Why is August the weakest summer month lately? If it wasn't for the soggy second half last year, it could have been an epic summer (I'm not going to forget it as I had a mini flood in my flat!).
I can't see a repeat of last year. Could either be average i.e something like 2014 / 2016 or as it's been overdue something like 2011 / 2012. I wouldn't even rule out a 2007 repeat even.