Summer at last?

Here in eastern England we have had a bad summer so far: it has been very wet and temperatures have been lower than normal. Oddly, my brother in Devon has had a good summer. Next week they are forecasting warmer weather here with sun. Temperatures of 25-22 deg C are possible here. The jet stream has been right overhead and we have seen low after low roll in with very few long sunny spells. Maybe things are changing?