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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.

Tundzha River, Bulgaria
Tundzha River, Bulgaria © By Staryyeyes, CC BY-SA 4.0

Current Water Temperature

12.4°C
Today
12.9°C
Yesterday
14.0°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in the Tundzha River today is 12.4°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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

From September 30 to October 31

Table of Daily Sea Temperature Data

Date Current Average Forecast
OCT 2414.0°C16.0°C
OCT 2513.8°C16.0°C
OCT 2613.8°C16.0°C
OCT 2713.5°C16.0°C
OCT 2813.4°C16.0°C
OCT 2913.0°C16.0°C
OCT 3012.9°C16.0°C
OCT 3112.4°C16.0°C
NOV 112.0°C12.4°C
NOV 212.0°C12.4°C
NOV 312.0°C12.3°C
NOV 412.0°C12.3°C
NOV 512.0°C12.3°C
NOV 612.0°C12.3°C
NOV 712.0°C12.3°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
January4°C8°C12°C
February4°C8°C12°C
March5°C10°C14°C
April8°C12°C16°C
May9°C15°C20°C
June14°C19°C25°C
July17°C22°C28°C
August17°C23°C29°C
September14°C19°C25°C
October12°C16°C18°C
November9°C12°C15°C
December4°C8°C12°C

Tundzha River: Water Temperature by Location

Tundzha River: Weather Forecast

November 1

° / °
slight rain showers
rain: 92% | wind:

November 2

° / °
slight rain showers
rain: 95% | wind:

November 3

° / °
slight rain showers
rain: 89% | wind:

November 4

° / °
slight rain showers
rain: 78% | wind:

November 5

° / °
overcast
rain: 50% | wind:

November 6

° / °
fog
rain: 5% | wind:

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.

Nearby Rivers

Frequently Asked Questions

What is the current water temperature in the Tundzha River?
Water Temperature in the Tundzha River today is 12.4°C.
What is the water temperature in the Tundzha River during the summer months?
The water temperature in the Tundzha River in summer fluctuates in the range of 14°C - 29°C.
Is it possible to swim in Tundzha (Bulgaria) and what are the possibilities for this?
Yes — you can swim in parts of the Tundzha River, especially in calmer upper and middle reaches, side pools and quiet bends, and enjoy activities like paddling or floating, but water quality and currents vary by location so check local conditions, avoid sections near urban or industrial discharge and after heavy rain, and take usual safety precautions where there are no lifeguards.