Vacha Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Vacha Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Vacha Reservoir today is 21.2°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 3 | 19.7°C | 21.0°C | |
| JUN 4 | 19.8°C | 21.0°C | |
| JUN 5 | 19.8°C | 21.0°C | |
| JUN 6 | 20.1°C | 21.0°C | |
| JUN 7 | 20.1°C | 21.0°C | |
| JUN 8 | 20.1°C | 21.0°C | |
| JUN 10 | 21.2°C | 21.0°C | |
| JUN 11 | 21.0°C | 21.2°C | |
| JUN 12 | 21.0°C | 21.2°C | |
| JUN 13 | 21.0°C | 21.2°C | |
| JUN 14 | 21.0°C | 21.2°C | |
| JUN 15 | 21.0°C | 21.2°C | |
| JUN 16 | 21.0°C | 21.1°C | |
| JUN 17 | 21.0°C | 21.1°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 | 3°C | 8°C | 11°C |
| February | 4°C | 8°C | 11°C |
| March | 5°C | 10°C | 14°C |
| April | 8°C | 13°C | 18°C |
| May | 9°C | 17°C | 24°C |
| June | 16°C | 21°C | 26°C |
| July | 18°C | 23°C | 28°C |
| August | 19°C | 24°C | 29°C |
| September | 16°C | 21°C | 26°C |
| October | 12°C | 17°C | 20°C |
| November | 9°C | 13°C | 17°C |
| December | 3°C | 8°C | 11°C |
Vacha Reservoir: Water Temperature by Location
Vacha Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Vacha Reservoir (Язовир Въча) in southern Bulgaria typically shows pronounced seasonal shifts in water temperature. In spring the surface waters commonly range from about 5–15 °C (41–59 °F) as snowmelt and cool river inflow dominate; in summer sheltered areas and the upper layer can warm to roughly 20–25 °C (68–77 °F), sometimes a little higher in heatwaves. During autumn temperatures usually fall to about 10–18 °C (50–64 °F) as cooling begins, while winter surface temperatures can approach freezing, roughly 0–4 °C (32–39 °F), and parts of the reservoir may ice over in cold spells. Deeper zones remain colder year-round, so overall water can feel much colder than the surface readings suggest.
Swimming opportunities depend on location and local rules. Because Vacha is an operational reservoir used for water supply and hydroelectric management, many areas near the dam, intakes and working infrastructure are officially restricted for safety and water-protection reasons; sudden releases, currents and water-quality regulations are primary concerns. Nevertheless, in summer people often swim in quieter coves and bays where bathing is tolerated and surface temperatures are most comfortable. Visitors should heed posted signs, follow municipal regulations and be cautious of submerged hazards, changing water levels and cold deeper water even on warm days.