This year enjoyed the warmest spring on record. Summer was a little warmer than average, with most of the warmth coming in the first half. Overall a warm year.
January. Dry, anticyclonic, sunny, and with average temperatures. It was though cool in the SE. Rainfall was 62% of average, and sunshine 120% (making it the 10th sunniest since 1929). The highest temperature of the month was 14.2C recorded at Achfary (Sutherland) and Plockton (Ross and Cromarty) on the 25th, and the lowest -10.1 at Braemar on the 30th.
February. Quite mild - the ninth warmest since 1910. Particularly mild in the south. It was slightly wetter than average (106%). A dull month (79%) except in NW Scotland, where it was very sunny. After a SW mild start it became colder and anticyclonic from the 4th, with easterly winds and occasional snow. It turned milder from the 13th but stayed quiet until the 21st. Named Storm Doris bought gales to England and Wales on the 23rd, and snow to parts of Scotland. The highest temperature of the month was 18.3C at Northolt and at Kew Gardens in London on the 20th, and the lowest -9.8C at Altnaharra on the 11th.
March. Very mild with frequent SW winds; it tended to be finer and more settled the further SE one was, although the third week was generally settled, with much sunshine. With a provisional CET of 8.8, you have to go back to 1957 (9.2) for one warmer, and it was the third warmest since 1900. The highest temperature of the month was 22.1C at good old Gravesend (Kent) on the 30th, and the lowest -8.6C at Dalwhinnie on the 22nd. Some northern areas saw snow in a colder snap 20-22. There were some large ranges in the third week, the largest being 22.3C at Altnaharra on the 26th (-3.3 to 19.0). The last four days saw more rain. It was wettest in the NW and driest in the E and SE. 325 mm of rain fell at Capel Curig (with 47 mm on the 17th); with 104% of rainfall overall. England and Wales had 112% of average sunshine (120 hours), and Scotland 125%.
April. A CET of 8.9, about a degree warmer than average, and warmer than average across the UK. Rainfall across the country was well below average, with 48% of the UK average; parts of East Scotland (Fife and Lothian) had less than 5 mm. Sunshine was 109% of average. The highest temperature of the month was 25.5C at Cambridge on the 9th, and the the lowest -6.2C at Cromdale (Morayshire) on the 18th. After a showery start the month became extremely anticyclonic. It was warm until the 9th, but then dry, cooler, and with cold nights. There was a short northerly spell with some snow and sharper frosts between the 24th and 27th. The most significant rain of the month was the 30th in the far southwest. The month was very sunny in Jersey: Fort Regent saw 285 hours.
May. The first ten days were anticyclonic with easterly winds, and the widespread drought continued. Thereafter it was much more unsettled with rain, bringing the drought to the end. There was a short hot sunny spell 24-26th, followed by a thundery breakdown. The month overall was very warm; nationally the second warmest May since 1910 (after 2008). It was particularly warm in Northern Ireland and Scotland. Rainfall was above average in the SE but lower in the rest of the country (83% overall). It was a sunny month (115%), particularly in the north and west. Northern Ireland was the sunniest region of the UK with an average of 253.2 hours (147%). The highest temperature of the month was 29.4C at Lossiemouth (Morayshire) on the 26th, and the lowest -5.1C at Shap (Cumbria) on the 9th. The wettest day was the 16th, when 66.0 mm of rain fell at Capel Curig (Conwy).
June. A June that was very different depending on where you were. In the north of Britain it was rather cool, very wet, and rather dull; in the south and east it was very warm, quite dry, and quite sunny. Overall the CET was 16.0C, making it the warmest June in the series since 1976 - but bear in mind that this average hides the regional variation. The month started and ended with unsettled spells. There was a notable heatwave in the middle of the month. The month was quite warm, with 24.3C recorded at London Heathrow on Friday 16th. There then followed a spell of five consecutive days where 30C was recorded somewhere in England, the first time this has happened since 1996: Saturday 17th 30.2C (Teddington), Sunday 18th 32.1C (Hampton), Monday 19th 32.5C (Hampton), Tuesday 20th 31.4C (Wisley), Wednesday 21st 34.5C (Heathrow). The Wednesday high of 34.5C is the highest in June since 1976 (35.6C at Southampton on the 28th). It was much cooler on Thursday 22nd, after a cold front swept south, with a national maximum of "only" 27.2C at Manston (Kent). The lowest temperature of the month was -2.3C at Altnaharra on the 2nd. It was very wet in the north and east, and particularly wet in the Edinburgh region, with 200% of the monthly rainfall there. There were thundery downpours in the SE at the end of the month, with Santon Downham in Norfolk recording 85 mm in 24 hours on the 27th. Although sunshine was close to average overall in England, Scotland only saw 74% of the expected average. So, overall, a very memorable weather month.
July. An unsettled month, with a few brief fine spells. It was fairly warm in the SE in the first half of the month, then cooler and wetter. It was quite a thundery month. The CET was 16.8C, close to average. Sunshine was above or below average in the south, and above in the far NW. Unusually, July 2017 was sunnier in the Shetland Islands than in Cornwall (the 8th such occasion since 1929), It was wetter than average, with nearly twice the long-term average in the south and southeast. The highest temperature of the month was 32.2 at Heathrow on the 6th. 78.0 mm of rain fell at Okehampton (Devon) on the 30-31st. There was devastating flash flooding in the Cornish coastal village of Coverack, on the Lizard Peninsula, with a 1m surge of water, following heavy rain in a thunderstorm on the 18 th, when 170 mm may have fallen locally.
August. Unsettled. The CET temperature was 15.6 (-0.6C), the coolest since 2011. Temperatures were generally slightly beneath average in the south. The month saw a new record high for the late August Bank Holiday Monday, which fell on the 28th this year: 28.2C at Holbeach (Lincs.) - the previous record was set in 1984. The same day it reached 28.9 at Jersey. There was a notable cold front passing through on the 30th; it reached 27C in locations in Kent on the 29th but only 13C on the 30th. Rainfall was about average across mainland Britain, although Northern Ireland was very wet (130% of the average), with severe flooding in places - some areas saw 200%. The 9th was a wet day in the south, with some places seeing 40 mm, and South Uist received 72 mm in thunderstorms overnight on the 22nd. Sunshine was close to average in England and Wales (187 hours, 105%), although it was duller further north and west.
September. An unsettled, westerly month. There were few warm days; the highest temperature of the month was 24.0C at Hawarden on the 4th, and the lowest -1.2C at Altnharra on the 22nd. THE CET was a little beneath average, at 13.8C. It was a wet month across most of the country, particularly England (130%) and especially Wales and Northern Ireland. It was a dull month, England and Wales averaging 112 hours (just 77%), and Northern Ireland only saw 97 hours. Storm Aileen 12-13th, was the first named storm of the season, and its effects were increased by its earliness with leaves still being on the branches.
October. A very westerly and southwesterly month. Ex-hurricane Ophelia brought some very windy and warm conditions around the 16th. Overall it was warmer than average, particularly in the east. It was dry except for the NW, and very dry in the SE (under 25% of average). It was a dull month; the equal dullest October on record in Northern Ireland. The highest temperature of the month was 23.5C at Manston (Kent) on the 16th; the lowest -5.0C at Tulloch Bridge (Invernessshire) on the 30th, in a brief northerly outbreak.
November. A changeable start, with mild westerlies, followed by high pressure, with a cold final week, with some snow. Overall the month was slightly cooler than average. The warmest days saw 16.2C at Aboyne (Aberdeenshire) on the 1st and 16.8C at Chivenor (Devon) on the 2nd; the lowest minimum was -6.9 Â°C at Bewcastle (Cumbria) on the 30th. Much of the country failed to exceed 3C on the 30th. It was in the north and west and dry in the east and south, giving an overall England and Wales average of 79%. Essex was particularly dry with some places having less than 20 mm. It was mostly a sunny month, some places seeing more sunshine than October, with 121% of the average.
December. A mixed month, with spells of cold and less cold weather cancelling each other out. There were two named storms, Caroline on the 7th and Dylan on the 30th. It was quite snowy in central Britain from the 8th to the 16th. It was a green, mild Christmas, although it turned slightly colder afterwards. Temperatures overall were close to average, although it was quite mild in the SW. Overall rainfall was close to average, but it was quite dry in east Scotland and NE England. It was though a sunny month, 115% of average, and very sunny in the the NE and in central Scotland. The highest temperature of the month was 15.2C at Cassley (Sutherland) on the 12th, and the lowest was -13.0C at Shawbury (Shropshire) on the 12th; the latter was the lowest temperature of the year in the UK.