The sunspot level(spotless days)and solar flux have no correlation with climate or the weather if you look at data.Where people are uninformed is you have to look at the solar wind level,EEP levels(energetic electron precipitation)where you are in the 11 year solar cycle(ascending,descending,max,min)and the QBO level.
Basically a Solar/QBO signal,this has been researched and been somewhat accurate in my opinion.There's also ENSO that can influence the climate too