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Lake Kočevje — Current Water Temperature, Annual Trends and Forecast

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

Lake Cerknica, Slovenia
Lake Cerknica, Slovenia © By JožeStražišar, CC BY 4.0

Current Water Temperature

19.8°C
Today
20.0°C
Yesterday
20.0°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 Lake Kočevje today is 19.8°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 1520.0°C21.0°C
JUL 1620.8°C21.0°C
JUL 1720.9°C21.0°C
JUL 1821.4°C21.0°C
JUL 1921.2°C21.0°C
JUL 2021.1°C21.0°C
JUL 2120.0°C21.0°C
JUL 2219.8°C21.0°C
JUL 2321.0°C19.9°C
JUL 2421.0°C19.9°C
JUL 2521.0°C20.0°C
JUL 2621.0°C20.0°C
JUL 2721.0°C20.1°C
JUL 2821.0°C20.2°C
JUL 2921.0°C20.2°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
January3°C8°C11°C
February3°C7°C10°C
March6°C10°C13°C
April7°C11°C15°C
May9°C14°C20°C
June13°C19°C24°C
July16°C21°C26°C
August16°C21°C26°C
September12°C18°C23°C
October10°C14°C18°C
November5°C10°C13°C
December3°C8°C11°C

Lake Kočevje: Water Temperature by Location

Lake Kočevje: Weather Forecast

July 22

° / °
overcast
rain: 0% | wind:

July 23

° / °
slight thunderstorm
rain: 55% | wind:

July 24

° / °
overcast
rain: 3% | wind:

July 25

° / °
overcast
rain: 14% | wind:

July 26

° / °
slight rain showers
rain: 88% | wind:

July 27

° / °
slight rain showers
rain: 75% | wind:

Location & Local Information

Lake Kočevje, also known as Rudniško jezero, is a small artificial lake in southern Slovenia, surrounded by forests and natural scenery. Its water is relatively shallow, which allows it to warm up during the summer months. Typically, from June to August, the surface temperature reaches 20–24°C, making it comfortable for swimming. In spring and autumn, the water is cooler, usually between 12–16°C, and in winter it can drop close to 4–6°C.

Swimming in Lake Kočevje is popular during the warmer months, especially among families and local visitors. The lake has calm water and small beaches, so it is ideal for recreational swimming and relaxing by the shore. It is less crowded than larger lakes, offering a quiet and peaceful environment.

Outside of summer, swimming is uncommon due to the lower water temperature, but the lake remains attractive for walks, picnics, and enjoying nature. Even a short dip in early summer or late spring can be refreshing, though the water can still feel quite cool.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lake Kočevje?
Water Temperature in Lake Kočevje today is 19.8°C.
What is the water temperature in Lake Kočevje during the summer months?
The water temperature in Lake Kočevje in summer fluctuates in the range of 13°C - 26°C.
Is it possible to swim in Lake Kočevje (Slovenia) and what are the possibilities for this?
Yes — Lake Kočevje can be used for swimming, with options ranging from bathing at designated shores and informal wild-swim spots to using summer beach areas and water-sports zones where basic facilities may be available, though conditions, amenities and water-quality advisories vary by season so visitors should follow local rules and posted information.