The lake is open for ice fishing.
From Jan 4 the ice layer would be thick enough for ice fishing. The cable car operates from 9 am until 5 pm. Please notice that the toboggan run to Kandersteg will be closed due to risk of rock slides. The downhill piste (ski) is closed – not enough snow. The will be only return tickets sold on the cable car. The region will be closed after 5 pm.
Get you ticket online and skip the line: ticket.oeschinensee.ch
Fishing licences sold in the restaurants around the lake. Get more info under https://www.oeschinensee.ch/en/winter/icefishing/.