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Sava River — Current Water Temperature, Annual Trends and Forecast

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

Sava River, Slovenia
Sava River, Slovenia © By Petar Milošević, CC BY-SA 4.0

Current Water Temperature

15.2°C
Today
15.1°C
Yesterday
14.2°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 Sava River today is 15.2°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

From August 23 to September 23

Table of Daily Sea Temperature Data

Date Current Average Forecast
SEP 1615.4°C17.0°C
SEP 1715.5°C17.0°C
SEP 1815.9°C17.0°C
SEP 1915.0°C17.0°C
SEP 2015.4°C17.0°C
SEP 2115.1°C17.0°C
SEP 2216.1°C17.0°C
SEP 2417.0°C15.3°C
SEP 2517.0°C15.4°C
SEP 2617.0°C15.5°C
SEP 2717.0°C15.6°C
SEP 2817.0°C15.7°C
SEP 2917.0°C15.7°C
SEP 3017.0°C15.8°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
March4°C8°C10°C
April6°C10°C14°C
May8°C13°C18°C
June11°C18°C23°C
July15°C19°C24°C
August15°C19°C24°C
September12°C17°C21°C
October9°C12°C15°C
November4°C8°C11°C
December2°C6°C9°C

Sava River: Water Temperature by Location

Sava River: Weather Forecast

September 23

° / °
fog
rain: 0% | wind:

September 24

° / °
moderate rain showers
rain: 38% | wind:

September 25

° / °
slight rain showers
rain: 25% | wind:

September 26

° / °
fog
rain: 0% | wind:

September 27

° / °
fog
rain: 0% | wind:

September 28

° / °
fog
rain: 0% | wind:

Location & Local Information

Source Zelenci
• location Kranjska Gora, Slovenia
• coordinates 46°29′31″N 13°44′16″E
• elevation 833 m (2,733 ft)
Mouth Danube
• location Belgrade, Serbia
• coordinates 44°49′27″N 20°26′38″E
• elevation 68 m (223 ft)
Length 992 km (616 mi)

The Sava River is the longest river flowing through Slovenia, running from the northwest near the Julian Alps and continuing toward Croatia. Its water temperature varies greatly depending on the season and location. In summer, near lower stretches in Slovenia, the surface temperature can reach 20–24°C, making some calmer sections suitable for swimming. In spring and autumn, the water is cooler, typically around 12–16°C, while in winter it can drop to 4–6°C or lower in certain areas.

Swimming in the Sava is possible in some sections, especially where the current is mild and the banks are accessible. However, because the river is flowing, the water can be unpredictable, and some parts have strong currents, making swimming unsafe. Popular spots for a dip are usually small beaches or areas with slower water near towns and recreational facilities.

Outside of summer, swimming is less common due to cooler temperatures and stronger currents. People often enjoy walking, cycling along the riverbanks, or picnicking by the river rather than bathing. Even a short dip in summer can be refreshing, especially on hot days.

Nearby Rivers

Frequently Asked Questions

What is the current water temperature in the Sava River?
Water Temperature in the Sava River today is 15.2°C.
What is the water temperature in the Sava River during the summer months?
The water temperature in the Sava River in summer fluctuates in the range of 11°C - 24°C.
Is it possible to swim in Sava (Slovenia) and what are the possibilities for this?
Yes — you can swim in parts of the Sava in Slovenia, especially in calmer stretches, designated bathing spots and river beaches near towns, or as wild swimming combined with organized water sports like kayaking and rafting, but conditions and water quality vary so always heed local notices, check seasonal water-quality reports and be cautious of currents, boat traffic and access.