1995 British Isles heatwave explained

1995 British Isles heat wave
Start Date:28 June 1995
End Date:22 August 1995
Areas:United Kingdom and Ireland
Highest Temp C:35.2
Highest Temp Location:Boxworth, Cambridgeshire[1]

The 1995 British Isles heatwave occurred between late July and late August. It was part of one of the warmest summers recorded in the UK,[2] and one of the warmest Augusts ever recorded in many locations around the UK, as well as being one of the driest summers ever recorded in the UK; many weather stations recorded the summer of 1995 as drier than, or comparable with, the summer of 1976.[2] Ireland was also widely affected by the heatwave with temperatures reaching over 30C in some locations, as well as exceptionally low rainfall throughout the summer.[3]

United Kingdom

In the United Kingdom, the heat wave of 1995 currently marks the warmest August on record, and the third-warmest summer overall, behind 1976 and 1826. The CET Central England station recorded a daily mean temperature of 19.2C[4] and a mean daily maximum temperature of 25.1C[5] in August, and a daily mean temperature of 17.37C for the entire summer.[6]

Before the heatwave formed, a mini-heatwave occurred between 28 and 30 June, with a highest temperature recorded during this short period of 33.8C recorded on 30 June 1995 at Barbourne, Worcester.[1] Low rainfall was also widely recorded around the nation during the month of June, many stations reporting less than 50% of its average rainfall, with some locations reporting less than 20%.[2]

StationCounty / UAJune 1995 rainfall amount[7]
ArmaghCounty Armagh28.9mm
Bradford Lister ParkWest Yorkshire11mm
Cardiff Bute ParkCardiff8.9mm
DurhamCounty Durham16.2mm
HeathrowGreater London12mm
RingwayGreater Manchester27.9mm
ShawburyShropshire13.2mm
SheffieldSouth Yorkshire11.3mm
SouthamptonSouthampton11.2mm
Sutton BoningtonNottinghamshire11.7mm
WaddingtonLincolnshire17.8mm
WhitbyNorth Yorkshire25.6mm
YeoviltonSomerset10.8mm
July 1995 then continued the hot weather, with an average daily temperature of 18.6C meaning that it is the seventh-warmest July in the CET records back to 1659.[8] It was very dry too, with most places recording less than 30% of average rainfall.[9] Days frequently reached above 30C, culminating at 33C on the 31st. Higher temperatures were recorded in August, though.[10]

During the heatwave, many locations around the UK recorded peak temperatures at the start of August. The highest temperature recorded during the heatwave was 35.2C recorded on 1 August 1995 at Boxworth, Cambridgeshire.[1] After this, most of the United Kingdom was still under warm temperatures around or above 25C, until temperatures rose again as high as 33.8C which was recorded at Barbourne, Worcester. Toward the end of the hot spell, temperatures rose up to 30C in many parts of the country. Cheltenham in Gloucestershire recorded three consecutive days above 32C from 20 to 22 August, with the highest temperature at 33.6C on 22 August.

Much of the United Kingdom suffered drought conditions during August, with most parts of the UK recording less than 30% of its average rainfall, and most parts of England less than 20%. Many weather stations around the United Kingdom recorded no days of rain to the value of ≥ 1.0 mm.

StationCounty / UAAugust 1995 rainfall amount
AberporthCeredigion7.8mm
ArmaghCounty Armagh10.4mm
Ballypatrick ForestCounty Antrim25.2mm
Bradford Lister ParkWest Yorkshire6.7mm
BraemarAberdeenshire20.3mm
CamborneCornwall19mm
Cambridge NIABCambridgeshire5.3mm
Cardiff Bute ParkCardiff9.2mm
ChivenorDevon16.8mm
CwmystwythCeredigion24.3mm
DunstaffnageArgyll and Bute26.5mm
DurhamCounty Durham14.2mm
EastbourneEast Sussex0.7mm
EskdalemuirDumfries and Galloway24.3mm
HeathrowGreater London0.3mm
HurnDorset4.7mm
LerwickShetland49.5mm
LeucharsFife11.2mm
LowestoftSuffolk17.6mm
ManstonKent13.9mm
NairnHighland15.4mm
Newton RiggCumbria10.9mm
OxfordOxfordshire4.4mm
PaisleyRenfrewshire22.1mm
RingwayGreater Manchester17.7mm
Ross-on-WyeHerefordshire6.2mm
ShawburyShropshire7.8mm
SheffieldSouth Yorkshire12.1mm
SouthamptonSouthampton4.6mm
Stornoway AirportNa h-Eileanan Siar32.2mm
Sutton BoningtonNottinghamshire5.7mm
TireeArgyll and Bute33.8mm
ValleyAnglesey11.1mm
WaddingtonLincolnshire5.9mm
WhitbyNorth Yorkshire3.4mm
Wick AirportHighland16.8mm
YeoviltonSomerset17.4mm

Aftermath

After the heat wave ended in August, the east and south of the United Kingdom received high rainfall in September, but another dry spell occurred mainly in the east of the UK. For the rest of 1995, most of the UK received below-average rainfall. Temperatures after the heatwave remained around average for the rest of the year (with further unseasonably warm weather in October), except for a record-breaking cold spell from Christmas to New Year.[11]

Ireland

While temperatures were lower, Ireland experienced a similar weather pattern to that of the United Kingdom during the summer of 1995.

The Valentia Observatory and the weather station at Phoenix Park both recorded a daily mean temperature of 16.6C, and it was the warmest summer for over a century.

Kilkenny recorded a total of 27 days with temperatures over 25C during the heat wave, compared to the 2.5 days that the town usually records,[12] and was one of the hottest parts of the country during the heatwave, recording a maximum temperature of 30.8C. Like the United Kingdom, Ireland received exceptionally low rainfall, and it was the driest summer on record for the weather stations at Malin Head, Casement Aerodrome and Cork Airport. The overall rainfall recorded during the summer at Phoenix Park was only 65.1mm.[3]

The highest temperature recorded during the heatwave was 31.5C and was measured at Oak Park in County Carlow on 2 August.

CountyStationAugust 1995 maximum temperature[13] Date
CarlowOak Park31.5C2
ClareShannon Airport29.8C17
CorkCork Airport28C3
KilkennyKilkenny30.8C2
OffalyBirr29.4C17 / 18

Impacts

Like the United Kingdom, Ireland experienced drought conditions throughout the summer, which caused problems to potato farmers in rural areas, as they had difficulty watering crops due to water shortages. Several areas around Ireland were also issued with hosepipe bans, and residents were asked not to hose lawns due to drought conditions.

Notes and References

  1. Daily Temperature Extremes for Britain up to September 2000 . Weather . 55 . 9 . 298–315 . 10.1002/j.1477-8696.2000.tb04084.x . 2000 . Webb . Jonathan D.C. . Meaden . G. Terence. free .
  2. Web site: UK Climate Anomaly Maps . 8 July 2017.
  3. Web site: Summer 1995 . 14 April 2018 . https://web.archive.org/web/20171114154040/https://www.met.ie/climate-ireland/weather-events/Summer1995.pdf . 14 November 2017 . dead.
  4. Web site: Monthly Ranked HadCET mean . 8 July 2017.
  5. Web site: Monthly Ranked HadCET max . 8 July 2017.
  6. Web site: Seasonal HadCET mean . 8 July 2017.
  7. Web site: Historic station data. www.metoffice.gov.uk. April 12, 2018.
  8. Web site: Mean CET ranked coldest to warmest from 1659 to 2021. www.metoffice.gov.uk.
  9. Web site: UK climate averages. Met Office.
  10. Web site: Trevor Harley Home Page weather consciousness language dreams. www.trevorharley.com.
  11. Web site: UK Climate Anomaly Maps. 8 July 2017.
  12. Web site: Climatology Details Station 2138 . 14 April 2018 . https://web.archive.org/web/20180414234210/https://eca.knmi.nl//utils/calcdetail.php?seasonid=0&periodid=1981-2010&indexid=CSU&stationid=2138 . 14 April 2018 . dead.
  13. https://www.met.ie/climate-ireland/extreme_maxtemps.pdf