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Summer 2011

The following represents an assessment of the weather experienced across the UK during summer 2011 (June, July and August) and how it compares with the averages for the period 1971 to 2000.

The UK mean temperature for summer was 13.7 °C, which is 0.4 °C below average. The mean temperature was near average during June, 0.7 °C below average during July and 0.6 °C below in August. It was the coolest June across the UK since 2001, the coolest July since 2000 and the coolest August since 1993. The season was the coolest since summer 1993. There were only around ten days when the temperature exceeded 25 °C widely.

The UK summer rainfall was 18% above normal but there were very marked regional variations. Eastern Scotland and north-east England were particularly wet in both July and particularly August, when over twice the normal amount was recorded widely. Most of eastern Scotland received well over 150% of average rainfall through the summer. In contrast, much of the Midlands was relatively dry throughout, extending a dry period that can be traced back to autumn 2010. The UK was generally wetter than summer 2010, but not as wet as summers 2007 to 2009.

Sunshine totals over the UK were close to average, and similar to summer 2010. Durations were close to normal during June (104%) and July (98%) but well below in August (77%).  Over western Scotland, July was one of the sunniest in the series from 1929.

UK statistical summary
Mean temperature Rainfall Sunshine
The mean value is 13.7 °C, which is 0.4 °C below the 1971-2000 average. The provisional total is 267 mm, which is 118% of the 1971-2000 average. The provisional total is 473 hours, which is 93% of the 1971-2000 average.

Provisional graph of UK daily mean temperature for Summer 2011

Provisional graph of UK daily mean temperature for Summer 2011

Mean temperature anomaly (difference from average) map for Summer 2011

Provisional temperature anomaly map for Summer 2011

Rainfall percent of average map for Summer 2011

Provisional rainfall percent of average map for Summer 2011




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