Daily Report for 1st June 2020

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.9 °C (-0.0) 05:33 10.9 °C (-0.1) 15.7 °C (+4.8), 2018 8.0 °C (-2.9), 2011
Maximum Temperature 24.9 °C (+5.4) 14:11 24.9 °C (+5.3) 27.4 °C (+7.9), 2019 13.3 °C (-6.2), 2016
Mean Temperature 18.5 °C (+2.7) 18.5 °C (+2.6) 20.5 °C, 2019 11.7 °C, 2015
Minimum Humidity 37% 16:28 37% 88%, 2016 31%, 2021
Maximum Humidity 83% 05:26 83% 94%, 2010 75%, 2011
Mean Humidity 59% 59% 90%, 2016 58%, 2011
Minimum Pressure 1022 hPa 17:50 1022 hPa 1027 hPa, 2011 1005 hPa, 2015
Maximum Pressure 1025 hPa 00:15 1025 hPa 1032 hPa, 2011 1015 hPa, 2015
Mean Pressure 1024 hPa 1024 hPa 1030 hPa, 2011 1012 hPa, 2015
Mean Wind Speed 4.1 mph (-0.3) 4.1 mph (-0.3) 8.5 mph, 2015 1.6 mph, 2022
Maximum Wind Speed 11.2 mph 15:58 11.2 mph 22.1 mph, 2015 7.8 mph, 2012
Maximum Gust 21.9 mph 14:43 21.9 mph 29.7 mph, 2015 10.9 mph, 2012
Mean Wind Direction ENE
Rainfall 0.0 mm 0.0 mm (0%) 5.5 mm, 2010
Maximum Hourly Rain n/a 1.4, 2010
Maximum 10-min Rain n/a 0.3, 2010
Maximum Rain Rate n/a 2, 2010
Minimum Dew Point 7.4 °C 00:00 7.4 °C 14.5 °C, 2018 2.3 °C, 2011
Maximum Dew Point 12.7 °C 10:39 12.7 °C 17.0 °C, 2018 7.5 °C, 2015
Mean Dew Point 9.8 °C 9.8 °C 15.6 °C, 2018 4.1 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.9 °C 05:32 10.9 °C 15.7 °C, 2018 8.0 °C, 2011
Day Maximum (09-21) 24.9 °C 14:12 24.9 °C 26.4 °C, 2019 13.3 °C, 2016
Max 10m Temp Rise 0.8 °C 11:26 0.8 °C 0.9 °C, 2009 0.2 °C, 2010
Max 1hr Temp Rise 2.7 °C 08:58 2.7 °C 4.2 °C, 2011 0.5 °C, 2016
Max 1hr Hum Rise 7% 01:07 7% 17%, 2022 2%, 2016
Max 10m Temp Fall 0.4 °C 14:28 0.4 °C 0.9 °C, 2022 0.2 °C, 2010
Max 1hr Temp Fall 1.5 °C 22:00 1.5 °C 3.4 °C, 2022 0.6 °C, 2016
Max 1hr Hum Fall 11% 11:38 11% 20%, 2021 1%, 2016
Max 10m Wind Speed 8.1 mph 14:48 8.1 mph 16.8 mph, 2015 5.7 mph, 2012
Minimum Feels-like 11.3 °C 05:21 11.3 °C 19.4 °C, 2018 5.2 °C, 2015
Maximum Feels-like 26.8 °C 14:19 26.8 °C 30.0 °C, 2019 15.3 °C, 2016
Mean Feels-like 19.7 °C 19.7 °C 23.3 °C, 2018 11.1 °C, 2015
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 14.0 °C (+5.4) 14.0 °C (+5.4) 15.5 °C (+6.9), 2019 2.1 °C (-6.5), 2016
Humidity Range 46% 46% 53%, 2021 3%, 2016
Pressure Range 3 hPa 3 hPa 10 hPa, 2015 1 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 14.8 [100%]15 hrs (232%) [100%] 14.8 [100%], 2020 0 [0%], 2010
Wet Hours 00 hrs (0%) [0%] 6, 2010 0, 2009
Cloud Cover Sunny
Events Maximum possible sunshine
Comments -
Extra Comments
Issues no pond temp due to covid
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 5.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 1st June 2020.
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 derived based on analysis of webcam observations, but may use data from our closest site, Heathrow, when needed.
Wet hrs are dervied algorithmically from rainfall data, though may be adjusted manually.
Rainfall totals may be manually adjusted after the fact to correct delayed or erroneous data.
Cloud cover and Events are manually reported, often with multi-week delays.
Data is generally reliable and accurate but should always be viewed with some quantity of salt to hand.
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Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose