmberk jezero today is 21.1°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 |
|---|---|---|---|
| JUL 14 | 19.7°C | 20.0°C | |
| JUL 15 | 22.2°C | 20.0°C | |
| JUL 16 | 22.6°C | 20.0°C | |
| JUL 17 | 22.9°C | 20.0°C | |
| JUL 18 | 23.4°C | 20.0°C | |
| JUL 19 | 23.4°C | 20.0°C | |
| JUL 20 | 22.8°C | 20.0°C | |
| JUL 21 | 21.5°C | 20.0°C | |
| JUL 22 | 20.0°C | 21.0°C | |
| JUL 23 | 20.0°C | 21.0°C | |
| JUL 24 | 20.0°C | 20.9°C | |
| JUL 25 | 20.0°C | 20.9°C | |
| JUL 26 | 20.0°C | 20.8°C | |
| JUL 27 | 20.0°C | 20.8°C | |
| JUL 28 | 20.0°C | 20.7°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 | 1°C | 5°C | 9°C |
| February | 1°C | 5°C | 9°C |
| March | 3°C | 7°C | 11°C |
| April | 5°C | 10°C | 16°C |
| May | 8°C | 13°C | 21°C |
| June | 14°C | 19°C | 25°C |
| July | 16°C | 20°C | 24°C |
| August | 15°C | 19°C | 23°C |
| September | 11°C | 18°C | 19°C |
| October | 8°C | 13°C | 16°C |
| November | 3°C | 8°C | 16°C |
| December | 1°C | 5°C | 8°C |
Rožmberk jezero: Water Temperature by Location
Rožmberk jezero: Weather Forecast
July 22
July 23
July 24
July 25
July 26
July 27
Location & Local Information
Rožmberk jezero is the largest pond in the Czech Republic, located in the South Bohemian Region near the town of Třeboň. Despite its size, it is relatively shallow, which allows the water to warm up during the summer months. In July and August, water temperatures typically reach around 22–24 °C, creating comfortable conditions for swimming, wading, and light recreational water activities. Its calm and expansive waters make it a popular spot for families and those looking for a peaceful environment to enjoy the water.
Swimming at Rožmberk jezero is mostly informal, as there are natural banks and a few designated areas rather than fully developed beaches. Visitors often combine swimming with other leisure activities, such as picnics, sunbathing, and boating. The calm waters are ideal for children and less experienced swimmers, and the surrounding landscape of meadows and forests adds to the lake’s serene atmosphere.
Outside the peak summer months, water temperatures drop noticeably. In May or September, the pond usually remains around 15–17 °C, which is too cool for long swims but still allows for brief dips or wading near the shore. Even when the water is cold, Rožmberk jezero remains a beautiful destination for walking, birdwatching, and enjoying the natural charm of the Třeboň region.