Daily Report for 19th May 2026

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 11.1 °C (+1.7) 01:58 7.7 °C (-0.7) 13.5 °C (+4.1), 2022 6.2 °C (-3.2), 2018
Maximum Temperature 18.3 °C (+0.2) 13:11 16.8 °C (-0.4) 26.2 °C (+8.1), 2020 14.3 °C (-3.8), 2015
Mean Temperature 14.1 °C (+1.0) 12.3 °C (-0.5) 19.4 °C, 2014 10.1 °C, 2015
Minimum Humidity 61% 13:58 50% 61%, 2026 31%, 2014
Maximum Humidity 91% 08:41 86% 96%, 2019 77%, 2015
Mean Humidity 78% 69% 81%, 2019 54%, 2014
Minimum Pressure 1008 hPa 10:56 1011 hPa 1029 hPa, 2010 1000 hPa, 2015
Maximum Pressure 1013 hPa 00:03 1015 hPa 1031 hPa, 2010 1007 hPa, 2014
Mean Pressure 1010 hPa 1013 hPa 1030 hPa, 2010 1004 hPa, 2014
Mean Wind Speed 8.3 mph (+3.6) 4.1 mph (-0.6) 8.3 mph, 2026 1.2 mph, 2019
Maximum Wind Speed 19.4 mph 12:03 12.6 mph 19.4 mph, 2026 7.7 mph, 2017
Maximum Gust 32.3 mph 12:04 20.0 mph 32.3 mph, 2026 10.9 mph, 2011
Mean Wind Direction SW
Rainfall 2.0 mm 11.2 mm (40%) 3.3 mm, 2015
Maximum Hourly Rain 0.6 mm 07:38 2.4 mm, 2015
Maximum 10-min Rain 0.2 mm 07:12 2.2 mm, 2015
Maximum Rain Rate 0.6 mm/h 07:38 36 mm/h, 2015
Minimum Dew Point 7.4 °C 00:03 3.7 °C 7.8 °C, 2020 1.4 °C, 2015
Maximum Dew Point 12.9 °C 11:32 9.3 °C 15.4 °C, 2024 5.6 °C, 2015
Mean Dew Point 10.2 °C 6.5 °C 11.8 °C, 2020 3.4 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 11.1 °C 01:58 8.0 °C 13.5 °C, 2022 6.2 °C, 2018
Day Maximum (09-21) 18.3 °C 13:12 16.8 °C 26.2 °C, 2020 14.3 °C, 2015
Max 10m Temp Rise 0.6 °C 11:38 0.8 °C 1.3 °C, 2009 0.5 °C, 2013
Max 1hr Temp Rise 2.3 °C 12:20 2.6 °C 4.3 °C, 2011 1.4 °C, 2016
Max 1hr Hum Rise 12% 16:11 12% 25%, 2015 6%, 2009
Max 10m Temp Fall 0.7 °C 15:32 0.9 °C 3.1 °C, 2015 0.3 °C, 2010
Max 1hr Temp Fall 1.8 °C 16:16 2.1 °C 4.6 °C, 2015 1.3 °C, 2009
Max 1hr Hum Fall 19% 12:32 13% 19%, 2014 6%, 2013
Max 10m Wind Speed 14.0 mph 17:48 9.3 mph 14.0 mph, 2026 5.1 mph, 2019
Minimum Feels-like 11.6 °C 01:33 6.2 °C 15.7 °C, 2022 3.7 °C, 2015
Maximum Feels-like 20.0 °C 13:09 17.3 °C 29.8 °C, 2020 14.3 °C, 2015
Mean Feels-like 15.5 °C 12.5 °C 21.6 °C, 2020 8.9 °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 7.2 °C (-1.5) 9.1 °C (+0.3) 14.9 °C (+6.2), 2018 6.0 °C (-2.7), 2017
Humidity Range 30% 36% 60%, 2018 28%, 2023
Pressure Range 5 hPa 4 hPa 10 hPa, 2015 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 1.6 [11%]101 hrs (89%) [38%] 14.3 [100%], 2018 0.3 [2%], 2019
Wet Hours 5
[Mean rain rate: 0.4 mm/h]		19 hrs (78%) [4.2%] 5, 2026 0, 2010
Cloud Cover unknown
Events None
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 13.5 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 19th 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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