Exceptionally Warm and Sunny July

Armagh Observatory reports that July was much warmer, sunnier and slightly drier than average.

The mean monthly temperature was 18.2 degrees Celsius (approximately 65 degrees Fahrenheit), which is some 2.5 degrees C higher than the most recent (1981-2010) 30-year average July temperate at Armagh. This equals the previous record mean July temperature at Armagh established in 1989. The four warmest July temperatures at Armagh are now 2013 and 1989 (equal 18.2 degrees Celsius), and 2006 and 1983 (equal 18.0 degrees Celsius).

The highest temperature recorded was 29.5 degrees C, on the 19th, making this the fifth highest July temperature recorded at Armagh since the Armagh series of maximum daily temperatures was established in August 1843. This maximum temperature equals that of 17th July 2006, the four higher maximum July temperatures being those of 10th July 1934 (30.3 deg. C), 13th July 1983 (30.0 deg. C), 18th July 2006 (29.9 deg. C), and 19th July 2006 (29.6 deg. C).

The total number of hours sunshine was 228.1, that is, about 66% more than the most recent 30-year average. July 2013 is now the third sunniest July on record at Armagh, that is since the record of daily sunshine hours at Armagh began towards the end of April 1880. The two sunnier July months are those of 1989 and 2006, with 243.8 and 228.3 hours respectively.

The minimum air temperature was 10.0 deg. C (1st). There were six days when the maximum temperature exceeded 26.7 Celsius (approximately 80 degrees Fahrenheit), namely the 8th, 9th, 11th, 12th, 18th and 19th.

Rainfall amounted to 54.6 mm (2.15 inches), which is about 12% lower than the most recent 30-year (1981-2010) average for July.

These data refer to observations at Armagh Observatory, which has been recording the weather at Armagh since 1795.

FOR FURTHER INFORMATION PLEASE CONTACT: John McFarland at the Armagh Observatory, College Hill, Armagh, BT61 9DG. Tel.: 028-3752-2928; FAX: 028-3752-7174; jmfat signarm.ac.uk; URL: climate.arm.ac.uk.

Last Revised: 2013 February 4th