Daily Report for 22nd May 2026


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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 12.7 °C (+2.9) 02:25 8.3 °C (-0.2) 14.2 °C (+4.4), 2020 4.8 °C (-5.0), 2025
Maximum Temperature 28.6 °C (+10.2) 16:03 17.9 °C (+0.5) 28.6 °C (+10.2), 2026 14.2 °C (-4.2), 2013
Mean Temperature 21.7 °C (+6.6) 13.2 °C (+0.1) 21.7 °C, 2026 10.7 °C, 2021
Minimum Humidity 40% 16:56 50% 91%, 2024 35%, 2011
Maximum Humidity 83% 05:49 85% 96%, 2024 75%, 2020
Mean Humidity 59% 69% 94%, 2024 54%, 2019
Minimum Pressure 1025 hPa 18:08 1013 hPa 1027 hPa, 2010 997 hPa, 2021
Maximum Pressure 1027 hPa 00:02 1017 hPa 1031 hPa, 2010 1003 hPa, 2014
Mean Pressure 1026 hPa 1015 hPa 1029 hPa, 2010 1001 hPa, 2014
Mean Wind Speed 4.1 mph (-0.6) 4.3 mph (-0.4) 9.1 mph, 2011 2.0 mph, 2025
Maximum Wind Speed 13.9 mph 16:21 13.0 mph 21.0 mph, 2011 9.4 mph, 2010
Maximum Gust 21.9 mph 16:22 20.7 mph 33.8 mph, 2011 13.6 mph, 2010
Mean Wind Direction SW
Rainfall 0.0 mm 11.4 mm (35%) 12.1 mm, 2024
Maximum Hourly Rain n/a 3.4, 2024
Maximum 10-min Rain n/a 1.7, 2014
Maximum Rain Rate n/a 66, 2024
Minimum Dew Point 9.2 °C 02:09 4.4 °C 11.6 °C, 2024 0.0 °C, 2013
Maximum Dew Point 15.4 °C 14:28 10.0 °C 15.5 °C, 2012 8.2 °C, 2009
Mean Dew Point 12.7 °C 7.2 °C 12.9 °C, 2024 5.4 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 12.7 °C 02:23 8.6 °C 17.2 °C, 2020 4.8 °C, 2025
Day Maximum (09-21) 28.6 °C 16:03 17.9 °C 28.6 °C, 2026 14.2 °C, 2013
Max 10m Temp Rise 0.9 °C 07:09 0.8 °C 1.0 °C, 2012 0.2 °C, 2024
Max 1hr Temp Rise 4.3 °C 07:36 2.7 °C 4.3 °C, 2026 0.6 °C, 2024
Max 1hr Hum Rise 11% 22:28 12% 21%, 2014 2%, 2024
Max 10m Temp Fall 0.5 °C 22:07 0.8 °C 2.3 °C, 2014 0.3 °C, 2015
Max 1hr Temp Fall 1.8 °C 22:10 2.1 °C 4.4 °C, 2014 0.7 °C, 2024
Max 1hr Hum Fall 13% 07:52 12% 24%, 2022 3%, 2024
Max 10m Wind Speed 10.1 mph 17:06 9.6 mph 14.7 mph, 2020 6.2 mph, 2012
Minimum Feels-like 13.6 °C 02:11 7.2 °C 15.2 °C, 2020 3.6 °C, 2025
Maximum Feels-like 32.4 °C 14:33 18.7 °C 32.4 °C, 2026 14.2 °C, 2013
Mean Feels-like 24.4 °C 13.6 °C 24.4 °C, 2026 9.8 °C, 2021
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 15.9 °C (+7.3) 9.5 °C (+0.7) 15.9 °C (+7.3), 2026 1.9 °C (-6.7), 2024
Humidity Range 43% 36% 58%, 2022 5%, 2024
Pressure Range 2 hPa 4 hPa 13 hPa, 2021 2 hPa, 2026
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 14.3 [99%]126 hrs (95%) [41%] 14.5 [100%], 2010 0 [0%], 2024
Wet Hours 020 hrs (70%) [3.8%] 12, 2024 0, 2009
Cloud Cover unknown
Events Maximum possible sunshine
Comments data is awaiting quality control from site operator
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 21.7 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 22nd May 2026.
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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Wind rose