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Außenalster Lake — Current Water Temperature, Annual Trends and Forecast

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

Außenalster Lake, Germany
Außenalster Lake, Germany © By Wolfgang Meinhart, GFDL

Current Water Temperature

17.7°C
Today
18.0°C
Yesterday
18.5°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 Außenalster Lake today is 17.7°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 August 20 to September 20

Table of Daily Sea Temperature Data

Date Current Average Forecast
SEP 1318.5°C18.5°C
SEP 1418.3°C18.5°C
SEP 1518.3°C18.5°C
SEP 1617.7°C18.5°C
SEP 1718.0°C18.5°C
SEP 1818.3°C18.5°C
SEP 1918.0°C18.5°C
SEP 2017.8°C18.5°C
SEP 2118.5°C17.7°C
SEP 2218.5°C17.8°C
SEP 2318.5°C17.8°C
SEP 2418.5°C17.9°C
SEP 2518.5°C17.9°C
SEP 2618.5°C17.9°C
SEP 2718.5°C18.0°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°C3°C5°C
February1°C4°C7°C
March4°C7°C10°C
April8°C11°C14°C
May11°C15°C20°C
June16°C20°C24°C
July17°C20°C25°C
August18°C21°C25°C
September14°C19°C23°C
October10°C13°C16°C
November4°C8°C11°C
December1°C4°C8°C

Außenalster Lake: Water Temperature by Location

Außenalster Lake: Weather Forecast

September 21

° / °
overcast
rain: 18% | wind:

September 22

° / °
overcast
rain: 0% | wind:

September 23

° / °
fog
rain: 23% | wind:

September 24

° / °
overcast
rain: 23% | wind:

Location & Local Information

The Außenalster, located in the heart of Hamburg, is one of the city's most iconic bodies of water, offering a picturesque setting for various recreational activities. While the lake is not primarily known for swimming, it is a popular spot for boating, rowing, and walking along its shores. During the summer months, the water temperature in the Außenalster typically ranges from 18°C to 22°C, providing relatively comfortable conditions for those who wish to take a dip. However, due to the lake's high traffic from boats and other water activities, the water can sometimes become less clear and less inviting for swimming. Still, for those looking for a quick and refreshing swim, there are areas where swimming is permitted, and many locals enjoy the chance to cool off during hot days.

While there are no official designated swimming areas in the Außenalster, it remains a favorite spot for a range of water-based activities. The lake’s proximity to the city makes it convenient for residents and visitors alike to enjoy its offerings, though it is essential to be cautious due to the heavy boat traffic, especially in the warmer months. Swimmers should be mindful of the water's quality, as the lake is a popular site for various recreational purposes, which can affect water cleanliness. Despite this, the Außenalster is an enjoyable destination for those looking to experience the waters of Hamburg in a scenic, urban environment.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Außenalster Lake?
Water Temperature in Außenalster Lake today is 17.7°C.
What is the water temperature in Außenalster Lake during the summer months?
The water temperature in Außenalster Lake in summer fluctuates in the range of 16°C - 25°C.
Is it possible to swim in Außenalster and what are the possibilities for this?
Yes, it is possible to swim in Außenalster, Germany, however, it's typically reserved for official swimming events due to water quality and safety concerns. Casual swimming is generally discouraged.