Complex sentence: Cornwall is one of the sunniest areas in the UK, with over 1541 hours of sunshine per year, with the highest average of 7.6 hours of sunshine per day in July.
Split into simpler sentences: Cornwall is one of the sunniest areas in the UK. It has more than 1,541 hours of sunshine per year, with the highest average of 7.6 hours of sunshine per day in July.