Daily Report for 29th October 2023

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 8.9 °C (+1.6) 06:19 10.4 °C (+1.8) 12.6 °C (+5.3), 2024 2.2 °C (-5.1), 2018
Maximum Temperature 11.9 °C (-1.2) 10:44 16.9 °C (+2.1) 21.3 °C (+8.2), 2022 8.5 °C (-4.6), 2018
Mean Temperature 10.4 °C (+0.2) 13.5 °C (+1.9) 16.1 °C, 2022 5.0 °C, 2018
Minimum Humidity 88% 21:25 74% 91%, 2014 52%, 2013
Maximum Humidity 95% 01:04 94% 98%, 2009 80%, 2016
Mean Humidity 92% 87% 95%, 2014 76%, 2017
Minimum Pressure 983 hPa 01:00 1005 hPa 1034 hPa, 2016 983 hPa, 2023
Maximum Pressure 995 hPa 23:47 1013 hPa 1037 hPa, 2016 995 hPa, 2023
Mean Pressure 990 hPa 1009 hPa 1036 hPa, 2016 990 hPa, 2023
Mean Wind Speed 5.3 mph (+1.2) 4.6 mph (+0.5) 7.9 mph, 2010 0.2 mph, 2016
Maximum Wind Speed 15.7 mph 01:30 12.8 mph 18.7 mph, 2021 4.4 mph, 2016
Maximum Gust 26.5 mph 01:31 20.0 mph 29.7 mph, 2021 4.8 mph, 2016
Mean Wind Direction WSW
Rainfall 7.2 mm 92.5 mm (152%) 7.2 mm, 2023
Maximum Hourly Rain 3.0 mm 01:00 3.0 mm, 2023
Maximum 10-min Rain 0.7 mm 11:14 1.4 mm, 2012
Maximum Rain Rate 4.8 mm/h 11:14 24 mm/h, 2015
Minimum Dew Point 7.8 °C 06:05 8.9 °C 11.8 °C, 2024 0.4 °C, 2018
Maximum Dew Point 10.9 °C 01:04 13.4 °C 17.0 °C, 2022 3.1 °C, 2018
Mean Dew Point 9.1 °C 11.2 °C 14.0 °C, 2022 1.7 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 8.9 °C 06:21 10.8 °C 13.0 °C, 2016 2.2 °C, 2018
Day Maximum (09-21) 11.9 °C 10:45 16.9 °C 21.3 °C, 2022 8.5 °C, 2018
Max 10m Temp Rise 0.5 °C 08:59 0.4 °C 0.7 °C, 2009 0.1 °C, 2014
Max 1hr Temp Rise 2.0 °C 09:18 1.6 °C 3.1 °C, 2022 0.3 °C, 2014
Max 1hr Hum Rise 3% 12:07 6% 8%, 2009 2%, 2014
Max 10m Temp Fall 0.4 °C 11:10 0.5 °C 0.7 °C, 2009 0.2 °C, 2020
Max 1hr Temp Fall 1.2 °C 12:00 1.6 °C 2.2 °C, 2016 0.3 °C, 2020
Max 1hr Hum Fall 5% 09:39 7% 15%, 2009 2%, 2014
Max 10m Wind Speed 10.2 mph 01:33 9.5 mph 14.3 mph, 2021 1.9 mph, 2016
Minimum Feels-like 5.9 °C 05:45 10.7 °C 14.9 °C, 2024 -2.9 °C, 2018
Maximum Feels-like 13.4 °C 10:57 20.0 °C 26.5 °C, 2022 8.1 °C, 2018
Mean Feels-like 10.6 °C 15.4 °C 19.5 °C, 2022 1.9 °C, 2018
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.0 °C (-2.7) 6.5 °C (+0.4) 10.0 °C (+4.3), 2022 2.6 °C (-3.1), 2010
Humidity Range 7% 20% 39%, 2013 5%, 2014
Pressure Range 12 hPa 8 hPa 18 hPa, 2018 2 hPa, 2019
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 2 [23%]109 hrs (98%) [39%] 7.7 [87%], 2018 0 [0%], 2014
Wet Hours 6
[Mean rain rate: 1.2 mm/h]		75 hrs (164%) [11%] 7, 2014 0, 2011
Cloud Cover unknown
Events None
Comments rn
Extra Comments
Issues corrected rn due to DST glitch - see WU data
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 14.5 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 29th October 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

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose