Karlovy Vary — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Karlovy Vary, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Karlovy Vary today is 20.7°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 |
|---|---|---|---|
| JUN 23 | 19.7°C | 17.5°C | |
| JUN 24 | 19.3°C | 17.5°C | |
| JUN 25 | 19.3°C | 17.5°C | |
| JUN 26 | 19.7°C | 17.5°C | |
| JUN 27 | 20.1°C | 17.5°C | |
| JUN 28 | 20.4°C | 17.5°C | |
| JUN 29 | 21.4°C | 17.5°C | |
| JUN 30 | 21.6°C | 17.5°C | |
| JUL 1 | 19.0°C | 20.6°C | |
| JUL 2 | 19.0°C | 20.5°C | |
| JUL 3 | 19.0°C | 20.4°C | |
| JUL 4 | 19.0°C | 20.4°C | |
| JUL 5 | 19.0°C | 20.3°C | |
| JUL 6 | 19.0°C | 20.2°C | |
| JUL 7 | 19.0°C | 20.1°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 | 0°C | 5°C | 9°C |
| March | 2°C | 7°C | 11°C |
| April | 4°C | 10°C | 16°C |
| May | 8°C | 13°C | 21°C |
| June | 13°C | 18°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 | 2°C | 10°C | 16°C |
| December | 2°C | 5°C | 8°C |
Karlovy Vary: Weather Forecast
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July 6
Location & Local Information
In Karlovy Vary, the Ohře River flows gently through the city, adding a scenic element to the historic spa town. Because the river collects water from upstream mountain streams, it tends to stay relatively cool throughout the year. In late spring, water temperatures are typically around 15–17 °C, while in the warmest weeks of July and August, they may rise to 19–21 °C. Even on hot summer days, the water rarely becomes truly warm, which gives it a refreshing quality for those who enjoy natural river swimming.
Swimming in the Ohře directly within Karlovy Vary is limited, as the riverbanks are mostly urbanized and not officially designated for bathing. However, there are a few calmer sections along the edges where locals occasionally take quick dips during summer heatwaves. The steady flow keeps the water clean, but swimmers should be mindful of the current and choose shallow, safe areas.
For those seeking a more comfortable swimming experience, many visitors prefer nearby ponds or small recreational lakes outside the city, where the water is warmer and the shoreline more accessible. Nevertheless, for people who enjoy natural, refreshing river water and a scenic backdrop, the Ohře in Karlovy Vary provides a unique, if cool, summer experience.