Daily Report for 6th May 2023

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.3 °C (+2.6) 06:08 9.2 °C (+1.7) 12.0 °C (+4.3), 2014 2.8 °C (-4.9), 2021
Maximum Temperature 14.9 °C (-1.7) 10:24 16.7 °C (+0.2) 24.6 °C (+8.0), 2018 8.7 °C (-7.9), 2012
Mean Temperature 13.3 °C (+0.4) 13.0 °C (+0.9) 17.3 °C, 2011 6.8 °C, 2012
Minimum Humidity 84% 00:04 65% 87%, 2024 32%, 2011
Maximum Humidity 94% 07:11 90% 96%, 2024 70%, 2011
Mean Humidity 90% 79% 92%, 2024 48%, 2011
Minimum Pressure 1014 hPa 19:05 1017 hPa 1026 hPa, 2020 1001 hPa, 2015
Maximum Pressure 1016 hPa 00:00 1023 hPa 1027 hPa, 2020 1007 hPa, 2014
Mean Pressure 1015 hPa 1020 hPa 1026 hPa, 2020 1004 hPa, 2015
Mean Wind Speed 4.1 mph (-0.6) 5.8 mph (+1.1) 11.4 mph, 2015 2.0 mph, 2016
Maximum Wind Speed 11.1 mph 16:23 13.6 mph 22.5 mph, 2015 8.7 mph, 2016
Maximum Gust 17.3 mph 12:48 20.8 mph 34.2 mph, 2015 13.1 mph, 2010
Mean Wind Direction SW
Rainfall 4.3 mm 4.5 mm (51%) 12.9 mm, 2015
Maximum Hourly Rain 1.2 mm 12:56 7.5 mm, 2015
Maximum 10-min Rain 0.5 mm 12:44 5.0 mm, 2015
Maximum Rain Rate 3.6 mm/h 15:21 78 mm/h, 2015
Minimum Dew Point 8.7 °C 05:32 7.0 °C 8.7 °C, 2023 -1.5 °C, 2021
Maximum Dew Point 12.9 °C 19:04 11.2 °C 13.0 °C, 2024 3.1 °C, 2012
Mean Dew Point 11.7 °C 9.3 °C 11.7 °C, 2023 1.9 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.3 °C 06:09 9.4 °C 12.4 °C, 2014 2.8 °C, 2021
Day Maximum (09-21) 14.9 °C 10:26 16.7 °C 24.6 °C, 2018 8.7 °C, 2012
Max 10m Temp Rise 0.5 °C 07:19 0.6 °C 1.3 °C, 2018 0.4 °C, 2012
Max 1hr Temp Rise 2.0 °C 07:59 2.0 °C 4.1 °C, 2018 1.2 °C, 2012
Max 1hr Hum Rise 4% 06:03 8% 23%, 2021 4%, 2023
Max 10m Temp Fall 0.4 °C 05:15 0.5 °C 1.5 °C, 2021 0.3 °C, 2017
Max 1hr Temp Fall 1.5 °C 05:40 1.6 °C 3.6 °C, 2021 1.0 °C, 2024
Max 1hr Hum Fall 6% 08:17 8% 21%, 2021 4%, 2024
Max 10m Wind Speed 7.3 mph 12:49 10.5 mph 18.0 mph, 2015 6.4 mph, 2016
Minimum Feels-like 11.0 °C 06:02 8.1 °C 12.0 °C, 2014 0.5 °C, 2020
Maximum Feels-like 17.6 °C 10:24 18.5 °C 26.0 °C, 2018 8.7 °C, 2012
Mean Feels-like 15.5 °C 13.7 °C 17.4 °C, 2011 5.4 °C, 2012
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.6 °C (-4.3) 7.6 °C (-1.4) 16.8 °C (+7.9), 2018 4.6 °C (-4.3), 2012
Humidity Range 10% 25% 52%, 2022 9%, 2024
Pressure Range 2 hPa 6 hPa 9 hPa, 2015 2 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.1 [1%]29 hrs (83%) [36%] 13.7 [100%], 2018 0 [0%], 2012
Wet Hours 7
[Mean rain rate: 0.6 mm/h]
7.5 hrs (97%) [5.2%] 8, 2024 0, 2009
Cloud Cover unknown
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 14.5 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 6th May 2023.
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

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