Have to say my own subjective impressions of summer 2016 have been pretty good, above average. Not as hot, or as dry, as memorable good summers my lifetime. But not as cold, or as wet either, as the bad memories. Just a jolly nice southern British (in my case) summer.
I think a prediction for a colder winter is credible too. That's based just on the observation that the past few winters in UK have been exceptionally mild without any sound scientific explanation other than natural fluctuations in climate, so we shouldn't assume that mild winters are the new norm...