June has got off to an excellent start with sunshine – 90.6 hours in the first 10 days - but unfortunately we have now reached what has not only been the worst period of summer, over the past decade, but just about the worst period of the entire year.
This weekend was dreadful – the worst since March – and the concern is that the June permacast has now set in. The middle third of June has been simply vile over the past 11 years. Not a single year when it could be described as good while only 2009 and 2010 had a good final third.
Here’s the breakdown of sunshine and it shows just how much things deteriorate after the 10th:

Those averages are simply a disgrace, illustrating how awful without precedent the month of June has become. Average used to be around 190 hours in the early to mid 20th Century, dropping to 175 hours by the end of the 20th Century. The current levels just defy belief.
It’s been 15 years since June last managed 200 hours. Prior to this the longest run was only 10 years and that was fairly recent (1976-85). Before that there had never been more than five (1950-54), again showing the drastic deterioration in this month.
Looking at those figures only 2008 and 2009 recorded as much as 109 hours between the 11th and 30th, which is the amount required for this month to hit 200 hours. Levels as poor as 2007, 2012, 2014 and 2016 for the rest of the month would see it turn out duller than average despite the good start.
Originally Posted by: richardabdn