Tundzha River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Tundzha River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Tundzha River today is 21.1°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 |
|---|---|---|---|
| SEP 13 | 22.8°C | 19.4°C | |
| SEP 14 | 23.4°C | 19.4°C | |
| SEP 15 | 23.0°C | 19.4°C | |
| SEP 16 | 22.3°C | 19.4°C | |
| SEP 17 | 21.9°C | 19.4°C | |
| SEP 18 | 21.7°C | 19.4°C | |
| SEP 19 | 21.6°C | 19.4°C | |
| SEP 20 | 21.2°C | 19.4°C | |
| SEP 21 | 19.4°C | 21.0°C | |
| SEP 22 | 19.4°C | 20.9°C | |
| SEP 23 | 19.4°C | 20.8°C | |
| SEP 24 | 19.4°C | 20.8°C | |
| SEP 25 | 19.4°C | 20.7°C | |
| SEP 26 | 19.4°C | 20.6°C | |
| SEP 27 | 19.4°C | 20.5°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 | 4°C | 8°C | 12°C |
| February | 4°C | 8°C | 12°C |
| March | 5°C | 10°C | 14°C |
| April | 8°C | 12°C | 16°C |
| May | 9°C | 15°C | 20°C |
| June | 14°C | 19°C | 25°C |
| July | 17°C | 22°C | 28°C |
| August | 17°C | 23°C | 29°C |
| September | 14°C | 19°C | 25°C |
| October | 12°C | 16°C | 18°C |
| November | 9°C | 12°C | 15°C |
| December | 4°C | 8°C | 12°C |
Tundzha River: Water Temperature by Location
Tundzha River: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Source:
• location east of Botev Peak, Balkan Mountains, Bulgaria
• coordinates 42°43′40″N 24°58′10″E
• elevation 2,083 m (6,834 ft)
Mouth:
• location Maritsa at Edirne, Turkey
• coordinates 41.6616°N 26.5622°E
Length 390 km (240 mi)
The Tundzha (Тунджа) is a river with varied thermal characteristics: its mountain headwaters stay cool year-round, while lower, lowland stretches warm considerably in summer. Typical seasonal surface temperatures range from close to freezing in winter (about 0–5 °C, 32–41 °F) through cool spring values (roughly 5–15 °C, 41–59 °F) as snowmelt and rains cool the flow, to summer highs commonly between 20–26 °C (68–79 °F) in calmer, shallow sections; on very hot days and in isolated pools temperatures can approach the upper 20s °C (around 80–83 °F). Autumn brings a gradual decline back toward spring values, with sudden drops possible after storms that increase flow and lower temperatures.
Swimming is possible in many informal locations along the Tundzha, especially in summer when water is warm and currents slacken in wider, shallower reaches, but it is not universally permitted. Local authorities may restrict access near dams, weirs, bridges, or water-intake sites, and water quality can vary with agricultural runoff or rainfall, so some stretches are unsuitable for bathing. Safety concerns—strong currents after rain, submerged hazards, and variable water quality—are the main reasons for prohibitions or advisories, so swimmers should follow posted signs and local guidance before entering the river.