Lac de la Gruyère Water Temperature
Live water temperature, trend and forecasts
Current water temperature
21,3°C
pleasant waterLast measurement : 15.09.2026 06:00
24h trend
+0,1°
24h average
21,6°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).
Tue 15.09
21,7°
Wed 16.09
21,6°
Thu 17.09
21,3°
Fri 18.09
21,2°
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.
Aventure Gruyère in Corbières: licence-free boats, kayaks and paddle
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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Botterens Beach: natural swimming at the end of the lake
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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Corbières Beach: family swimming on Lake Gruyère
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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Gumefens Beach: the wide lawn facing the Île d'Ogoz
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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Île d'Ogoz: the solar boat crossing to the ruins on the lake
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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Kayak Aventure in La Roche: kayak, canoe and paddle on Lake Gruyère
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 listingFrequently asked questions
What is the water temperature of Lac de la Gruyère today?
Can you swim in Lac de la Gruyère right now?
When is the water of Lac de la Gruyère warmest?
Where does the temperature data come from?
Data provided by Alplakes (Eawag), Simstrat simulation model.
