Daily Report for 25th April 2026


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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.8 °C (-3.7) 04:19 6.3 °C (+0.4) 11.3 °C (+4.8), 2015 1.4 °C (-5.1), 2017
Maximum Temperature 21.9 °C (+6.6) 17:13 16.7 °C (+2.6) 22.4 °C (+7.1), 2013 10.7 °C (-4.6), 2023
Mean Temperature 12.1 °C (+1.4) 11.6 °C (+1.5) 16.4 °C, 2013 6.0 °C, 2017
Minimum Humidity 17% 16:19 43% 82%, 2014 17%, 2026
Maximum Humidity 93% 07:14 86% 97%, 2014 67%, 2017
Mean Humidity 56% 66% 93%, 2014 48%, 2017
Minimum Pressure 1022 hPa 16:26 1018 hPa 1027 hPa, 2021 982 hPa, 2012
Maximum Pressure 1024 hPa 00:01 1024 hPa 1031 hPa, 2021 998 hPa, 2012
Mean Pressure 1023 hPa 1021 hPa 1029 hPa, 2021 990 hPa, 2012
Mean Wind Speed 1.3 mph (-3.6) 5.6 mph (+0.7) 8.4 mph, 2018 1.3 mph, 2026
Maximum Wind Speed 6.1 mph 18:48 15.1 mph 25.6 mph, 2012 6.1 mph, 2026
Maximum Gust 9.2 mph 12:39 23.5 mph 45.3 mph, 2012 9.2 mph, 2026
Mean Wind Direction E
Rainfall 0.0 mm 2.3 mm (7%) 14.2 mm, 2012
Maximum Hourly Rain n/a 4.3, 2012
Maximum 10-min Rain n/a 2.2, 2022
Maximum Rain Rate n/a 40, 2012
Minimum Dew Point -4.9 °C 16:19 1.5 °C 6.9 °C, 2014 -6.7 °C, 2017
Maximum Dew Point 5.5 °C 08:51 7.9 °C 12.5 °C, 2014 -1.2 °C, 2017
Mean Dew Point 1.1 °C 4.9 °C 9.5 °C, 2013 -4.4 °C, 2017
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 2.8 °C 04:19 6.7 °C 11.3 °C, 2015 1.4 °C, 2017
Day Maximum (09-21) 21.9 °C 17:13 16.7 °C 22.4 °C, 2013 10.7 °C, 2023
Max 10m Temp Rise 1.1 °C 11:00 0.8 °C 1.1 °C, 2026 0.2 °C, 2014
Max 1hr Temp Rise 4.0 °C 11:10 2.7 °C 4.0 °C, 2026 0.8 °C, 2014
Max 1hr Hum Rise 15% 21:08 12% 19%, 2022 4%, 2014
Max 10m Temp Fall 0.9 °C 21:43 0.7 °C 1.6 °C, 2022 0.4 °C, 2015
Max 1hr Temp Fall 4.1 °C 21:49 2.2 °C 4.1 °C, 2026 1.5 °C, 2009
Max 1hr Hum Fall 26% 11:26 14% 26%, 2026 2%, 2014
Max 10m Wind Speed 3.8 mph 16:22 11.2 mph 13.9 mph, 2018 3.8 mph, 2026
Minimum Feels-like 1.7 °C 05:40 4.1 °C 12.5 °C, 2015 -2.9 °C, 2017
Maximum Feels-like 21.9 °C 17:10 17.2 °C 23.5 °C, 2013 10.7 °C, 2023
Mean Feels-like 12.0 °C 11.2 °C 17.5 °C, 2013 3.6 °C, 2017
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 19.1 °C (+10.3) 10.4 °C (+2.2) 19.1 °C (+10.3), 2026 4.5 °C (-4.3), 2014
Humidity Range 76% 43% 76%, 2026 15%, 2014
Pressure Range 3 hPa 6 hPa 16 hPa, 2012 2 hPa, 2025
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 12.8 [98%]180 hrs (136%) [58%] 13 [100%], 2011 0 [0%], 2014
Wet Hours 04 hrs (10%) [0.7%] 9, 2012 0, 2011
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 14.2 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 25th April 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