Czech Republic — Water Temperature in Lakes and Rivers

Find current water temperatures in lakes and rivers across Czech Republic. See today’s measurements and typical seasonal changes for inland swimming and recreation. We find every place where you can swim and show you the water temperature there today and throughout the year.

Water Temperature in Lakes and Rivers

32°F

minimum

34°F

average

37°F

maximum

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Water Temperature and Swimming Overview

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Water Temperature Trends

The Czech Republic’s inland location means its lakes, ponds and rivers follow a clear seasonal pattern in water temperature. In summer many still and slow-moving waters warm to roughly 18–25 °C (64–77 °F), with shallow farm ponds and sheltered reservoirs occasionally reaching 25–28 °C (77–82 °F) during heat waves. Rivers tend to stay cooler because of flow and depth; typical summer river temperatures are about 12–20 °C (54–68 °F), though warmer stretches can occur in slow sections or downstream of reservoirs. Spring temperatures commonly range from around 4–12 °C (39–54 °F) as snowmelt and cool air keep waters cold, while autumn sees cooling to roughly 8–14 °C (46–57 °F) before many surfaces freeze or approach 0–4 °C (32–39 °F) in winter. In winter most natural waters are near freezing and frequently ice-covered in the colder months.

Swimming Conditions

Swimming is widely practiced in designated beaches, inland reservoirs and supervised lakes during the warmer months, and public bathing is generally allowed where signs mark swimming zones and water quality is monitored. Restrictions are put in place where currents, low temperatures, pollution, drinking-water protection or cyanobacterial blooms present hazards, and some reservoirs prohibit swimming for safety or water-supply reasons. Lifeguarded areas offer the safest options in summer, while winter swimming is only common among experienced groups using safety measures. As with any inland swimming, people should check local advisories for temperature, quality and official permissions before entering the water.