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Herthasee — Current Water Temperature, Annual Trends and Forecast

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

Haidenweiher, Germany
Haidenweiher, Germany © By El tommo, CC0

Current Water Temperature

23.0°C
Today
23.3°C
Yesterday
22.6°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 Herthasee today is 23°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 May 30 to June 30

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUN 2322.6°C21.0°C
JUN 2422.6°C21.0°C
JUN 2523.0°C21.0°C
JUN 2623.1°C21.0°C
JUN 2723.4°C21.0°C
JUN 2823.2°C21.0°C
JUN 2923.3°C21.0°C
JUN 3023.0°C21.0°C
JUL 120.0°C22.9°C
JUL 220.0°C22.7°C
JUL 320.0°C22.6°C
JUL 420.0°C22.4°C
JUL 520.0°C22.3°C
JUL 620.0°C22.1°C
JUL 720.0°C22.0°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
January2°C5°C7°C
February2°C5°C8°C
March6°C7°C10°C
April7°C11°C14°C
May12°C16°C20°C
June17°C21°C25°C
July17°C20°C25°C
August18°C21°C23°C
September13°C18°C22°C
October11°C13°C15°C
November4°C9°C13°C
December4°C6°C7°C

Herthasee: Water Temperature by Location

Herthasee: Weather Forecast

July 1

° / °
overcast
rain: 55% | wind:

July 2

° / °
overcast
rain: 14% | wind:

July 3

° / °
overcast
rain: 15% | wind:

July 4

° / °
overcast
rain: 3% | wind:

July 5

° / °
overcast
rain: 3% | wind:

Location & Local Information

Herthasee, located in the picturesque Westerwald region of Germany, is a popular destination for outdoor enthusiasts, especially in the warmer months. The lake’s water temperature reaches comfortable swimming levels during the summer, with temperatures typically ranging from 18°C to 22°C (64°F to 72°F). These temperatures are ideal for swimming, making it a perfect spot for families, casual swimmers, and nature lovers. The lake’s clear water, along with its shallow areas, offers a pleasant swimming experience, allowing swimmers to enjoy the surrounding nature as they cool off. During the peak summer months, the lake becomes a serene spot for relaxation, with plenty of space along the shores to sunbathe or take a leisurely swim.

While swimming is most popular in summer, the water temperature drops significantly during the spring and autumn months, typically falling below 15°C (59°F). As a result, swimming becomes less enjoyable during these cooler months, though the lake remains an attractive location for other activities such as hiking, picnicking, and birdwatching throughout the year. The surrounding forest and peaceful ambiance make it a perfect place for nature walks, while the lake’s water remains an inviting option for those seeking a refreshing swim during the warmer seasons.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Herthasee?
Water Temperature in Herthasee today is 23°C.
What is the water temperature in Herthasee during the summer months?
The water temperature in Herthasee in summer fluctuates in the range of 17°C - 25°C.
Is it possible to swim in Herthasee and what are the possibilities for this?
Yes, it is possible to swim in Herthasee in Germany. The lake offers designated bathing areas and boating facilities for recreational activities.