For Brienzersee-Schneckeninsel : No gale warning.
The reliability of the situation is assessed at 90%.
A few fair-weather cumulus clouds in the morning, skies becoming progressively hazier during the afternoon. No precipitation.
In the evening, skies with few clouds. SW force 1 becoming force 2 in the middle of the day then NW force 1. Gusts reaching 10 knots in the middle of the day. Excellent visibility.