During summer, the water temperature of Lake Annecy is between 22 and 25 °C.
Relax on your towel or enjoy nautical activities.
The closest beach is Doussard, green grass with a little bit of sand, small pebbles as you enter the clear water, what else do you need?
If you look up, you might admire the aerial ballet of the paragliders spreading on the mountain background.
If you feel like moving a little bit more, you can find scuba diving club, boat rental, pedaloes, stand up paddles and many more...
Last but not least, unlike sea water, swimming in Annecy lake is guaranteed 100 % salt free.