Yes, I'm sure it was the weather. My courgettes and cucumbers were good although they were on the ground, but potatoes and tomatoes gave up completely. My neighbour has an enormous piece of land put down to potatoes and he lost the lot. My spinach, herbs, leeks, mixed salad lettuces, radishes, three sorts of onions, shallots and beetroot were fine. In late September I put in a polytunnel which I hope to grow the tomatoes in this year as well as lots of other veggies and fruit too. I did plant some strawberry plants in their as soon as it was up and was still eating those into December - brilliant!
I haven't grown veggies for years and years and it was so lovely to be able to go and pick things and eat them minutes later, with eggs from my hens and pork from my pigs I felt almost self-sufficient some days. The local children loved helping too and went home with some of the surplus eggs.