Kyustendil — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Kyustendil, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Kyustendil today is 20.9°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 | 19.6°C | 19.0°C | |
| JUN 4 | 19.6°C | 19.0°C | |
| JUN 5 | 19.5°C | 19.0°C | |
| JUN 6 | 19.7°C | 19.0°C | |
| JUN 7 | 19.8°C | 19.0°C | |
| JUN 8 | 19.8°C | 19.0°C | |
| JUN 10 | 20.9°C | 19.0°C | |
| JUN 11 | 19.0°C | 20.8°C | |
| JUN 12 | 19.0°C | 20.7°C | |
| JUN 13 | 19.0°C | 20.6°C | |
| JUN 14 | 19.0°C | 20.5°C | |
| JUN 15 | 19.0°C | 20.4°C | |
| JUN 16 | 19.0°C | 20.3°C | |
| JUN 17 | 19.0°C | 20.2°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 | 12°C |
| February | 4°C | 8°C | 12°C |
| March | 6°C | 10°C | 14°C |
| April | 7°C | 12°C | 16°C |
| May | 10°C | 16°C | 21°C |
| June | 14°C | 19°C | 24°C |
| July | 17°C | 22°C | 27°C |
| August | 17°C | 22°C | 27°C |
| September | 14°C | 19°C | 24°C |
| October | 12°C | 16°C | 19°C |
| November | 8°C | 12°C | 15°C |
| December | 4°C | 8°C | 12°C |
Kyustendil: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Kyustendil sits in a river valley in western Bulgaria, with the Kyustendilska Bistritsa and a number of small ponds and reservoirs defining local inland waters. Seasonal water temperatures in those rivers and small lakes vary considerably. In winter the flowing water and shallow reservoirs often hover near freezing, roughly 0–6 °C (32–43 °F). In spring, as air temperatures rise, river and pond temperatures commonly reach about 6–14 °C (43–57 °F). During the warmest weeks of summer, shallow lakes and slow stretches of river can warm to the mid‑teens up to the mid‑20s Celsius — typically around 16–26 °C (61–79 °F) and sometimes a little higher in very calm, sun‑exposed ponds. In autumn the water cools again to roughly 10–16 °C (50–61 °F) before winter sets in.
Swimming in Kyustendil’s natural rivers and reservoirs is possible but not widespread or formally organized. There are few official, supervised bathing areas on these inland waters; many spots lack lifeguards, marked zones, and regular water‑quality monitoring, and water quality can vary with runoff and seasonal low flows. For safety reasons some reservoirs prohibit swimming, and current or depth can be hazardous after rain. As a result, residents more often use managed spa pools or designated facilities for bathing, while those who swim in rivers or ponds generally do so informally and with caution.