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Average December finishes a warm 2011

Government Communications (NDS)

30 December 2011

The mean temperature so far this December has been 4.7 deg C, 0.5 deg C above the 1971-2000 average. This is a big swing from 2010, when temperatures were 5 deg C below average to notch up the coldest December on record.John Prior, National Climate Manager at the Met Office, said: “While it may have felt mild for many so far this December, temperatures overall have been close to what we would expect.“It may be that the stark change from last year, which was the coldest December on record for the UK, has led many to think it has been unseasonably warm.”December statsEARLYMean temperatureSunshine durationRainfallDec-2011ActualDifference from average Actual% of average Actual% of average UK4.70.540.6106146.4117England5.50.852.511889.399Wales5.81.028.073194.7112Scotland3.0-0.126.792230.9136N Ireland4.70.026.678132.3112The trend of marked differences from one year to the next continues with the annual figures for 2011 – which show the year is expected to be the second warmest on record for the UK.Up to 28 December, 2011 currently has an average temperature of 9.62 deg C. This is a big change from 2010, which was the 12th coldest year on record with 7.97 deg C.However, this year marks a return to a trend of warmer than average annual temperatures – all the UK’s top seven warmest years happened in the last decade, with 2006 leading the list with 9.73 deg C.This year saw some UK records broken too. It was the warmest April and Spring on record, and the second warmest Autumn on record.The highest single-day temperature for October was also broken – with Gravesend in Kent notching up 29.9 deg C on 1 October, beating the previous record of 29.4 deg C at March in Cambridgeshire on 1 October 1985.The top temperature in 2011 was 33.1 deg C on 27 June at Gravesend in Kent – which was the warmest temperature recorded in the UK for five years.There have been some marked variations in rainfall in 2011, with Scotland having its wettest year on record with 1859.5mm of rain (beating the previous record set in 1990). On the other hand, some parts of England have had very low levels of rainfall – East Anglia had its second driest year on record with 449mm of rain and the Midlands its third driest with 586.5mm.2011 Facts:Warmest temperature: 33.1 deg C, Gravesend, Kent on 27 JuneColdest temperature: -13 deg C, Altnaharra, Highlands, on 8 JanuaryStrongest gust: 165 mph (Caingorm Summit, 8 December)Top ten warmest years for UK:1. 2006 – 9.73 deg C2. 2011 – 9.62 deg C (provisional)3. 2007 – 9.59 deg C4. 2003 – 9.50 deg C5. 2004 – 9.47 deg C6. 2002 – 9.47 deg C7. 2005 – 9.45 deg C8. 1990 – 9.41 deg C9. 1997 – 9.40 deg C10. 1949 – 9.38 deg CAnnual StatsEARLYMean temperatureSunshine durationRainfall2011ActualDifference from average Actual% of average Actual% of average UK9.621.031416.3104.51157.6102.8England10.551.181563.9107.0707.484.3Wales9.890.991465.5105.51272.688.6Scotland8.040.851182.699.51859.5122.2N Ireland9.340.661274.8102.91237.9111.3