You will find some useful links below for weather forecast. If you want to be really sure, ask Dr Sándor Nagy on the airfield. He will tell you exactly when to expect good weather (slight chance of being wrong, but that’s rare).
National Meteorological Service
An all-embracing general database of the National Meteorological Service.
Satellite pictures, thermal predictions for both “beginner and experienced” pilots.
Aviation Weather for Europa
Collection of significant maps, military wind and rainfall predictions.