Daily Report for 12th October 2023

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 12.4 °C (+3.3) 06:51 13.8 °C (+4.3) 14.7 °C (+5.6), 2011 4.4 °C (-4.7), 2022
Maximum Temperature 16.0 °C (+0.6) 23:16 20.5 °C (+4.6) 20.9 °C (+5.5), 2018 12.6 °C (-2.8), 2019
Mean Temperature 14.4 °C (+2.0) 16.7 °C (+4.4) 18.1 °C, 2018 9.4 °C, 2020
Minimum Humidity 93% 03:38 71% 93%, 2023 48%, 2012
Maximum Humidity 97% 09:28 93% 98%, 2013 83%, 2016
Mean Humidity 95% 84% 95%, 2023 72%, 2018
Minimum Pressure 1010 hPa 23:52 1018 hPa 1025 hPa, 2021 998 hPa, 2012
Maximum Pressure 1014 hPa 13:07 1023 hPa 1031 hPa, 2009 1009 hPa, 2012
Mean Pressure 1013 hPa 1021 hPa 1027 hPa, 2021 1005 hPa, 2012
Mean Wind Speed 2.2 mph (-1.9) 5.1 mph (+1.0) 10.5 mph, 2018 1.8 mph, 2020
Maximum Wind Speed 10.3 mph 21:53 13.4 mph 23.8 mph, 2018 7.6 mph, 2019
Maximum Gust 13.8 mph 23:38 20.0 mph 35.7 mph, 2018 12.0 mph, 2019
Mean Wind Direction NNW
Rainfall 8.4 mm 16.1 mm (64%) 9.0 mm, 2019
Maximum Hourly Rain 2.7 mm 03:29 3.0 mm, 2014
Maximum 10-min Rain 1.0 mm 02:51 1.9 mm, 2013
Maximum Rain Rate 7 mm/h 02:44 54 mm/h, 2013
Minimum Dew Point 11.6 °C 06:41 12.1 °C 11.6 °C, 2023 2.5 °C, 2012
Maximum Dew Point 15.4 °C 23:16 16.1 °C 15.4 °C, 2023 7.9 °C, 2015
Mean Dew Point 13.6 °C 13.9 °C 13.6 °C, 2023 5.6 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 12.4 °C 06:52 13.8 °C 14.7 °C, 2011 4.4 °C, 2022
Day Maximum (09-21) * 15.6 °C * 20:59 20.5 °C 20.9 °C, 2018 12.6 °C, 2019
Max 10m Temp Rise 0.2 °C 21:14 0.4 °C 0.9 °C, 2022 0.2 °C, 2019
Max 1hr Temp Rise 0.7 °C 21:21 1.6 °C 3.8 °C, 2022 0.5 °C, 2019
Max 1hr Hum Rise 2% 20:57 6% 9%, 2016 2%, 2019
Max 10m Temp Fall 0.5 °C 03:18 0.4 °C 0.5 °C, 2013 0.2 °C, 2018
Max 1hr Temp Fall 1.7 °C 04:07 1.6 °C 2.0 °C, 2013 0.4 °C, 2018
Max 1hr Hum Fall 2% 03:13 7% 18%, 2012 2%, 2019
Max 10m Wind Speed 6.3 mph 23:43 9.9 mph 17.5 mph, 2018 5.6 mph, 2015
Minimum Feels-like 14.5 °C 06:26 16.2 °C 16.7 °C, 2011 4.3 °C, 2022
Maximum Feels-like 20.2 °C 22:58 25.1 °C 24.1 °C, 2018 12.8 °C, 2015
Mean Feels-like 17.6 °C 20.1 °C 20.8 °C, 2018 9.6 °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 3.6 °C (-2.7) 6.7 °C (+0.3) 11.9 °C (+5.6), 2022 1.8 °C (-4.5), 2019
Humidity Range 4% 21% 49%, 2012 4%, 2023
Pressure Range 3 hPa 5 hPa 14 hPa, 2020 2 hPa, 2010
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]52 hrs (107%) [43%] 7 [71%], 2017 0 [0%], 2019
Wet Hours 9
[Mean rain rate: 0.9 mm/h]
17 hrs (90%) [5.9%] 16, 2019 0, 2009
Cloud Cover unknown
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 17.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 12th 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

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Wind rose