Sounds like a good decision.
I binned a trip last Saturday because of some PROB30 weather that in fact never happened, and just did a little local flying instead. One thing that is essential is to hire your aeroplane from someone who doesn't get all upset when you cancel - you never want to feel pressured into flying when you're not sure you like the look of it.
Oh, and when you offer to take someone else flying, always tell your passengers that it's at best 50-50 that you'll get off the ground in England in summertime, that way you won't feel pressured by the passengers feeling disappointed.