Will be starting Camino del Norte in mid March 2017. I know weather conditions change constantly but would like to know what I can expect.?
I walked from Bidart to Bilbao in the last week of March.
Day 1 Bidart - Hondarriabia Mid seventies, Sunny, No Rain and I arrived in Irun sunburnt
Day2 Hondarriabia - San Sebastian Mid sixties, No rain, Sunny
Day3 San Sebastian - Getaria - Mid Sixties, No Rain Overcast
Day4 Getaria - Deba - Mid Sixties, Overcast, but No Rain
Day 5 Deba to the Monastery in Zenarruza - Mid Sixties Sunny and Clear with No Rain
Day 6 Zenarruza - Gernika - Mid fifties - Rained all day - Never Stopped - Even had a shower of hailstones as I arrived in Gernika.
Day7 Gernika - Bilbao - Mid fifties - Overcast - No rain
Moral of the story.... Be prepared for a bit of everything... But for the most part very comfortable walking weather