We have had over 30c weather the last few weeks and not a cloud in the sky.
But boy has this changes over the last few days. This photo is from El Correo Gallego and says it all. No poncho, rain coat or umbrella will keep you dry in this type of weather.
By th eway, if you encounter such weather while on the camino, stop and order a “Café con Leche” and once you are done drinking it, the sun might be out. The weather changes fast in Galicia.