Daily Report for 4th January 2026

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature -3.4 °C (-6.6) 07:58 -1.5 °C (-4.6) 10.4 °C (+7.2), 2023 -4.2 °C (-7.4), 2010
Maximum Temperature 2.3 °C (-5.5) 14:21 3.4 °C (-4.4) 13.6 °C (+5.8), 2023 0.6 °C (-7.2), 2009
Mean Temperature -0.7 °C (-6.0) 0.9 °C (-4.5) 12.2 °C, 2023 -2.4 °C, 2010
Minimum Humidity 69% 12:53 69% 96%, 2015 51%, 2009
Maximum Humidity 87% 23:38 89% 98%, 2015 72%, 2009
Mean Humidity 79% 79% 97%, 2015 62%, 2009
Minimum Pressure 1012 hPa 23:57 1008 hPa 1041 hPa, 2019 982 hPa, 2016
Maximum Pressure 1016 hPa 10:34 1015 hPa 1044 hPa, 2019 984 hPa, 2016
Mean Pressure 1014 hPa 1011 hPa 1042 hPa, 2019 982 hPa, 2016
Mean Wind Speed 3.8 mph (-1.4) 5.0 mph (-0.2) 10.4 mph, 2023 1.8 mph, 2019
Maximum Wind Speed 10.0 mph 14:17 13.2 mph 28.6 mph, 2018 6.2 mph, 2010
Maximum Gust 15.0 mph 14:05 19.9 mph 42.6 mph, 2018 8.1 mph, 2010
Mean Wind Direction WNW
Rainfall 0.0 mm 1.4 mm (18%) 17.9 mm, 2024
Maximum Hourly Rain n/a 4.6, 2024
Maximum 10-min Rain n/a 1.7, 2022
Maximum Rain Rate n/a 30, 2022
Minimum Dew Point -5.7 °C 05:07 -4.0 °C 8.1 °C, 2023 -5.7 °C, 2026
Maximum Dew Point -2.0 °C 18:30 -0.2 °C 11.7 °C, 2023 -2.0 °C, 2026
Mean Dew Point -3.9 °C -2.3 °C 10.0 °C, 2023 -4.0 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) -3.4 °C 07:58 -1.1 °C 11.4 °C, 2023 -4.2 °C, 2010
Day Maximum (09-21) 2.3 °C 14:14 3.3 °C 13.6 °C, 2023 0.6 °C, 2009
Max 10m Temp Rise 0.4 °C 10:34 0.3 °C 0.7 °C, 2010 0.1 °C, 2013
Max 1hr Temp Rise 1.8 °C 11:33 1.4 °C 2.2 °C, 2010 0.4 °C, 2013
Max 1hr Hum Rise 3% 02:52 6% 7%, 2012 1%, 2015
Max 10m Temp Fall 0.2 °C 00:40 0.3 °C 1.6 °C, 2022 0.1 °C, 2020
Max 1hr Temp Fall 0.8 °C 19:36 1.0 °C 3.9 °C, 2022 0.3 °C, 2020
Max 1hr Hum Fall 7% 12:34 7% 14%, 2018 1%, 2015
Max 10m Wind Speed 6.8 mph 14:19 9.1 mph 20.9 mph, 2018 4.3 mph, 2010
Minimum Feels-like -9.0 °C 07:57 -6.9 °C 10.9 °C, 2023 -9.0 °C, 2026
Maximum Feels-like 2.1 °C 15:10 2.4 °C 15.1 °C, 2023 1.3 °C, 2010
Mean Feels-like -4.2 °C -2.8 °C 13.5 °C, 2023 -4.2 °C, 2026
Air-frost Hrs 14 hrs 8 hrs 20 hrs, 2010 0 hrs, 2011
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.7 °C (+1.0) 4.8 °C (+0.2) 7.0 °C (+2.3), 2022 2.4 °C (-2.3), 2011
Humidity Range 18% 20% 29%, 2018 2%, 2015
Pressure Range 4 hPa 7 hPa 22 hPa, 2025 2 hPa, 2013
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7.2 [101%]23 hrs (268%) [79%] 7.2 [101%], 2026 0 [0%], 2014
Wet Hours 03 hrs (35%) [3.1%] 8, 2014 , 2009
Cloud Cover unknown
Events Air Frost
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 0.9 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 4th 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

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Webcam Summary of Cloud Conditions

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose