Temperature:

Your Favorite Locations:

Your favorites list is empty.

Dehtář jezero — Current Water Temperature, Annual Trends and Forecast

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

Vodní nádrž Hněvkovice, Czech Republic
Vodní nádrž Hněvkovice, Czech Republic © Wakowlk, CC BY-SA 3.0

Current Water Temperature

14.3°C
Today
13.5°C
Yesterday
14.9°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 Dehtář jezero today is 14.3°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 9 to October 10

Table of Daily Sea Temperature Data

Date Current Average Forecast
OCT 314.9°C13.3°C
OCT 414.9°C13.3°C
OCT 514.6°C13.3°C
OCT 614.6°C13.3°C
OCT 714.3°C13.3°C
OCT 814.0°C13.3°C
OCT 913.5°C13.3°C
OCT 1014.0°C13.3°C
OCT 1113.3°C14.3°C
OCT 1213.3°C14.2°C
OCT 1313.3°C14.2°C
OCT 1413.3°C14.1°C
OCT 1513.3°C14.1°C
OCT 1613.3°C14.0°C
OCT 1713.3°C14.0°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
January1°C5°C9°C
February1°C5°C9°C
March3°C7°C11°C
April5°C10°C16°C
May8°C13°C21°C
June14°C19°C24°C
July16°C20°C24°C
August15°C20°C25°C
September11°C16°C21°C
October8°C13°C16°C
November2°C10°C16°C
December1°C5°C8°C

Dehtář jezero: Water Temperature by Location

Dehtář jezero: Weather Forecast

October 11

° / °
slight rain
rain: 16% | wind:

October 12

° / °
overcast
rain: 5% | wind:

October 13

° / °
slight rain
rain: 3% | wind:

October 14

° / °
slight rain
rain: 9% | wind:

October 15

° / °
fog
rain: 5% | wind:

Location & Local Information

Dehtář jezero is a medium-sized reservoir located near the city of České Budějovice in the South Bohemian Region of the Czech Republic. The lake is popular among locals for recreational activities, especially during the summer months. Water temperatures in Dehtář jezero typically rise to around 22–24 °C in July and August, creating comfortable conditions for swimming, wading, and casual water sports. The lake’s shores are accessible in several areas, allowing swimmers to enter the water easily, and the calm waters make it suitable for families and children.

Swimming at Dehtář jezero is mostly informal, with natural banks and some small sandy spots rather than fully developed beaches. Visitors often combine swimming with picnicking, sunbathing, or boating, as the lake is also used for small boats and fishing. The water is generally calm, which makes it ideal for those looking for a relaxed swimming experience without strong currents or waves.

Outside the peak summer season, water temperatures drop noticeably. In May or September, the lake usually stays around 15–17 °C, which is cool for long swims but still fine for brief dips or wading near the shore. Even when the water is colder, the lake remains a pleasant destination for nature walks, birdwatching, or simply enjoying the scenic surroundings of South Bohemia.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Dehtář jezero?
Water Temperature in Dehtář jezero today is 14.3°C.
What is the water temperature in Dehtář jezero during the summer months?
The water temperature in Dehtář jezero in summer fluctuates in the range of 14°C - 25°C.
Is it possible to swim in Dehtář jezero (Czech Republic) and what are the possibilities for this?
Yes — visitors can swim in the Dehtář reservoir, either from accessible shorelines and small designated bathing spots or at nearby beaches and campsites that offer basic facilities and equipment rentals for paddling, rowing and boat access, while observing local rules.