Daily Report for 7th April 2025

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 3.0 °C (-2.6) 06:25 6.0 °C (+0.5) 11.3 °C (+5.7), 2024 -1.7 °C (-7.3), 2013
Maximum Temperature 15.1 °C (+1.5) 15:49 16.8 °C (+3.4) 20.9 °C (+7.3), 2011 6.5 °C (-7.1), 2021
Mean Temperature 9.0 °C (-0.6) 11.1 °C (+2.0) 15.2 °C, 2011 3.2 °C, 2021
Minimum Humidity 37% 15:49 40% 84%, 2014 31%, 2013
Maximum Humidity 90% 06:43 84% 94%, 2014 76%, 2011
Mean Humidity 61% 63% 90%, 2019 55%, 2013
Minimum Pressure 1026 hPa 03:23 1022 hPa 1033 hPa, 2015 985 hPa, 2022
Maximum Pressure 1029 hPa 23:37 1025 hPa 1038 hPa, 2015 1002 hPa, 2022
Mean Pressure 1027 hPa 1023 hPa 1035 hPa, 2015 991 hPa, 2022
Mean Wind Speed 4.7 mph (-0.2) 7.0 mph (+2.1) 12.4 mph, 2022 2.0 mph, 2015
Maximum Wind Speed 11.9 mph 15:41 16.6 mph 29.0 mph, 2022 6.9 mph, 2015
Maximum Gust 18.4 mph 11:01 24.5 mph 49.0 mph, 2022 8.1 mph, 2015
Mean Wind Direction ESE
Rainfall 0.0 mm 0.0 mm (0%) 3.9 mm, 2014
Maximum Hourly Rain n/a 2.4, 2022
Maximum 10-min Rain n/a 1.4, 2022
Maximum Rain Rate n/a 30, 2022
Minimum Dew Point -1.0 °C 20:00 1.1 °C 7.9 °C, 2024 -6.9 °C, 2013
Maximum Dew Point 5.3 °C 15:53 6.3 °C 12.6 °C, 2014 -1.3 °C, 2021
Mean Dew Point 1.3 °C 3.6 °C 11.3 °C, 2014 -3.9 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 3.0 °C 06:26 6.0 °C 12.6 °C, 2014 -1.7 °C, 2013
Day Maximum (09-21) * 16.7 °C * 15:49 17.0 °C 20.9 °C, 2011 6.5 °C, 2021
Max 10m Temp Rise 1.9 °C 15:51 0.8 °C 1.9 °C, 2025 0.2 °C, 2014
Max 1hr Temp Rise 2.9 °C 10:10 2.5 °C 4.8 °C, 2013 0.8 °C, 2014
Max 1hr Hum Rise 13% 22:16 9% 16%, 2020 3%, 2019
Max 10m Temp Fall 2.0 °C 16:00 0.7 °C 2.0 °C, 2025 0.3 °C, 2010
Max 1hr Temp Fall 2.8 °C 16:49 1.8 °C 3.1 °C, 2015 0.4 °C, 2021
Max 1hr Hum Fall 24% 10:34 14% 24%, 2025 4%, 2019
Max 10m Wind Speed 9.8 mph 11:09 12.7 mph 23.8 mph, 2022 4.4 mph, 2015
Minimum Feels-like 0.4 °C 06:44 2.6 °C 11.8 °C, 2024 -6.1 °C, 2021
Maximum Feels-like 16.7 °C 15:49 17.1 °C 22.4 °C, 2011 5.4 °C, 2021
Mean Feels-like 8.2 °C 9.6 °C 15.6 °C, 2011 0.3 °C, 2021
Air-frost Hrs 0 hrs 0 hrs 8 hrs, 2021 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 12.1 °C (+4.1) 10.8 °C (+2.9) 15.3 °C (+7.3), 2015 2.9 °C (-5.1), 2010
Humidity Range 53% 45% 53%, 2025 10%, 2014
Pressure Range 3 hPa 4 hPa 17 hPa, 2022 3 hPa, 2021
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 12 [100%]79 hrs (222%) [95%] 12 [100%], 2025 0 [0%], 2014
Wet Hours 00 hrs (0%) [0%] 5, 2014 0, 2009
Cloud Cover Sunny
Events Maximum possible sunshine
Comments -
Extra Comments
Issues t/h spikes due to squirrel hole
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 11.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 7th April 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

day graph

Webcam Summary of Cloud Conditions

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose