Daily Report for 25th December 2025


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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.4 °C (-1.0) 08:46 6.1 °C (+2.5) 10.2 °C (+6.8), 2023 -2.8 °C (-6.2), 2010
Maximum Temperature 5.3 °C (-2.5) 13:19 10.8 °C (+2.6) 14.5 °C (+6.8), 2015 -0.2 °C (-8.0), 2010
Mean Temperature 3.6 °C (-1.7) 8.7 °C (+2.5) 12.1 °C, 2023 -1.5 °C, 2010
Minimum Humidity 54% 13:13 79% 93%, 2009 54%, 2025
Maximum Humidity 80% 03:03 92% 98%, 2009 80%, 2025
Mean Humidity 71% 86% 97%, 2009 71%, 2025
Minimum Pressure 1027 hPa 19:11 1007 hPa 1033 hPa, 2018 980 hPa, 2013
Maximum Pressure 1032 hPa 00:22 1016 hPa 1036 hPa, 2018 988 hPa, 2013
Mean Pressure 1029 hPa 1012 hPa 1035 hPa, 2018 984 hPa, 2013
Mean Wind Speed 10.0 mph (+4.9) 6.3 mph (+1.2) 10.9 mph, 2017 0.6 mph, 2018
Maximum Wind Speed 21.4 mph 05:23 16.1 mph 25.2 mph, 2017 5.4 mph, 2018
Maximum Gust 33.4 mph 05:08 24.9 mph 43.8 mph, 2017 8.1 mph, 2018
Mean Wind Direction E
Rainfall 0.0 mm 60.6 mm (132%) 12.6 mm, 2012
Maximum Hourly Rain n/a 4, 2017
Maximum 10-min Rain n/a 1.7, 2012
Maximum Rain Rate n/a 26, 2017
Minimum Dew Point -3.3 °C 13:13 4.1 °C 8.5 °C, 2023 -4.8 °C, 2010
Maximum Dew Point 0.5 °C 21:46 8.5 °C 12.4 °C, 2015 -1.7 °C, 2010
Mean Dew Point -1.2 °C 6.5 °C 10.7 °C, 2023 -2.9 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 2.4 °C 08:29 6.8 °C 11.8 °C, 2023 -2.4 °C, 2010
Day Maximum (09-21) 5.3 °C 13:16 10.7 °C 14.3 °C, 2015 -0.7 °C, 2010
Max 10m Temp Rise 0.3 °C 10:36 0.3 °C 0.8 °C, 2013 0.1 °C, 2011
Max 1hr Temp Rise 1.0 °C 11:24 1.1 °C 1.8 °C, 2013 0.1 °C, 2021
Max 1hr Hum Rise 12% 15:54 4% 12%, 2025 1%, 2021
Max 10m Temp Fall 0.2 °C 08:04 0.4 °C 0.9 °C, 2017 0.2 °C, 2009
Max 1hr Temp Fall 0.7 °C 15:40 1.0 °C 3.4 °C, 2017 0.4 °C, 2015
Max 1hr Hum Fall 7% 11:45 6% 10%, 2014 1%, 2024
Max 10m Wind Speed 16.9 mph 14:28 12.1 mph 19.3 mph, 2017 3.6 mph, 2018
Minimum Feels-like -4.4 °C 05:08 3.7 °C 10.8 °C, 2023 -6.6 °C, 2010
Maximum Feels-like 2.0 °C 16:20 11.2 °C 17.0 °C, 2015 -0.4 °C, 2010
Mean Feels-like -1.3 °C 7.7 °C 13.7 °C, 2023 -3.3 °C, 2010
Air-frost Hrs 0 hrs 0.1 hrs 24 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 2.9 °C (-1.5) 4.7 °C (+0.1) 8.6 °C (+4.2), 2015 1.7 °C (-2.7), 2024
Humidity Range 26% 13% 26%, 2025 3%, 2024
Pressure Range 4 hPa 9 hPa 24 hPa, 2017 3 hPa, 2016
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 6.9 [99%]55 hrs (104%) [31%] 7 [100%], 2019 0 [0%], 2010
Wet Hours 062 hrs (124%) [10%] 6, 2012 0, 2010
Cloud Cover unknown
Events Maximum possible sunshine
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 5.5 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 25th December 2025.
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