Lac de la Gruyère Water Temperature
Live water temperature, trend and forecasts
Current water temperature
24,6°C
very pleasant waterLast measurement : 30.07.2026 21:00
24h trend
+0,7°
24h average
23,9°C
This artificial lake in the canton of Fribourg, created by the Rossens dam, winds for nearly 13 kilometres through the heart of the Gruyère region. Its wooded shores, Ogoz Island and quiet coves make it a popular spot to unwind, away from the crowded beaches.
The water temperature of Lake Gruyère is generally a notch below that of the large lowland lakes, but it becomes pleasant for swimming in July and August. Find the current temperature here, along with the forecast and monthly averages computed over several decades.
7-day evolution
Daily average surface water temperatures.
Forecast
Predicted water temperatures for the coming days (simulation).
Thu 30.07
23,9°
Fri 31.07
24,2°
Sat 01.08
24,5°
Sun 02.08
24,9°
Mon 03.08
25,4°
Average temperatures month by month
Historical averages of surface water temperature, computed over the period 1991–2025.
| Month | Average | Min – Max |
|---|---|---|
| January | 5,3°C | 4,6° – 6,2° |
| February | 4,5°C | 4,4° – 4,7° |
| March | 5,7°C | 4,7° – 7,0° |
| April | 8,8°C | 7,1° – 10,6° |
| May | 12,5°C | 10,7° – 14,5° |
| June | 16,6°C | 14,6° – 19,0° |
| July | 19,7°C | 19,1° – 20,8° |
| August | 20,6°C | 19,7° – 21,1° |
| September | 17,9°C | 16,4° – 19,5° |
| October | 14,7°C | 13,2° – 16,3° |
| November | 11,3°C | 9,4° – 13,1° |
| December | 7,7°C | 6,2° – 9,3° |
Lake location
Activities around Lac de la Gruyère
Beaches, swimming and family outings around this lake.
What if the whole family boarded the same boat, with no licence and no experience? In Corbières, Aventure Gruyère rents licence-free boats, kayaks from CHF 15 and paddleboards, including giant models. There are even treasure hunts on the water.
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What if the swim had to be earned at the end of a path? At Botterens, right at the southern end of Lake Gruyère, the shore is reached on foot from the lakeside trail, level with Villarbeney. A natural, free and discreet spot for a family swim far from the big beaches.
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Looking for a lake beach where the little ones can paddle safely? At Corbières, at the spot known as La Montagnetta, the lawn slopes very gently down to the water in the shade of tall trees. Playground, fire pits for barbecues and completely free access.
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Fancy a beach where you can spread out your towels without bumping into anyone? At Gumefens, the lawn unrolls nearly 2,000 m2 on the shore of Lake Gruyère, with the Île d'Ogoz and its medieval ruins as a backdrop. Entirely free, with a large car park right beside it, along the Route du Marais.
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Do your children dream of an island with a real castle? In the middle of Lake Gruyère, the Île d'Ogoz keeps two towers from the 13th century and a small white chapel. You reach it by solar-powered boat from the Port du Bry, and on a few days each year, on foot.
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Fancy seeing Lake Gruyère from the water rather than from the beach? In La Roche, Kayak Aventure rents kayaks, canoes and stand up paddleboards on the lakeside, with a half-price rate for 8 to 16 year olds. Guided outings lead all the way to the Île d'Ogoz.
View detailsFrequently asked questions
What is the water temperature of Lac de la Gruyère today?
The current surface water temperature of Lac de la Gruyère is 24,6°C, with a 23,9°C average over the last 24 hours. Data is updated several times a day.
Can you swim in Lac de la Gruyère right now?
With water at 24,6°C, the temperature of Lac de la Gruyère is considered very pleasant for swimming. Always keep an eye on children near the water.
When is the water of Lac de la Gruyère warmest?
Over the period 1991–2025, the water of Lac de la Gruyère is on average warmest in August, at around 20,6°C at the surface.
Where does the temperature data come from?
Temperatures come from the Alplakes scientific platform, developed by Eawag (the Swiss Federal Institute of Aquatic Science and Technology). They are produced by the Simstrat simulation model, calibrated with real measurements.
Data provided by Alplakes (Eawag), Simstrat simulation model.