I am considering walking the Camino Frances starting from Sarria. I am thinking of starting at the end of July. I understand it would be busy but wondering if it will be very hot.
The weather will be what it is. For forecasts nearer the time try here: http://www.aemet.es/es/eltiempo/prediccion/municipios/sarria-id27057 Aemet also provides historic data if you wish to do a little research on recent trends. In July in Galicia it can be hot, or wet, or both.