Yes, the late August pattern change looks strong on repeated runs and in the ensembles. Just as the early August pattern change to low pressure has been long heralded. Jet stream heading north.
As analogues for the summer go, it looks like we won’t be far off 1999. going to be closest:
June 1999: average temps, generally very wet and stormy
July 1999: warm and sunny, pretty dry in many places
August 1999: wet and stormy, flooding in Lancs and North East, slightly warmer than average. Weather improved markedly in the final week leading to a very warm and sunny Sept.
Brockley, South East London 30m asl