September 2021 was the second-warmest on report within the UK and the warmest ever recorded in Northern Eire, provisional Met Workplace figures present.
The imply temperature of 14.7C for the UK was solely barely cooler than the 15C determine that was recorded in August.
The UK’s warmest September was in 2006 when the imply temperature reached 15.2C, the Met Workplace stated.
Dr Mark McCarthy, head of the Met Workplace’s Nationwide Local weather Data Centre, described this September as being “an exceptionally heat month for the UK”.
He stated the month noticed “persistent above-average temperatures” till weather situations modified proper on the finish.
Heat nights helped Northern Eire to its joint-warmest September on report, with imply temperatures of 14.2C, which matched these recorded in 2006.
The very best common minimal temperature in Northern Eire in September was a report determine of 10.7C, topping the ten.5C reached in 2006.
The Met Workplace stated that final month, which got here on the again of a extra subdued August, noticed the UK as an entire take pleasure in its second-warmest September based mostly on figures courting again to 1884.
The imply temperature in September was 13C in Scotland, 14.8C in Wales and 15.8C in England.
Dr McCarthy stated: “Curiously, the exceptionally heat begin of the month at one time threatened to push September’s common temperature figures above August’s, however the current unsettled climate and drop to extra common situations have pushed the figures barely beneath August’s, however nonetheless properly above the long-term common.
“Excessive stress dominated for a lot of the early a part of the month, which introduced with it heat, sunny spells and calm situations.
“Though that very warm warmth subsided, the temperature remained above common for a superb portion of the month, earlier than a extra unsettled breakdown late within the month and extra low-pressure techniques transferring in to the UK.”
Glasgow, which is internet hosting the COP26 local weather change talks in November, recorded its joint hottest September with a temperature of 14.9C, matching the highest determine courting from 2006, the Met Workplace stated.
Regardless of final month being Northern Eire’s joint warmest, it was additionally a very boring time because the hours of sunshine have been the bottom since 1965. There was a median of simply 74.3 hours.
Temperatures of greater than 30C have been recorded in some locations early in September.
Wales topped 30C in September for the primary time since 1961, when Dyfed was basking in sunshine on 7 September.
This was nonetheless shy of the all-time September temperature report in Wales of 32.3C set at Hawarden Bridge on 1 September 1906.
Different scorching days included 7 and eight September when 27.2C was recorded in Plymouth, 27.1C in Eskdalemuir and 25.8C in Balmoral.