Brno Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Brno Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Brno Reservoir today is 18.4°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 3 | 17.7°C | 18.5°C | |
| JUN 4 | 18.1°C | 18.5°C | |
| JUN 5 | 17.5°C | 18.5°C | |
| JUN 6 | 17.7°C | 18.5°C | |
| JUN 7 | 17.3°C | 18.5°C | |
| JUN 8 | 17.6°C | 18.5°C | |
| JUN 10 | 18.4°C | 18.5°C | |
| JUN 11 | 18.5°C | 18.4°C | |
| JUN 12 | 18.5°C | 18.4°C | |
| JUN 13 | 18.5°C | 18.4°C | |
| JUN 14 | 18.5°C | 18.4°C | |
| JUN 15 | 18.5°C | 18.4°C | |
| JUN 16 | 18.5°C | 18.4°C | |
| JUN 17 | 18.5°C | 18.4°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 | 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 | 22°C |
| July | 17°C | 20°C | 24°C |
| August | 16°C | 20°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 | 2°C | 6°C | 8°C |
Brno Reservoir: Water Temperature by Location
Brno Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Brněnská přehrada, also known as the Brno Reservoir, is one of the most popular summer swimming spots in South Moravia. Because of its relatively shallow sections and exposure to plenty of sunshine, the water warms up well as the season progresses. In mid-summer, temperatures often reach 23–25 °C, which feels pleasantly warm for long swims. At the beginning and end of the season, the water can be noticeably cooler, especially after rainy or windy weather, but overall the reservoir offers comfortable bathing conditions for a large part of the summer.
Swimming at Brněnská přehrada is supported by well-maintained beaches, grassy areas, and facilities that make it suitable for families, casual bathers, and sports swimmers alike. The broad surface of the lake allows plenty of space for recreational swimming as well as boating and other water sports. On hot days the combination of warm water, accessible shores, and lively atmosphere makes the reservoir one of the key places for locals and visitors to enjoy open-air swimming in the Brno region.