Daily Report for 8th May 2022

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 9.5 °C (+1.5) 07:58 9.9 °C (+2.2) 14.6 °C (+6.6), 2011 6.7 °C (-1.3), 2010
Maximum Temperature 18.1 °C (+1.2) 16:16 18.0 °C (+1.4) 26.8 °C (+9.9), 2018 9.4 °C (-7.5), 2010
Mean Temperature 13.2 °C (+1.4) 13.4 °C (+1.8) 20.1 °C, 2016 7.9 °C, 2010
Minimum Humidity 53% 14:12 57% 73%, 2010 27%, 2016
Maximum Humidity 87% 00:06 89% 95%, 2012 67%, 2016
Mean Humidity 72% 76% 84%, 2019 45%, 2016
Minimum Pressure 1029 hPa 19:10 1023 hPa 1029 hPa, 2022 992 hPa, 2019
Maximum Pressure 1031 hPa 09:05 1026 hPa 1031 hPa, 2022 1007 hPa, 2019
Mean Pressure 1030 hPa 1025 hPa 1030 hPa, 2022 995 hPa, 2019
Mean Wind Speed 2.1 mph (-2.6) 2.3 mph (-2.4) 8.4 mph, 2021 2.0 mph, 2020
Maximum Wind Speed 10.3 mph 15:20 9.8 mph 21.6 mph, 2021 8.2 mph, 2020
Maximum Gust 16.0 mph 01:13 14.8 mph 34.2 mph, 2021 13.6 mph, 2010
Mean Wind Direction ESE
Rainfall 0.0 mm 4.3 mm (36%) 13.6 mm, 2019
Maximum Hourly Rain n/a 3.5, 2019
Maximum 10-min Rain n/a 1.8, 2019
Maximum Rain Rate n/a 26, 2019
Minimum Dew Point 6.6 °C 23:41 7.1 °C 7.9 °C, 2018 -1.7 °C, 2021
Maximum Dew Point 10.1 °C 00:04 11.1 °C 14.2 °C, 2011 5.4 °C, 2017
Mean Dew Point 8.1 °C 9.2 °C 10.6 °C, 2018 3.4 °C, 2017
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 9.5 °C 07:59 10.0 °C 15.0 °C, 2011 6.7 °C, 2010
Day Maximum (09-21) 18.1 °C 15:15 18.0 °C 26.8 °C, 2018 9.4 °C, 2010
Max 10m Temp Rise 0.6 °C 11:19 0.6 °C 1.0 °C, 2018 0.2 °C, 2010
Max 1hr Temp Rise 2.2 °C 09:05 1.9 °C 5.0 °C, 2020 0.9 °C, 2010
Max 1hr Hum Rise 10% 20:47 11% 23%, 2021 3%, 2017
Max 10m Temp Fall 0.6 °C 15:26 0.6 °C 1.4 °C, 2019 0.2 °C, 2010
Max 1hr Temp Fall 2.0 °C 20:35 2.1 °C 3.3 °C, 2020 0.7 °C, 2010
Max 1hr Hum Fall 11% 09:18 10% 27%, 2009 4%, 2010
Max 10m Wind Speed 6.0 mph 15:29 7.2 mph 17.8 mph, 2021 6.0 mph, 2022
Minimum Feels-like 7.4 °C 07:41 9.6 °C 15.0 °C, 2011 3.4 °C, 2017
Maximum Feels-like 19.0 °C 16:12 19.5 °C 29.9 °C, 2018 8.1 °C, 2010
Mean Feels-like 13.6 °C 14.4 °C 20.3 °C, 2016 6.1 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 8.6 °C (-0.3) 8.2 °C (-0.8) 17.1 °C (+8.2), 2018 2.7 °C (-6.2), 2010
Humidity Range 34% 32% 57%, 2018 12%, 2017
Pressure Range 3 hPa 3 hPa 15 hPa, 2019 3 hPa, 2022
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 12 [87%]34 hrs (72%) [31%] 13 [94%], 2016 0 [0%], 2010
Wet Hours 06 hrs (58%) [3.1%] 11, 2019 0, 2016
Cloud Cover Sunny
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 16.0 °C
Notes
Times of extremes are computed using the midpoint of the longest continuous period at that extreme value.
Cumulative anomalies are reported according to the expected value for the month-to-date rather than month-end.
Sun hrs are initially pulled from the official weather station at Heathrow, and later adjusted by hand to reflect local conditions based on webcam observations. Wet hrs are dervied algorithmically from rainfall data, though may be adjusted manually. Cloud cover and Events are manually reported, often with multi-week delays.
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Webcam Summary of Cloud Conditions

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