
Map showing mean temperatures at a select number of synoptic stations for the summer period June 1st – August 15th 2011
Summer 2011 could finish the coldest summer in at least 25 years in some places according to Met Éireann. Speaking on RTE Television last night, Forecaster Siobhan Ryan stated that "This summer is shaping up to be the coldest summer at many of our stations since 1986 and especially so for Dublin Airport where it has been the coldest summer, so far, since 1957."
"With that it has been quite dull with 80% of the usual sunshine but at least rainfall totals have come in close to normal. It is worth remembering, however, there have been 40 other summers which have been as cold, if not colder, since records began, but it does look poor against the backdrop of warming we have become accustomed to over the last few years with the summer of 2010 fairing warmer and sunner than normal".
The reason for the generally cooler than average conditions this summer so far is due to fact that most of weather this during June, July and August has come in from the north Atlantic,
usually in the form of Polar Maritime (Pm) air masses which have been unusually dominant this season thus far (particularly so the P5 and P6 strand) and which is the direct result of
the polar jet stream running much further south than normal over the North Atlantic region throughout much of the season.