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Statistics & Summaries May 2014

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  • Location: Llanwnnen, Lampeter, Ceredigion, 126m asl (exotic holidays in Rugby/ Coventry)
  • Location: Llanwnnen, Lampeter, Ceredigion, 126m asl (exotic holidays in Rugby/ Coventry)

    Llanwnnen, Lampeter, Ceredigion, Wales 126masl


    Dull and wet but mild


    Overall an unsettled but warmer than average May this. There was a short dry, very warm and quite sunny spell mid month, but with otherwise mediocre and, at times, wet weather.


    1st – 4th: Mainly dry after a little rain 1st. Mild with a few sunny intervals


    5th – 13th: Rather cloudy spell with rain at times, some heavy. 17.4mm 10th. Temperatures close to average but cool 10th/ 11th maxima around 13c. It was also quite windy at times.


    14th – 18th: Dry and warm/ very warm with plenty of sunshine. High pressure over southern UK some decent sunny periods, and quite high temperatures by day but some clear, cool nights. 15th to 18th all reached above 20c, there were 2 likely ground frosts on 14th and 17th when it got down close to 2c, although I did not have a thermometer on the lawn and was not up early enough to witness this!


    19th – 21st: Warm, and unsettled with some showery rain. It continued warm, the months highest reading of 22.4c 19th. The 19th also saw several thunderstorms pass by, with some much more distant ones just after midnight which nevertheless produced spectacular lightning. However, rainfall amounts during this period were only small and 21st was dry and sunny.


    22nd – 25th: Dull, rather cool and unsettled. Less than one hours sun in total for these 4 days, with heavy rain at times, the months highest daily fall of 17.5mm being on 24th.


    26th – 31st: Mostly dry and sometimes warm, limited sunshine. A few spits and showers but only a few sunny intervals, light winds.


    Total rainfall: 103.2mm (134% LTA)

    Wettest day: 17.5mm 24th

    Rain days >0.2mm: 19
    Wet days >1.0mm: 15
    Days of heavy rain >10mm: 3

    Mean temperature: 11.9c

    Mean Max: 16.7c

    Mean Min: 7.1c


    High Max: 22.4c 19th
    Low Max: 12.5c 22nd
    High Min: 11.2c 20th
    Low Min: 2.2c 14th


    Est sun: 115hr

    Max sun: 12.5 hours 21st

    Days no sun: 1

    Air frost: 0

    Ground frost: 2

    Mean RH: 84%

    High RH: 100% various
    Low RH: 40% 16th

    Predominant wind direction: SW
    Mean wind speed: 3.9mph

    Mean pressure: 1015mbar 
    Max pressure: 1037mbar 15th
    Min pressure: 998mbar 10th


    Days with:

    Hail: 0
    Gale: 0
    Thunder: 1

    Lightning only: 1

    Snow or sleet 0

    Snow lying 0900: 0
    Fog: 2

    Fog at 0900: 0



    Edited by TonyH
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  • Location: just south of Doncaster, Sth Yorks
  • Location: just south of Doncaster, Sth Yorks

    Cantley May summary


    A very wet month, double my 10 year average and possibly about the 3rd ever wettest with statistics for this area back to 1942


    About average temperatures thanks to warmer nights than average


    One thunderstorm, no fog, air frost (1 ground frost) hail or snow.



    Mean T=13.5 (13.0)

    Avge Max=17.9 (17.8 )Highest=26.3 on 19th and lowest daytime max was 11.2 on 1st

    Avge Min=9.2 (8.2) Lowest overnight 0.4 on 3rd and warmest night was 27th with 11.2


    Rainfall=76.6mm (34.8 ) with 14.2mm on 22nd the wettest, 18 days with 0.2mm or more and 14 with 1.0mm or more

    Edited by johnholmes
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  • Location: Hobart, Tasmania
  • Location: Hobart, Tasmania

    Posted Image


    Hobart, Tasmania in May ( 3rd month of autumn )

    This was the sixth month in a row with above-average temperature and below-average rainfall, but not by big margins.

    Temperature anomalies ( below ) compared to period 1981-2010.


    Average maximum:  15.6 ( +0.5 )

    Average minimum:  7.7 ( +0.1 )

    Rainfall:  31mm ( average 45mm )

    Rain days ( +1mm ):  7/from 17


    May temperature extremes ( Records since 1881 )

    Highest maximum:  23.9 15th ( Record 25.7 in 1997 )

    Lowest maximum:  9.2 31st ( Record 6.1 in 1921 )

    Highest minimum:  14.9 16th ( Record 16.2 in 2005 )

    Lowest minimum:  2.4 9th ( Record -1.6 in 1902 )


    The month: Rather cold and cloudy during the first week with scattered showers, and light snow near 1000m but only for a time. Thereafter, high pressure moved in from the west - initially cool and clear, then exceptionally mild mid-month as the high settled to the east. A steady stream of weakening cold fronts however brought short periods of patchy light rain, or a shower or two as winds temporarily turned cool onshore southerly. An evening change on the 27th brought a band of rain followed by a cold but dry airmass, and clear skies to see out the month.

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  • Location: Heswall, Wirral
  • Weather Preferences: Summer: warm, humid, thundery. Winter: mild, stormy, some snow.
  • Location: Heswall, Wirral

    May 2014 Statistics

    May was a month I could describe as fairly average, though days were often just above average, nights were often below to average. There was a threat of some unseasonably cool weather towards the end of the month which never truly materialised, although the night minimums will go down as consistent low and not particularly varied, as with normal. The highest temperature was 26C.. around average in the long term expectations for May. Other than that, May was very wet, going against the grain for tradition.. which normally has May as one of the drier months of the year.

    Below are the statistics for my weather station during the month of May

    Mean Maximum: 17.4C
    Mean Minimum: 8.9C
    Overall Mean: 13.15C

    Monthly Rainfall total: 85.8mm
    Rainfall days: 16 days
    Max rainfall in one day: 13.7mm (19th May)
    Total Snowfall: 0cm
    Snowfall Days (Snow falling): 0cm
    Max snowfall in one day: 0cm

    Highest daily maximum temperature: 26.2C (19th May)
    Lowest daily maximum temperature: 12.4C (12th May) 
    Highest daily minimum temperature: 11.8C (27th May)
    Lowest daily minimum temperature: 3.5C (3rd May)

    Days with Ground Frost: 0
    Days with Air Frost: 0
    Days of falling Sn*w: 0
    Days of lying Sn*w: 0
    Thunder days: 1

    Temperature frequency breakdown

    Maximum temperature:
    10.0C to 14.9C: 10 days
    15.0C to 19.9C: 12 days
    20.0C to 24.9C: 8 days
    25.0C to 29.9C: 1 day

    Minimum temperature:
    0.0C to 4.9C: 1 day
    5.0C to 9.9C: 21 days
    10.0C to 14.9C: 9 days

    Compared to the Colwyn Bay May average (81-10 average = 11.45C), my average comes in at +1.7C above the Colwyn Bay average, making it an above average month

    Edited by SP1986
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