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Lake Geneva

Lake Geneva Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Lake Geneva, 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

19.2°C

TODAY

19.1°C

YESTERDAY

19.6°C

A WEEK AGO

As of today, the minimum water temperature in the Lake Geneva 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.

Analysis, Historical Data, and Forecast of Water Temperature

Water Temperature Chart for Lake Geneva Over the Last 30 Days

Today the water temperature in Lake Geneva is lower than the same day in previous years. The water temperature range here in September 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 Lake Geneva 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
Sep 519.6°C20.1°C
Sep 619.6°C20.1°C
Sep 719.3°C20.1°C
Sep 819.5°C20.1°C
Sep 919.8°C20.1°C
Sep 1019.4°C20.1°C
Sep 1119.1°C20.1°C
Sep 1219.2°C20.1°C
Sep 1320.1°C19.3°C
Sep 1420.1°C19.4°C
Sep 1520.1°C19.4°C
Sep 1620.1°C19.4°C
Sep 1720.1°C19.4°C
Sep 1820.1°C19.4°C
Sep 1920.1°C19.4°C
Sep 2020.1°C19.4°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 Lake Geneva by Month

January

MinimumAverageMaximum
6°C8.5°C11°C

February

MinimumAverageMaximum
6°C7°C8°C

March

MinimumAverageMaximum
6°C7.2°C9°C

April

MinimumAverageMaximum
6°C9.5°C13°C

May

MinimumAverageMaximum
11°C13.6°C17°C

June

MinimumAverageMaximum
17°C19.9°C24°C

July

MinimumAverageMaximum
20°C22.7°C28°C

August

MinimumAverageMaximum
20°C22.9°C26°C

September

MinimumAverageMaximum
17°C20.1°C25°C

October

MinimumAverageMaximum
12°C15°C18°C

November

MinimumAverageMaximum
9°C11.8°C14°C

December

MinimumAverageMaximum
7°C9°C11°C

Monthly Water Temperature Histogram for Lake Geneva

Water Temperature in Cities and Towns on Lake Geneva

Switzerland
18.1°C
Pregny-Chambésy
Switzerland
18.0°C
Bellevue
Switzerland
18.1°C
Genthod
Switzerland
18.0°C
Coppet
Switzerland
18.4°C
Switzerland
18.4°C
Prangins
Switzerland
18.6°C
Gland
Switzerland
18.7°C
Rolle
Switzerland
19.1°C
Buchillon
Switzerland
19.0°C
Switzerland
19.3°C
Saint-Sulpice
Switzerland
18.8°C
Switzerland
19.1°C
La Tour-de-Peilz
Switzerland
18.2°C
Switzerland
19.1°C
Villeneuve
Switzerland
18.1°C
Port-Valais
Switzerland
18.2°C
Saint-Gingolph
France
18.9°C
France
19.4°C
France
19.1°C
Neuvecelle
France
19.0°C
France (Auvergne-Rhône-Alpes)
19.2°C
France (Auvergne-Rhône-Alpes)
19.2°C
Anthy-sur-Léman
France (Auvergne-Rhône-Alpes)
18.7°C
Sciez
France (Auvergne-Rhône-Alpes)
18.4°C
Excenevex
France (Auvergne-Rhône-Alpes)
18.4°C
France (Auvergne-Rhône-Alpes)
19.4°C
Nernier
France (Auvergne-Rhône-Alpes)
18.6°C
France (Auvergne-Rhône-Alpes)
18.8°C
France (Auvergne-Rhône-Alpes)
18.5°C
Hermance
Switzerland (Auvergne-Rhône-Alpes)
18.1°C
Anières
Switzerland
18.1°C
Collonge-Bellerive
Switzerland
17.9°C
Cologny
Switzerland
18.2°C
France (Auvergne-Rhône-Alpes)
19.1°C

Known Beaches in the Area of Lake Geneva?

Ladies Bath

Ladies Bath is a 1-stars sandy beach, located in a 5 km (3 miles) radius of Lake Geneva.

Allaman Beach

Allaman Beach is a 1-stars sandy beach, located in a 6 km (4 miles) radius of Lake Geneva.

Lake Geneva Weather

SEPTEMBER 12

13°C / 18°C
slight rain showers

rain: 13% | wind: 27 km/h

SEPTEMBER 13

13°C / 20°C
moderate rain

rain: 68% | wind: 18 km/h

SEPTEMBER 14

15°C / 22°C
slight rain showers

rain: 58% | wind: 18 km/h

SEPTEMBER 15

17°C / 24°C
partly cloudy

rain: 23% | wind: 31 km/h

SEPTEMBER 16

12°C / 19°C
overcast

rain: 23% | wind: 17 km/h

SEPTEMBER 17

11°C / 19°C
overcast

rain: 23% | wind: 8 km/h

Water Temperature in Lake Geneva: General Trends and Swimming Opportunities

Original name of the lake: Lac Léman, Genfersee, Lago Lemano

Lake type: Glacial lake
Primary inflows: Rhône, Dranse
Primary outflows: Rhône
Catchment area: 7,975 square kilometres (3,079 sq mi)
Basin countries: Switzerland, France
Max. length: 73 km (45 mi)
Max. width: 14 km (8.7 mi)
Surface area: 580.03 km2 (224 sq mi)
Average depth: 153.4 metres (503 feet)
Max. depth: 310 metres (1,020 feet)
Water volume: 89 km3 (72 million acre⋅ft; 21 cu mi)
Residence time: 11.4 years
Shore length1: 156 km (97 mi)
Surface elevation

Lake Geneva, straddling the border between Switzerland and France, offers a variety of swimming opportunities, especially during the warmer months. In June, water temperatures typically reach around 18.4°C (65.1°F), which may be slightly cool for some swimmers but generally acceptable for a refreshing dip. As the summer progresses into August, the lake warms further, with temperatures averaging between 21.2°C (70.2°F) and 22.6°C (72.7°F), providing more comfortable conditions for swimming and other water activities.

The lake's extensive shoreline features numerous public beaches and designated swimming areas, catering to both locals and tourists. Popular spots include the Bains des Pâquis in Geneva and the Plage de Vidy in Lausanne, both offering amenities such as changing facilities, lifeguards, and recreational areas. These locations become particularly vibrant during the peak summer months, as swimmers take advantage of the pleasant water temperatures and scenic surroundings.

It's important to note that outside of the summer season, Lake Geneva's water temperature decreases significantly. In the winter months, temperatures can drop to around 6°C (43°F), making swimming less appealing except for the most enthusiastic cold-water swimmers. Therefore, for those seeking a comfortable swimming experience, the period from late June to early September is ideal, when the water is warmest and the lakeside facilities are fully operational.

Geographical Location of Lake Geneva

Frequently Asked Questions About Lake Geneva and its Water Temperatures

What is the current water temperature in Lake Geneva?

The water temperature today in Lake Geneva ranges from 64°F (17.9°C) to 67°F (19.4°C).

What is the water temperature in Lake Geneva during the summer months?

The average water temperature in Lake Geneva during the summer months is typically between 68°F to 73°F (20°C to 23°C), and it can reach up to 82°F (28°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Lake Geneva in May?

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

What is the water temperature in Lake Geneva in September?

The average water temperature in Lake Geneva in September is typically between 63°F to 77°F (17°C to 25°C).

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

Yes, it is possible to swim in Lake Geneva, Switzerland. There are numerous accessible public beaches and swimming pools alongside this lake for facilitated swimming activities.

What are the coordinates of Lake Geneva?

Lake Geneva is located at coordinates 46.4340°N 6.4440°E.