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Little Danube River — Current Water Temperature, Annual Trends and Forecast

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

Little Danube River, Slovakia
Little Danube River, Slovakia © By Plepo, Public domain

Current Water Temperature

24.2°C
Today
24.2°C
Yesterday
23.0°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 Little Danube River today is 24.2°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 June 21 to July 22

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUL 1523.0°C20.6°C
JUL 1624.2°C20.6°C
JUL 1724.7°C20.6°C
JUL 1824.7°C20.6°C
JUL 1924.8°C20.6°C
JUL 2025.0°C20.6°C
JUL 2124.2°C20.6°C
JUL 2224.2°C20.6°C
JUL 2320.6°C24.0°C
JUL 2420.6°C23.8°C
JUL 2520.6°C23.7°C
JUL 2620.6°C23.5°C
JUL 2720.6°C23.3°C
JUL 2820.6°C23.1°C
JUL 2920.6°C22.9°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
January0°C5°C9°C
February1°C5°C9°C
March4°C8°C11°C
April7°C11°C14°C
May9°C14°C20°C
June13°C19°C25°C
July16°C21°C26°C
August13°C18°C22°C
September11°C16°C20°C
October8°C11°C14°C
November4°C8°C11°C
December2°C6°C9°C

Little Danube River: Water Temperature by Location

Little Danube River: Weather Forecast

July 23

° / °
overcast
rain: 25% | wind:

July 24

° / °
overcast
rain: 5% | wind:

July 25

° / °
overcast
rain: 0% | wind:

July 26

° / °
overcast
rain: 19% | wind:

Location & Local Information

Mouth Váh
• coordinates 47°55′44″N 18°00′04″E
Length 137 km (85 mi)

The Little Danube (Malý Dunaj) is a side arm of the Danube that branches off near Bratislava and flows through the lowlands of western Slovakia. Thanks to its calmer flow and shallower sections compared to the main Danube, the water here warms up relatively well in summer. In spring, the temperature is still cool, often under 15°C, but by July and August it can reach 22–25°C in many spots, especially in slower bends and wider stretches. This makes it more comfortable for swimming than the main Danube, which tends to stay colder and more turbulent.

Swimming in the Little Danube is popular in natural settings, particularly in areas with sandy or grassy banks where entry into the water is easy. Locals and visitors use it not only for bathing but also for canoeing and relaxing by the water. While it doesn’t have large official beaches, it offers many natural places for a refreshing dip, especially on hot summer days.

Nearby Rivers

Frequently Asked Questions

What is the current water temperature in the Little Danube River?
Water Temperature in the Little Danube River today is 24.2°C.
What is the water temperature in the Little Danube River during the summer months?
The water temperature in the Little Danube River in summer fluctuates in the range of 13°C - 26°C.
Is it possible to swim in Little Danube (Slovakia) and what are the possibilities for this?
Yes; you can swim in parts of the Little Danube—people bathe from natural banks, oxbow lakes and small gravel or sandy beaches and at a few managed recreation spots—but water quality and safety vary by location and season, lifeguards are uncommon and boat traffic or currents can be hazards, so check local information and signage before entering.