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Alster River

Alster River Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Alster River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Water Temperature in Alster River

19.8°C

TODAY

19.3°C

YESTERDAY

20.9°C

A WEEK AGO

As of today, the minimum water temperature in the Alster River 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.

Analysis, Historical Data, and Forecast of Water Temperature

Water Temperature Chart for Alster River Over the Last 30 Days

Today the water temperature in Alster River is lower than the same day in previous years. The water temperature range here in July is from 17°C to 25°C. The water temperature has decreased over the past 7 days but has increased over the past month.

The forecasted water temperature values for Alster are presented in the table below.

The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.

Daily Water Temperature Chart

DateCurrentAverageForecast
Jul 620.9°C20.4°C
Jul 720.1°C20.4°C
Jul 819.7°C20.4°C
Jul 919.4°C20.4°C
Jul 1019.4°C20.4°C
Jul 1119.2°C20.4°C
Jul 1219.3°C20.4°C
Jul 1319.8°C20.4°C
Jul 1420.4°C19.8°C
Jul 1520.4°C19.8°C
Jul 1620.4°C19.8°C
Jul 1720.4°C19.8°C
Jul 1820.4°C19.8°C
Jul 1920.4°C19.8°C
Jul 2020.4°C19.8°C
Jul 2120.4°C19.8°C
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Alster River by Month

January

MinimumAverageMaximum
1°C3°C5°C

February

MinimumAverageMaximum
2°C4°C6°C

March

MinimumAverageMaximum
4°C6.5°C9°C

April

MinimumAverageMaximum
8°C10.6°C14°C

May

MinimumAverageMaximum
11°C13.9°C17°C

June

MinimumAverageMaximum
16°C20°C24°C

July

MinimumAverageMaximum
17°C20.4°C25°C

August

MinimumAverageMaximum
18°C20.4°C23°C

September

MinimumAverageMaximum
15°C17.7°C23°C

October

MinimumAverageMaximum
10°C13.3°C16°C

November

MinimumAverageMaximum
5°C8°C11°C

December

MinimumAverageMaximum
1°C3.5°C6°C

Monthly Water Temperature Histogram for Alster River

Water Temperature in Cities and Towns on Alster River

Sülfeld
Germany (Schleswig-Holstein)
20.0°C
Wohldorf-Ohlstedt
Germany (Hamburg)
20.1°C

Alster River Weather

JULY 14

15°C / 25°C
slight rain showers

rain: 10% | wind: 16 km/h

JULY 15

14°C / 21°C
moderate rain

rain: 50% | wind: 21 km/h

JULY 16

13°C / 18°C
slight thunderstorm

rain: 42% | wind: 13 km/h

JULY 17

13°C / 20°C
overcast

rain: 15% | wind: 21 km/h

JULY 18

12°C / 26°C
overcast

rain: 15% | wind: 8 km/h

Water Temperature in Alster River: General Trends and Swimming Opportunities

Source:
• location Henstedt-Ulzburg
• coordinates 53°45′49.1″N 10°0′17.4″E
• elevation 31 m (102 ft)
Mouth Elbe
• location Hamburg
• coordinates 53°32′40″N 9°59′0″E
• elevation 4 m (13 ft)
Length 56 km (35 mi)

The Alster River in Hamburg, Germany, is a popular spot for both locals and tourists, especially during the warmer months. The water temperature of the Alster varies depending on the season, with the summer months seeing temperatures rise to between 18°C and 22°C (64°F - 72°F). These temperatures make it suitable for swimming, especially in designated areas like the Alster Swimming Zone near the city center. The Alster is relatively clean compared to many other rivers in Germany, as it is fed by lakes and is part of a highly managed water system. As such, it is one of the more popular places for swimming, kayaking, and other water activities.

Swimming in the Alster is safe when undertaken in designated swimming areas, though the water temperature can be lower in the spring and fall, requiring a wetsuit for comfort. Since the river is surrounded by urban areas, it can sometimes be affected by pollution, but the local authorities regularly monitor water quality. The Alster is also home to several recreational spots and parks, making it an attractive place for swimmers to enjoy the natural beauty of Hamburg. However, the river’s currents can be strong in certain parts, so swimmers should remain cautious in areas with faster-moving water.

Geographical Location of Alster River

Frequently Asked Questions About Alster River and its Water Temperatures

What is the current water temperature in Alster River?

The water temperature today in Alster River is 68°F (19.8°C).

What is the water temperature in Alster River during the summer months?

The average water temperature in Alster River during the summer months is typically between 69°F to 69°F (20°C to 20°C), and it can reach up to 77°F (25°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Alster River in May?

The average water temperature in Alster River in May ranges from 52°F to 63°F (11°C to 17°C).

What is the water temperature in Alster River in September?

The average water temperature in Alster River in September is typically between 59°F to 73°F (15°C to 23°C).

Where does Alster River flow?

Alster River flows through Germany (Schleswig-Holstein, Hamburg).

Is it possible to swim in the Alster River?

Yes, it is possible to swim in the Alster River in Hamburg, Germany. However, swimming is not recommended due to urban pollution and heavy boat traffic.