Hi Bart,
The albergues in Galicia are always open. If not, the pilgrims will be notified well ahead through the message boards in the albergues. However, do not expect much, just shelter, although some of them are fully operational: Sarria, Portomarin, Palas de Rei, Melide, Arzua, Pedrouzo, Monte do Gozo. Buen camino.