Daily Report for 8th January 2024

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 1.0 °C (-2.1) 17:44 5.0 °C (+1.9) 9.9 °C (+6.8), 2020 -3.3 °C (-6.4), 2010
Maximum Temperature 2.8 °C (-5.0) 12:19 7.9 °C (+0.1) 12.3 °C (+4.5), 2020 0.2 °C (-7.6), 2010
Mean Temperature 2.1 °C (-3.6) 6.4 °C (+1.0) 11.4 °C, 2020 -1.9 °C, 2010
Minimum Humidity 71% 07:42 80% 90%, 2021 62%, 2012
Maximum Humidity 84% 17:41 93% 97%, 2010 83%, 2019
Mean Humidity 77% 86% 93%, 2010 70%, 2012
Minimum Pressure 1032 hPa 17:31 1001 hPa 1032 hPa, 2024 988 hPa, 2011
Maximum Pressure 1034 hPa 11:03 1013 hPa 1034 hPa, 2017 998 hPa, 2023
Mean Pressure 1033 hPa 1007 hPa 1033 hPa, 2024 993 hPa, 2023
Mean Wind Speed 7.6 mph (+2.4) 6.6 mph (+1.4) 7.8 mph, 2023 0.9 mph, 2017
Maximum Wind Speed 17.5 mph 14:08 17.0 mph 19.9 mph, 2011 4.9 mph, 2017
Maximum Gust 26.5 mph 14:20 26.8 mph 33.1 mph, 2011 8.4 mph, 2017
Mean Wind Direction E
Rainfall / Snow-melt approx. trace 35.8 mm (235%) 15.8, 2015
Maximum Hourly Rain n/a 4.8, 2015
Maximum 10-min Rain n/a 2, 2015
Maximum Rain Rate n/a 24, 2015
Minimum Dew Point -2.3 °C 18:48 2.9 °C 8.1 °C, 2020 -4.1 °C, 2010
Maximum Dew Point -0.5 °C 13:45 6.0 °C 11.2 °C, 2020 -0.9 °C, 2010
Mean Dew Point -1.6 °C 4.3 °C 9.2 °C, 2020 -2.8 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 1.9 °C * 02:30 5.3 °C 11.1 °C, 2020 -3.3 °C, 2010
Day Maximum (09-21) 2.8 °C 11:25 7.7 °C 11.9 °C, 2020 0.2 °C, 2010
Max 10m Temp Rise 0.2 °C 02:17 0.3 °C 0.5 °C, 2023 0.1 °C, 2012
Max 1hr Temp Rise 0.7 °C 03:53 0.9 °C 1.7 °C, 2023 0.4 °C, 2012
Max 1hr Hum Rise 8% 13:24 5% 8%, 2024 1%, 2017
Max 10m Temp Fall 0.3 °C 12:59 0.3 °C 0.7 °C, 2023 0.2 °C, 2010
Max 1hr Temp Fall 0.7 °C 13:51 1.0 °C 1.9 °C, 2023 0.3 °C, 2018
Max 1hr Hum Fall 9% 14:58 6% 9%, 2011 1%, 2017
Max 10m Wind Speed 12.8 mph 14:27 12.9 mph 13.3 mph, 2011 4.3 mph, 2017
Minimum Feels-like -5.3 °C 18:58 0.6 °C 7.7 °C, 2017 -8.9 °C, 2010
Maximum Feels-like 0.6 °C 00:22 7.8 °C 14.2 °C, 2020 0.2 °C, 2010
Mean Feels-like -2.4 °C 4.2 °C 12.2 °C, 2020 -5.4 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 22 hrs, 2010 0 hrs, 2011
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 1.8 °C (-2.9) 2.8 °C (-1.8) 8.6 °C (+3.9), 2022 1.5 °C (-3.2), 2012
Humidity Range 13% 13% 28%, 2011 2%, 2017
Pressure Range 2 hPa 12 hPa 22 hPa, 2022 2 hPa, 2024
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.1 [1%]9.6 hrs (57%) [17%] 6 [83%], 2019 0 [0%], 2018
Wet Hours 0.530 hrs (171%) [15%] 7, 2015 , 2009
Cloud Cover unknown
Events Snowfall: ~0 cm
Lying Snow (at 09z): trace amount
Comments some pm sn shs with slight settling
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 6.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 8th January 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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Webcam Summary of Cloud Conditions

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