September is better than April IMO - the days are shorter, but unlike April, September is a warm month, and is more or less the same as June. That's why I often think of the 'summer period' being June to September, or at least the first half of September.
Although July and August are the sunniest months in % terms, at least in Eastern, central and southern England. For a month with such long daylight, June really doesn't impress at all, usually just a bit sunnier or even duller than August on average.
Originally Posted by: LeedsLad123