Daily Report for 30th August 2026

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 16.2 °C (+3.1) 06:48 15.4 °C (+1.4) 16.2 °C (+3.1), 2026 9.3 °C (-3.8), 2010
Maximum Temperature 22.8 °C (+1.3) 13:14 26.8 °C (+4.3) 25.8 °C (+4.3), 2016 16.1 °C (-5.4), 2020
Mean Temperature 19.2 °C (+2.2) 21.1 °C (+2.8) 19.7 °C, 2013 13.2 °C, 2017
Minimum Humidity 57% 13:29 40% 76%, 2021 34%, 2016
Maximum Humidity 87% 00:14 80% 92%, 2012 76%, 2011
Mean Humidity 74% 61% 84%, 2015 60%, 2016
Minimum Pressure 1006 hPa 00:06 1014 hPa 1026 hPa, 2021 1002 hPa, 2025
Maximum Pressure 1012 hPa 09:42 1019 hPa 1029 hPa, 2021 1006 hPa, 2025
Mean Pressure 1009 hPa 1017 hPa 1027 hPa, 2021 1004 hPa, 2025
Mean Wind Speed 7.0 mph (+3.0) 4.2 mph (+0.2) 7.0 mph, 2026 1.3 mph, 2024
Maximum Wind Speed 15.6 mph 16:29 12.8 mph 17.7 mph, 2025 7.0 mph, 2018
Maximum Gust 26.5 mph 22:15 19.9 mph 26.5 mph, 2025 10.4 mph, 2018
Mean Wind Direction WSW
Rainfall 1.0 mm 11.2 mm (21%) 9.1 mm, 2017
Maximum Hourly Rain 1.0 mm 14:49 3.8 mm, 2017
Maximum 10-min Rain 1.0 mm 14:49 1.3 mm, 2017
Maximum Rain Rate 14 mm/h 14:43 24 mm/h, 2014
Minimum Dew Point 13.0 °C 23:01 9.9 °C 13.5 °C, 2015 3.1 °C, 2012
Maximum Dew Point 16.4 °C 14:45 14.9 °C 16.7 °C, 2025 9.8 °C, 2011
Mean Dew Point 14.2 °C 12.5 °C 14.4 °C, 2015 7.1 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 16.2 °C 06:48 15.4 °C 16.2 °C, 2026 9.3 °C, 2010
Day Maximum (09-21) 22.8 °C 13:50 26.8 °C 25.8 °C, 2016 13.7 °C, 2017
Max 10m Temp Rise 0.6 °C 09:47 0.8 °C 0.8 °C, 2013 0.2 °C, 2017
Max 1hr Temp Rise 2.0 °C 10:27 2.9 °C 3.3 °C, 2022 0.5 °C, 2017
Max 1hr Hum Rise 14% 15:00 12% 14%, 2026 4%, 2015
Max 10m Temp Fall 1.1 °C 14:51 0.8 °C 1.1 °C, 2026 0.3 °C, 2009
Max 1hr Temp Fall 1.7 °C 14:59 2.3 °C 2.3 °C, 2013 0.8 °C, 2021
Max 1hr Hum Fall 12% 10:44 12% 18%, 2012 3%, 2021
Max 10m Wind Speed 11.8 mph 16:32 9.4 mph 13.2 mph, 2025 4.4 mph, 2018
Minimum Feels-like 19.5 °C 06:29 17.3 °C 19.5 °C, 2026 6.7 °C, 2010
Maximum Feels-like 27.0 °C 14:45 29.6 °C 27.3 °C, 2019 16.8 °C, 2011
Mean Feels-like 22.7 °C 23.7 °C 22.7 °C, 2013 14.3 °C, 2017
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Minimum PM2.5 1 01:35 3 1, 2026 0, 2021
Maximum PM2.5 9 13:00 14 9, 2026 9, 2026
Mean PM2.5 3 6 3, 2026 3, 2026
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.6 °C (-1.8) 11.4 °C (+3.0) 14.0 °C (+5.6), 2016 3.0 °C (-5.4), 2021
Humidity Range 30% 40% 53%, 2016 13%, 2017
Pressure Range 6 hPa 5 hPa 15 hPa, 2012 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]261 hrs (146%) [66%] 12.2 [98%], 2016 0 [0%], 2011
Wet Hours 1
[Mean rain rate: 1.0 mm/h]		18 hrs (49%) [2.5%] 7, 2017 0, 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 19.5 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 30th August 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