Daily Report for 2nd May 2024

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.7 °C (+3.4) 06:33 10.9 °C (+3.6) 13.7 °C (+6.4), 2025 2.7 °C (-4.6), 2021
Maximum Temperature 15.6 °C (-0.7) 16:41 17.7 °C (+1.3) 24.1 °C (+7.8), 2025 9.3 °C (-7.0), 2010
Mean Temperature 12.7 °C (+1.3) 14.0 °C (+2.4) 19.0 °C, 2025 7.8 °C, 2010
Minimum Humidity 82% 17:07 75% 82%, 2024 26%, 2013
Maximum Humidity 95% 08:06 95% 98%, 2014 56%, 2013
Mean Humidity 90% 87% 90%, 2024 39%, 2013
Minimum Pressure 1000 hPa 06:25 1002 hPa 1025 hPa, 2009 1000 hPa, 2024
Maximum Pressure 1007 hPa 23:29 1009 hPa 1030 hPa, 2023 1007 hPa, 2024
Mean Pressure 1003 hPa 1006 hPa 1028 hPa, 2023 1003 hPa, 2024
Mean Wind Speed 5.4 mph (+0.7) 4.2 mph (-0.5) 10.4 mph, 2011 0.6 mph, 2022
Maximum Wind Speed 15.9 mph 06:28 12.6 mph 19.7 mph, 2011 6.0 mph, 2022
Maximum Gust 25.3 mph 06:29 19.0 mph 32.0 mph, 2011 9.1 mph, 2022
Mean Wind Direction N
Rainfall 9.0 mm 9.0 mm (303%) 22.4 mm, 2010
Maximum Hourly Rain 6.1 mm 04:29 6.1 mm, 2024
Maximum 10-min Rain 5.1 mm 04:14 5.1 mm, 2024
Maximum Rain Rate 100 mm/h 04:14 100 mm/h, 2024
Minimum Dew Point 9.6 °C 03:07 9.9 °C 9.6 °C, 2024 -5.4 °C, 2013
Maximum Dew Point 12.8 °C 15:55 13.7 °C 14.5 °C, 2025 0.8 °C, 2013
Mean Dew Point 11.0 °C 11.7 °C 11.8 °C, 2025 -2.6 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.7 °C 06:32 10.9 °C 15.1 °C, 2025 2.7 °C, 2021
Day Maximum (09-21) 15.6 °C 16:41 17.7 °C 24.1 °C, 2025 8.2 °C, 2010
Max 10m Temp Rise 0.4 °C 11:58 0.6 °C 1.0 °C, 2013 0.2 °C, 2010
Max 1hr Temp Rise 1.2 °C 12:13 2.1 °C 3.5 °C, 2009 0.7 °C, 2010
Max 1hr Hum Rise 4% 20:50 6% 18%, 2021 4%, 2010
Max 10m Temp Fall 0.4 °C 01:14 0.5 °C 2.4 °C, 2018 0.3 °C, 2010
Max 1hr Temp Fall 1.8 °C 01:54 2.1 °C 3.4 °C, 2020 0.9 °C, 2010
Max 1hr Hum Fall 5% 12:57 8% 19%, 2018 5%, 2024
Max 10m Wind Speed 13.1 mph 06:35 9.9 mph 14.3 mph, 2016 4.4 mph, 2022
Minimum Feels-like 11.9 °C 06:13 12.2 °C 14.4 °C, 2025 1.3 °C, 2021
Maximum Feels-like 18.2 °C 16:39 20.6 °C 27.4 °C, 2025 8.6 °C, 2010
Mean Feels-like 14.5 °C 16.1 °C 21.2 °C, 2025 6.8 °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 4.9 °C (-4.1) 6.8 °C (-2.2) 12.8 °C (+3.8), 2013 4.4 °C (-4.6), 2010
Humidity Range 13% 20% 53%, 2009 13%, 2024
Pressure Range 7 hPa 7 hPa 15 hPa, 2014 2 hPa, 2022
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]1 hrs (9%) [3.7%] 13.4 [99%], 2013 0 [0%], 2010
Wet Hours 3
[Mean rain rate: 3.0 mm/h]		3 hrs (116%) [6.3%] 11, 2010 0, 2009
Cloud Cover Overcast
Events Moderate Thunderstorm
Comments t-storms early
Extra Comments
Issues rain gauge busted; data from islington
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 12.2 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 2nd May 2024.
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

day graph

Webcam Summary of Cloud Conditions

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose