The area around Trabada is fantastic for walking at all times of the year. If you are staying on a luxury self catering holiday at 'Granero del burro' then you have access to many wonderful walks in both Galicia and Asturias.
In January we went to the Cioyo waterfall - cascada de cioyo. There are 2 nice waterfalls and lots of deep pools which are nice to swim in in Summer. It was however, beautiful in the Winter, and deserted. Get directions here.
On the way back from the waterfall you can stop for a drink or lunch at the Casa Jano in Pianton. It serves wonderful tapas (free) on Sunday lunches. We had whole grilled Langoustines!!