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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

0.7°C

TODAY

0.8°C

YESTERDAY

0.5°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 higher than the same day in previous years. The water temperature range here in March is from 0°C to 1°C. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.

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

Date	Current	Average	Forecast
Mar 23	0.5°C	0.5°C
Mar 24	0.5°C	0.5°C
Mar 25	0.6°C	0.5°C
Mar 26	0.6°C	0.5°C
Mar 27	0.7°C	0.5°C
Mar 28	0.7°C	0.5°C
Mar 29	0.8°C	0.5°C
Mar 30	0.7°C	0.5°C
Mar 31		0.5°C	0.7°C
Apr 1		6.2°C	1.0°C
Apr 2		6.2°C	1.3°C
Apr 3		6.2°C	1.6°C
Apr 4		6.2°C	1.9°C
Apr 5		6.2°C	2.2°C
Apr 6		6.2°C	2.5°C
Apr 7		6.2°C	2.7°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

Minimum	Average	Maximum
0°C	0.5°C	1°C

February

Minimum	Average	Maximum
0°C	0°C	0°C

March

Minimum	Average	Maximum
0°C	0.5°C	1°C

April

Minimum	Average	Maximum
3°C	6.2°C	9°C

May

Minimum	Average	Maximum
10°C	13.2°C	16°C

June

Minimum	Average	Maximum
15°C	17.5°C	22°C

July

Minimum	Average	Maximum
16°C	19.2°C	24°C

August

Minimum	Average	Maximum
19°C	22°C	25°C

September

Minimum	Average	Maximum
9°C	12.1°C	17°C

October

Minimum	Average	Maximum
0°C	3°C	6°C

November

Minimum	Average	Maximum
0°C	0.6°C	6°C

December

Minimum	Average	Maximum
0°C	0.5°C	1°C

Monthly Water Temperature Histogram for Grimselsee

Grimselsee Weather

MARCH 31

-7°C / -2°C

snow grains

rain: 90% | wind: 51 km/h

APRIL 1

-8°C / -2°C

partly cloudy

rain: 5% | wind: 17 km/h

APRIL 2

-4°C / 0°C

slight snow fall

rain: 6% | wind: 19 km/h

APRIL 3

-2°C / 7°C

slight snow fall

rain: 5% | wind: 17 km/h

APRIL 4

1°C / 8°C

overcast

rain: 0% | wind: 15 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 33°F (0.7°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.