Hesse

Hesse, Germany © By Frank Behnsen

Hesse Water Temperature

This page provides detailed information about the water temperature in lakes and rivers in Hesse, Germany. All cities and resorts on the coast of lakes and along the rivers. The range of sea temperatures for today. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature in Hesse: General Trends and Swimming Opportunities

Original name of the region: Hessen

Hesse, located in central Germany, is home to numerous lakes and rivers, including the Edersee, Lake Niederwald, and sections of the Rhine, Main, and Lahn rivers. Due to the region’s temperate climate, water temperatures in these bodies vary significantly throughout the year. In winter, temperatures in most lakes and rivers drop to around 2–5°C (36–41°F), making swimming uncomfortable except for winter swimming enthusiasts. By late spring, as temperatures rise, the water gradually warms to around 10–15°C (50–59°F), making it more suitable for water activities.

During the summer months, particularly from June to August, many lakes in Hesse reach comfortable swimming temperatures of 18–24°C (64–75°F), depending on the weather and depth of the water. The Edersee, one of the largest reservoirs in Germany, typically reaches around 20–23°C (68–73°F) in peak summer, making it a popular spot for swimming, boating, and other water sports. Smaller lakes, such as Lake Niederwald or the Langener Waldsee near Frankfurt, can warm up even more, occasionally exceeding 25°C (77°F) during heatwaves. Rivers like the Lahn and Main are generally cooler, often ranging between 16–20°C (61–68°F) in summer due to continuous water flow.

As autumn arrives, water temperatures begin to drop, falling below 15°C (59°F) by October and continuing to cool as winter approaches. While outdoor swimming is most enjoyable from June to early September, some lakes, especially those with designated swimming areas, remain accessible for those who enjoy cold-water swimming. With a mix of large reservoirs, natural lakes, and scenic rivers, Hesse provides various options for water activities throughout the warmer months.

Geographical Location of Hesse

Frequently Asked Questions About Hesse and its Water Temperatures