Osam River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Osam River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Osam River today is 17.3°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 |
|---|---|---|---|
| OCT 4 | 18.4°C | 14.0°C | |
| OCT 5 | 18.2°C | 14.0°C | |
| OCT 6 | 16.8°C | 14.0°C | |
| OCT 7 | 17.2°C | 14.0°C | |
| OCT 8 | 17.4°C | 14.0°C | |
| OCT 9 | 17.3°C | 14.0°C | |
| OCT 10 | 17.4°C | 14.0°C | |
| OCT 12 | 14.0°C | 17.1°C | |
| OCT 13 | 14.0°C | 17.0°C | |
| OCT 14 | 14.0°C | 16.8°C | |
| OCT 15 | 14.0°C | 16.6°C | |
| OCT 16 | 14.0°C | 16.5°C | |
| OCT 17 | 14.0°C | 16.3°C | |
| OCT 18 | 14.0°C | 16.1°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 | 7°C | 10°C |
| February | 3°C | 7°C | 10°C |
| March | 5°C | 9°C | 13°C |
| April | 9°C | 13°C | 16°C |
| May | 9°C | 14°C | 20°C |
| June | 13°C | 19°C | 25°C |
| July | 14°C | 21°C | 28°C |
| August | 15°C | 21°C | 28°C |
| September | 13°C | 19°C | 25°C |
| October | 10°C | 14°C | 17°C |
| November | 6°C | 10°C | 14°C |
| December | 4°C | 8°C | 10°C |
Osam River: Water Temperature by Location
Osam River: Weather Forecast
October 11
October 12
October 13
October 14
October 15
Location & Local Information
Source:
• location SW of Levski Peak, Balkan Mountains
• coordinates 42°43′10.92″N 24°46′48″E
• elevation 1,880 m (6,170 ft)
Mouth:
• location Danube
• coordinates 43°42′5.04″N 24°51′19.08″E
• elevation 22 m (72 ft)
Length 314 km (195 mi)
The Osam River (Bulgarian: Осъм) flows from the Balkan Mountains to the Danubian plain, and its water temperature varies strongly with season and altitude. In winter the river is cold, typically around 0–4 °C (32–39 °F), while spring brings gradual warming to roughly 4–12 °C (39–54 °F). Summer temperatures differ between mountain and lowland reaches: upper, shaded sections often stay around 10–18 °C (50–64 °F), whereas slower lowland stretches can warm to about 18–26 °C (64–79 °F) on hot days. In autumn water cools again, commonly falling into the 8–15 °C (46–59 °F) range before winter sets in. Local weather, depth, flow rate and shade all influence these ranges from year to year.
Swimming in the Osam is possible in many places, particularly in summer when lowland reaches reach comfortable temperatures, but it is not uniformly regulated or supervised. Because the river is public water, bathing is generally allowed, yet safety and water-quality considerations often determine whether a given spot is suitable: fast currents, submerged hazards, cold mountain water, and occasional pollution near urban areas can make swimming unsafe or inadvisable. There are few lifeguarded areas, so local signage, water clarity, and recent conditions should be checked and caution exercised when entering the river.