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Târnava Mare River — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in the Târnava Mare River, trends, monthly ranges and the forecast for the coming days.

Târnava Mare River, Romania
Târnava Mare River, Romania © By Țetcu Mircea Rareș, CC BY-SA 2.5

Current Water Temperature

10.6°C
Today
11.1°C
Yesterday
12.8°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 Târnava Mare River today is 10.6°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used. 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 2412.7°C12.0°C
OCT 2511.8°C12.0°C
OCT 2611.0°C12.0°C
OCT 2711.0°C12.0°C
OCT 2811.1°C12.0°C
OCT 2911.1°C12.0°C
OCT 3010.1°C12.0°C
NOV 19.0°C10.5°C
NOV 29.0°C10.4°C
NOV 39.0°C10.4°C
NOV 49.0°C10.3°C
NOV 59.0°C10.2°C
NOV 69.0°C10.1°C
NOV 79.0°C10.0°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
January2°C6°C9°C
February2°C6°C9°C
March3°C7°C10°C
April7°C11°C14°C
May9°C13°C18°C
June14°C18°C23°C
July15°C19°C24°C
August15°C19°C24°C
September12°C17°C21°C
October9°C12°C15°C
November5°C9°C11°C
December2°C6°C9°C

Târnava Mare River: Water Temperature by Location

Târnava Mare River: Weather Forecast

October 31

° / °
slight rain
rain: 90% | wind:

November 1

° / °
fog
rain: 45% | wind:

November 2

° / °
slight rain
rain: 48% | wind:

November 3

° / °
slight rain
rain: 65% | wind:

November 4

° / °
slight rain
rain: 65% | wind:

Location & Local Information

Source Gurghiu Mountains
• elevation 1,455 m (4,774 ft)
Mouth Târnava
• location Blaj
• coordinates 46°10′16″N 23°53′31″E
Length 223 km (139 mi)

The Târnava Mare in central Romania is a medium‑sized Transylvanian river whose water temperature varies with the seasons and local weather. In winter the river can be very cold, often near 0–4 °C (32–39 °F), while spring typically brings cooler flows of roughly 6–12 °C (43–54 °F) as snowmelt and rains increase discharge. During summer the shallow stretches warm most, commonly ranging from about 18–24 °C (64–75 °F) on warm days, making the water most comfortable for brief swims. Autumn temperatures generally fall back to 10–16 °C (50–61 °F) as air temperatures cool and flows stabilise.

Swimming in the Târnava Mare is possible at many informal spots but is not universally regulated or supervised. Local conditions — including variable currents, submerged hazards, water quality influenced by agricultural runoff or sewage inputs, and sections flowing through private land — determine whether it is advisable to enter the water. Designated, monitored bathing areas are uncommon, so people typically swim at their own risk; checking local signage, recent water‑quality information and avoiding fast or murky stretches improves safety. In short, summer offers the most comfortable temperatures, but safety and legality depend on location and season.

Nearby Rivers

Frequently Asked Questions

What is the current water temperature in the Târnava Mare River?
Water Temperature in the Târnava Mare River today is 10.6°C.
What is the water temperature in the Târnava Mare River during the summer months?
The water temperature in the Târnava Mare River in summer fluctuates in the range of 14°C - 24°C.
Is it possible to swim in Târnava Mare (Romania) and what are the possibilities for this?
Swimming in the Târnava Mare is possible in some calm, shallow stretches, natural pools and small reservoirs, but opportunities are limited and seasonal, water quality and underwater hazards can vary, and it’s advisable to use designated bathing spots or municipal pools and to check local conditions and permissions beforehand.