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Grimselsee

Grimselsee Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Grimselsee, 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 Lake Water Temperature Information

3.6°C

TODAY

3.2°C

YESTERDAY

3.8°C

A WEEK AGO

As of today, the minimum water temperature in the Grimselsee ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters.

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 Grimselsee Over the Last 30 Days

Today the water temperature in Grimselsee is lower than the same day in previous years. The water temperature range here in May is from 3°C to 16°C. The water temperature has decreased over the past 7 days but has increased over the past month.

The forecasted water temperature values for Grimselsee 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
May 63.8°C9.5°C
May 73.9°C9.5°C
May 83.3°C9.5°C
May 93.6°C9.5°C
May 103.2°C9.5°C
May 113.3°C9.5°C
May 123.2°C9.5°C
May 133.4°C9.5°C
May 149.5°C4.0°C
May 159.5°C4.3°C
May 169.5°C4.6°C
May 179.5°C4.9°C
May 189.5°C5.2°C
May 199.5°C5.5°C
May 209.5°C5.8°C
May 219.5°C6.0°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 Grimselsee by Month

January

MinimumAverageMaximum
0°C0.5°C1°C

February

MinimumAverageMaximum
0°C0°C0°C

March

MinimumAverageMaximum
0°C0.5°C1°C

April

MinimumAverageMaximum
1°C5°C9°C

May

MinimumAverageMaximum
3°C9.5°C16°C

June

MinimumAverageMaximum
15°C17.5°C22°C

July

MinimumAverageMaximum
16°C19.2°C24°C

August

MinimumAverageMaximum
19°C22°C25°C

September

MinimumAverageMaximum
9°C12.1°C17°C

October

MinimumAverageMaximum
0°C3°C6°C

November

MinimumAverageMaximum
0°C0.6°C6°C

December

MinimumAverageMaximum
0°C0.5°C1°C

Monthly Water Temperature Histogram for Grimselsee

Grimselsee Weather

MAY 14

1°C / 5°C
slight rain showers

rain: 65% | wind: 11 km/h

MAY 15

0°C / 8°C
overcast

rain: 15% | wind: 12 km/h

MAY 16

1°C / 7°C
slight rain showers

rain: 13% | wind: 13 km/h

Water Temperature in Grimselsee: General Trends and Swimming Opportunities

Type: artificial lake, hydroelectric reservoir
Primary inflows: Oberaarbach [de], Treibtenbach
Primary outflows: Aare
Catchment area: 74.4 km2 (28.7 sq mi)
Basin countries: Switzerland
Surface area: 2.63 km2 (1.02 sq mi)
Water volume: 95 million cubic metres (77,000 acre⋅ft)
Surface elevation: 1,908 m (6,260 ft)

Grimselsee is an artificial reservoir located in the Bernese Alps in Switzerland, near the Grimsel Pass. It is formed by the Grimsel Dam and is part of a larger hydroelectric system. The lake, with its striking turquoise waters, is surrounded by dramatic alpine landscapes and attracts hikers and nature enthusiasts. Due to its high altitude (around 1,900 meters), the water temperature in Grimselsee stays cold year-round, typically ranging from 4°C to 10°C (39°F to 50°F) during summer, making swimming very uncommon.

Geographical Location of Grimselsee

Frequently Asked Questions About Grimselsee and its Water Temperatures

What is the current water temperature in Grimselsee?

The water temperature today in Grimselsee is 38°F (3.6°C).

What is the water temperature in Grimselsee during the summer months?

The average water temperature in Grimselsee during the summer months is typically between 64°F to 72°F (18°C to 22°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 Grimselsee in May?

The average water temperature in Grimselsee in May ranges from 50°F to 61°F (10°C to 16°C).

What is the water temperature in Grimselsee in September?

The average water temperature in Grimselsee in September is typically between 48°F to 63°F (9°C to 17°C).

Where is Grimselsee located?

Grimselsee is located in Switzerland, at an elevation of 6,260 feet (1908 meters) above sea level.

Is it possible to swim in Grimselsee and what are the possibilities for this?

Yes, it is possible to swim in Grimselsee in Switzerland. However, the lake is glacier-fed, hence it's usually very cold, and there are no specific public facilities for swimming.

What are the coordinates of Grimselsee?

Grimselsee is located at coordinates 46.5660°N 8.3040°E.