JUNE WARMER, WETTER, AND DULLER THAN AVERAGE
Armagh Observatory, tenth July 2025: Armagh Observatory reviews that June 2025 was hotter, wetter, and duller than common. With a mean temperature of roughly 15.3 levels Celsius (59.6 Fahrenheit), this was the twelfth warmest June on file at Armagh and the warmest for 2 years, that’s, because the exceptionally heat June 2023 (17.4 C). With 88.0 mm of precipitation it was additionally the wettest June at Armagh for six years.
Campbell-Stokes sunshine recorder on the Armagh Observatory
The typical temperature was roughly 1.9 C hotter than the 225-year long-term (1796–2020) June common at Armagh (13.43 C) and almost 1.3 C hotter than the newest (1991–2020) 30-year common (14.05 C). This June continued a development that has seen a gradual enhance in latest imply June temperatures at Armagh. 5 of the final six Junes have had imply temperatures better than the newest (1991–2020) 30-year June common, and over the past forty years the 30-year common June temperatures have elevated from 13.55 C to 14.05 C, similar to a mean enhance in imply June temperatures at Armagh of 0.5 C.
This month was outstanding in recording a short-lived warmth wave and several other very heat nights. Whereas the common each day most air temperature was an unexceptional 19.3 C, although nonetheless 1.0 C hotter than the corresponding most up-to-date (1991–2020) 30-year common, the common minimal or nighttime air temperature was 11.4 C, roughly 1.5 C hotter than the corresponding most up-to-date 30-year common.
This June, the distinction between the common day and nighttime temperatures seems to have been as a consequence of clouds, which within the case of a heat, uninteresting month have a tendency to cut back most daytime temperatures while elevating nighttime minima. The typical minimal air temperature at Armagh was the third warmest on file, the three warmest such averages now being June 1846 (12.2 C), June 2023 (12.0 C), and June 2025 (11.4 C).
The UK Meteorological Workplace defines a warmth wave in Northern Eire to be any interval of at the least three consecutive days when the utmost each day temperature meets or exceeds 25.0 C (77.0 F). This situation was met through the three-day interval starting nineteenth June 2025. The very best most temperature was 29.3 C on the twentieth, bounded by 25.4 C on each the nineteenth and twenty first. The twentieth is now the warmest day of the 12 months and the seventh warmest June day on file at Armagh. The very heat spell this June was the warmest sequence of June days at Armagh for seven years, that’s, because the twenty seventh to the twenty ninth of June 2018, which noticed most temperatures at Armagh of 30.4 C, 30.2 C, and 29.8 C respectively.
The warmest evening, or highest minimal air temperature, was 17.0 on the thirtieth, adopted by 16.4 C on the twenty first and 16.1 C on the twenty eighth. The thirtieth, surpassed by the distinctive 17.2 C recorded on twenty fourth June 2023, was the second warmest evening on file at Armagh, shared with the twenty eighth of June 1957.
The best day, or lowest most air temperature, was the 4th (13.9 C), adopted by the ninth (14.4 C) and each the seventh and eighth (14.8 C). The best evening, or lowest minimal air temperature, was the sixth (5.7 C), adopted by the eighth (6.9 C) and the 2nd (7.4 C).
There was only one evening with floor frost, that’s, an evening with a grass-minimumtemperature lower than or equal to zero Celsius. This was -1.7 C on the sixth. The next lowest grass-minimum temperatures have been 1.4 C on the 2nd and three.6 C on each the 4th and fifth. There have been no night-time air frosts. Thunder was heard on the afternoon of the sixth, and swallows and swifts seen on quite a few days.
Complete precipitation was 88.0 mm together with two hint values, that’s, 87.9 mm if hint values are ignored. That is roughly 38% greater than the 183-year long-term (1838–2020) June precipitation at Armagh (63.7 mm) and 40% greater than the newest (1991–2020) 30-year June common (62.9 mm). This was the wettest June at Armagh for six years, that’s, since 105.1 mm together with 4 hint values was recorded in June 2019.
The wettest day was the twelfth with 18.7 mm of rainfall, adopted by the 14th with 13.4 mm and the ninth with 11.9 mm. With 134.8 hours of robust sunshine, June 2025 was quite duller than common, roughly 84% of the 140-year long-term (1881–2020) common at Armagh (159.7 hours) and 93% of the newest (1991–2020) 30-year common (144.6 hours). It’s attention-grabbing to notice that through the first almost 90 years of the Observatory’s instrumental sunshine file, that’s, from 1881 to 1970, the common variety of hours of robust sunshine throughout June was roughly 165 hours, whereas through the subsequent 50 years from 1971 to 2020 it fell sharply to a mean of almost 145 hours, suggesting both an unknown situation with publicity of the sunshine recorder or that Junes at Armagh have turn out to be cloudier than, say, 100 years in the past.
This month the sunniest day was the tenth with 10.3 hours of robust sunshine, adopted by the nineteenth with 10.1 hours and the seventeenth with 9.8 hours.
These information consult with observations at Armagh Observatory, which has been recording the climate at Armagh since 1795.
FOR FURTHER INFORMATION PLEASE CONTACT: Mark Bailey on the Armagh
Observatory, Faculty Hill, Armagh, BT61 9DG. Tel.: 028-3752-2928;
mark.bailey@armagh.ac.uk; URL:
