End of June statistics
While June 2020 overall was not a record-breaking month, it has been notable for many, with some heavy rainfall at times. And, despite cooler days in the inclement weather, there was a notable heatwave and there have been some warmer than average nights.
Early in June there was a gradual breakdown of the high-pressure system which was responsible for bringing us the sunniest spring and the driest May since records began.
The breakdown allowed a return to Atlantic weather systems, bringing unsettled weather across the UK. Low pressure prevailed for much of the month, with spells of heavy rain and showers for many, triggering Met Office rain and thunderstorm warnings at times. However a spell of hot weather saw temperatures reach 33.4 at Heathrow on 25th.
The June rainfall was above average across most of the UK with especially large accumulations in the South West and South Wales.
|Actual rainfall||% of the June average|
|Northern Ireland||124.3 mm||163.0|
Based on the 1981 to 2010 long-term average
Cornwall recorded 143.3mm, over twice the county’s average monthly rainfall – making it the fifth wettest June on record for the county, South Glamorgan recorded 144.8mm – again around twice the expected monthly rainfall – making it the 7th wettest on record, while Devon has seen its 8th wettest June with 142.1mm recorded, also around twice the expected monthly rainfall (data back to 1862).
Although Cumbria as a whole recorded 151mm of rainfall, its 13th wettest June on record, Honister Pass Environment Agency rain gauge recorded 212.8mm of rainfall on 28th June (24-hour total) breaking the wettest June day on record. It was also the wettest day of 2020 so far. Sutton Bonington (Notts) also had their wettest June day in nearly 100 years, with 46.2mm falling on the 17th.
Daytime maximum and mean temperatures have been above average for June for much of the UK, but not record breaking. Heatwave conditions were briefly reached in parts of the country in the week of the 19th June , while there were also some warm nights with Gosport, Hampshire and Hastings, East Sussex, not seeing temperatures drop below 20.0°C on the night of 25th June making it a ‘tropical night’. This term describes days when the temperature does not fall under 20.0° C during the night-time. The Met Office began tracking ‘tropical nights‘ in 2018. This criterion is infrequently met and usually quite localised.
|Maximum temperature||Minimum temperature|
|Provisional June figures||Actual °C||Difference from June average °C||Actual °C||Difference from June average °C|
Based on the 1981 to 2010 long-term average
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