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Zemplínska šírava Lake — Current Water Temperature, Annual Trends and Forecast

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

Morské oko Lake, Slovakia
Morské oko Lake, Slovakia © Milan Bališin, CC BY-SA 4.0

Current Water Temperature

20.8°C
Today
20.4°C
Yesterday
23.6°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 Zemplínska šírava Lake today is 20.8°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 July 31 to August 31

Table of Daily Sea Temperature Data

Date Current Average Forecast
AUG 2423.6°C21.2°C
AUG 2521.9°C21.2°C
AUG 2621.8°C21.2°C
AUG 2721.3°C21.2°C
AUG 2821.9°C21.2°C
AUG 2920.6°C21.2°C
AUG 3020.4°C21.2°C
AUG 3120.7°C21.2°C
SEP 119.0°C20.7°C
SEP 219.0°C20.6°C
SEP 319.0°C20.5°C
SEP 419.0°C20.4°C
SEP 519.0°C20.4°C
SEP 619.0°C20.3°C
SEP 719.0°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
January1°C6°C10°C
February1°C6°C10°C
March3°C8°C13°C
April7°C12°C17°C
May10°C16°C22°C
June16°C21°C26°C
July19°C24°C29°C
August16°C21°C27°C
September13°C19°C24°C
October9°C13°C17°C
November4°C9°C13°C
December2°C7°C11°C

Zemplínska šírava Lake: Water Temperature by Location

Zemplínska šírava Lake: Weather Forecast

September 1

° / °
slight rain
rain: 61% | wind:

September 2

° / °
overcast
rain: 2% | wind:

September 3

° / °
light drizzle
rain: 4% | wind:

September 4

° / °
overcast
rain: 6% | wind:

September 5

° / °
light drizzle
rain: 20% | wind:

September 6

° / °
light drizzle
rain: 6% | wind:

Location & Local Information

Zemplínska šírava is one of the largest lakes in Slovakia and is often referred to as the “Slovak sea.” Thanks to its size and relatively shallow depth in many areas, the water warms up quickly in summer. During the peak season from June to August, the temperature usually ranges between 22–26°C, making it one of the warmest large water bodies in the country. This creates ideal conditions for both casual bathing and longer swims.

The lake is very popular for recreational swimming, with several designated beaches and gently sloping shores that are suitable for families. Besides swimming, visitors often enjoy water sports such as sailing, windsurfing, and paddleboarding, which the wide surface of the lake allows. Zemplínska šírava combines the feel of a holiday resort with natural scenery, making it a top destination for summer bathing in eastern Slovakia.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Zemplínska šírava Lake?
Water Temperature in Zemplínska šírava Lake today is 20.8°C.
What is the water temperature in Zemplínska šírava Lake during the summer months?
The water temperature in Zemplínska šírava Lake in summer fluctuates in the range of 16°C - 29°C.
Is it possible to swim in Zemplínska šírava (Slovakia) and what are the possibilities for this?
Yes — Zemplínska šírava is a large reservoir where swimming is common and permitted at several public and private beaches and designated bathing areas with seasonal lifeguards and facilities, alongside opportunities for unsupervised swimming and a wide range of water sports and boat rentals, though water quality and safety can vary by spot and season so visitors should heed local advice.