Another month of two halves. The first half unsettled and wet at times - especially the first week - with at or just below average temperatures, and breezy at times. A different story in the second half, with warm or very warm temperatures, a seven-day heatwave (including a run of four days with temperatures 30+), some warm nights and largely dry after the 16th. The very warm spell ended on the 27th when temperatures became more seasonal. Night-time thunderstorm in the early hours of the 26th provided a very good lightning display but very little rain.
Anomalies (in brackets) refer to the estimated 1991-2020 averages.
Mean max: 22.0 (+2.7)
Mean min: 12.7 (+3.2)
Mean temp: 17.3 (+2.9)
Mean 30cm earth temp: 17.4
Highest max: 32.2 (25th)
Lowest max: 16.3 ( 7th)
Lowest min: 8.0 (10th)
Highest min: 18.6 (26th)
Lowest grass min: 3.5 (10th)
Air frosts: 0 ( 0)
Air frost hours: 0.0
Ground frosts: 0 ( 0)
Days with max 30.0 to 34.9: 4
Days with max 25.0 to 29.9: 3
Days with max 20.0 to 24.9: 10
Days with max 15.0 to 19.9: 13
Days with min 15.0 to 19.9: 8
Days with min 10.0 to 14.9: 15
Days with min 5.0 to 9.9: 7
Total rainfall: 78.6 mm (131%)
Wettest day: 34.7 mm ( 1st)
Rain days (0.2 mm or more): 17 (+4)
Wet days (1.0 mm or more): 12 (+3)
Days >= 10mm: 1 (-1)
Days >= 20mm: 1
Days with snow/sleet falling: 0
Days with 50%+ snow cover at 09z: 0 (0)
Deepest at 0900z 0 cm (n/a)
Days with thunder heard: 1
Days with hail: 0
Days with fog at 0900z: 0
Highest 10-min mean wind: 21 kn ( 9th)
Max gust: 34 kn ( 3rd)
Days with gale: 0
Highest wind run: 267.5 nm (12th)
Wind direction at 0900z: N: 1; NE: 1; E: 2; SE: 3; S: 3; SW: 4; W: 13; NW: 3; Calm: 0
Maximum pressure: 1026.8 (21st)
Minimum pressure: 990.8 ( 4th)