Sĺňava Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Sĺňava Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Sĺňava Reservoir today is 19.3°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 3 | 18.8°C | 21.0°C | |
| JUN 4 | 19.1°C | 21.0°C | |
| JUN 5 | 18.7°C | 21.0°C | |
| JUN 6 | 18.7°C | 21.0°C | |
| JUN 7 | 18.2°C | 21.0°C | |
| JUN 8 | 18.6°C | 21.0°C | |
| JUN 10 | 19.3°C | 21.0°C | |
| JUN 11 | 21.0°C | 19.4°C | |
| JUN 12 | 21.0°C | 19.5°C | |
| JUN 13 | 21.0°C | 19.6°C | |
| JUN 14 | 21.0°C | 19.6°C | |
| JUN 15 | 21.0°C | 19.7°C | |
| JUN 16 | 21.0°C | 19.8°C | |
| JUN 17 | 21.0°C | 19.9°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 | 6°C | 10°C |
| February | 2°C | 6°C | 10°C |
| March | 4°C | 9°C | 13°C |
| April | 8°C | 13°C | 17°C |
| May | 11°C | 17°C | 22°C |
| June | 16°C | 21°C | 26°C |
| July | 19°C | 24°C | 29°C |
| August | 16°C | 21°C | 26°C |
| September | 13°C | 19°C | 24°C |
| October | 9°C | 13°C | 17°C |
| November | 4°C | 9°C | 13°C |
| December | 2°C | 7°C | 11°C |
Sĺňava Reservoir: Water Temperature by Location
Sĺňava Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
The Sĺňava Reservoir near Piešťany is a well-known water area that attracts visitors especially during the summer months. Thanks to its relatively shallow depth and broad surface, the water warms up quite quickly. In June the temperature usually reaches 20–22 °C, while in the height of summer it often climbs to 24–26 °C, making it pleasant for swimming and other water activities. On particularly hot days, the surface water can feel even warmer, which adds to its popularity.
Swimming in the reservoir is possible at several designated spots, and the atmosphere is complemented by opportunities for sailing, paddleboarding, and other sports. While parts of the shoreline are adapted for recreation, visitors can also find quieter areas for simply relaxing by the water. The combination of comfortable water temperatures and a lively summer setting makes Sĺňava a favorite choice for those looking to cool down in western Slovakia.