Daily Report for 9th January 2026

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.1 °C (-1.0) 06:37 -0.7 °C (-3.8) 8.4 °C (+5.3), 2015 -4.2 °C (-7.3), 2010
Maximum Temperature 6.3 °C (-1.5) 00:09 4.2 °C (-3.6) 14.8 °C (+7.0), 2015 0.6 °C (-7.2), 2010
Mean Temperature 3.7 °C (-1.2) 1.6 °C (-3.7) 11.9 °C, 2015 -1.9 °C, 2010
Minimum Humidity 81% 17:31 73% 88%, 2018 64%, 2014
Maximum Humidity 93% 03:20 91% 98%, 2013 83%, 2024
Mean Humidity 88% 83% 93%, 2021 78%, 2014
Minimum Pressure 977 hPa 00:35 1001 hPa 1031 hPa, 2024 977 hPa, 2026
Maximum Pressure 1006 hPa 23:54 1013 hPa 1033 hPa, 2012 997 hPa, 2016
Mean Pressure 993 hPa 1008 hPa 1032 hPa, 2024 989 hPa, 2016
Mean Wind Speed 9.2 mph (+4.0) 5.1 mph (-0.1) 11.1 mph, 2015 0.6 mph, 2009
Maximum Wind Speed 17.9 mph 06:27 14.4 mph 28.4 mph, 2015 6.8 mph, 2021
Maximum Gust 28.8 mph 07:09 21.6 mph 38.9 mph, 2016 9.0 mph, 2009
Mean Wind Direction N
Rainfall 2.4 mm 29.0 mm (169%) 6.4 mm, 2020
Maximum Hourly Rain 0.8 mm 05:34 4.4 mm, 2020
Maximum 10-min Rain 0.4 mm 21:45 1.8 mm, 2020
Maximum Rain Rate 2.1 mm/h 21:45 36 mm/h, 2017
Minimum Dew Point -0.2 °C 23:54 -3.0 °C 6.1 °C, 2012 -5.4 °C, 2010
Maximum Dew Point 5.1 °C 00:45 1.4 °C 13.2 °C, 2015 -2.3 °C, 2010
Mean Dew Point 1.8 °C -1.0 °C 8.9 °C, 2020 -4.1 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 2.1 °C 06:15 -0.6 °C 9.9 °C, 2020 -4.2 °C, 2010
Day Maximum (09-21) * 4.4 °C * 15:10 3.8 °C 14.8 °C, 2015 0.6 °C, 2010
Max 10m Temp Rise 0.2 °C 08:38 0.3 °C 0.8 °C, 2010 0.2 °C, 2012
Max 1hr Temp Rise 0.9 °C 11:03 1.3 °C 1.6 °C, 2022 0.4 °C, 2018
Max 1hr Hum Rise 5% 21:51 5% 13%, 2015 3%, 2012
Max 10m Temp Fall 0.4 °C 03:08 0.3 °C 1.2 °C, 2016 0.1 °C, 2018
Max 1hr Temp Fall 1.7 °C 03:46 1.1 °C 2.8 °C, 2016 0.2 °C, 2018
Max 1hr Hum Fall 4% 14:06 6% 15%, 2014 1%, 2018
Max 10m Wind Speed 13.9 mph 07:11 10.5 mph 20.4 mph, 2015 4.9 mph, 2021
Minimum Feels-like -4.9 °C 07:09 -6.1 °C 5.8 °C, 2012 -9.8 °C, 2010
Maximum Feels-like 5.3 °C 00:00 2.9 °C 17.4 °C, 2015 -3.3 °C, 2010
Mean Feels-like -0.9 °C -1.9 °C 12.2 °C, 2015 -6.7 °C, 2010
Air-frost Hrs 0 hrs 7 hrs 22 hrs, 2010 0 hrs, 2011
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 4.2 °C (-0.6) 4.9 °C (+0.2) 8.4 °C (+3.6), 2013 2.7 °C (-2.1), 2024
Humidity Range 12% 18% 32%, 2014 6%, 2017
Pressure Range 30 hPa 12 hPa 30 hPa, 2026 2 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]35 hrs (184%) [54%] 7.3 [101%], 2011 0 [0%], 2018
Wet Hours 5
[Mean rain rate: 0.5 mm/h]		23 hrs (118%) [11%] 8, 2017 , 2009
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 2.7 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 9th January 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

day graph

Webcam Summary of Cloud Conditions

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose