Daily Report for 2nd August 2019

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 14.8 °C (+0.2) 05:32 15.6 °C (+1.0) 18.8 °C (+4.2), 2022 11.4 °C (-3.2), 2009
Maximum Temperature 25.4 °C (+2.1) 16:41 25.4 °C (+2.1) 30.1 °C (+6.8), 2018 18.7 °C (-4.6), 2017
Mean Temperature 20.0 °C (+1.2) 20.1 °C (+1.6) 22.6 °C, 2011 16.2 °C, 2009
Minimum Humidity 52% 16:36 52% 88%, 2016 31%, 2015
Maximum Humidity 92% 06:09 87% 97%, 2023 74%, 2010
Mean Humidity 73% 72% 90%, 2023 55%, 2011
Minimum Pressure 1019 hPa 00:00 1018 hPa 1022 hPa, 2018 986 hPa, 2023
Maximum Pressure 1021 hPa 23:59 1020 hPa 1025 hPa, 2018 999 hPa, 2023
Mean Pressure 1020 hPa 1019 hPa 1024 hPa, 2018 990 hPa, 2023
Mean Wind Speed 2.6 mph (-1.4) 2.8 mph (-1.2) 7.4 mph, 2022 1.5 mph, 2021
Maximum Wind Speed 8.1 mph 17:53 8.6 mph 17.8 mph, 2012 8.1 mph, 2010
Maximum Gust 13.8 mph 13:27 13.3 mph 26.5 mph, 2023 11.5 mph, 2010
Mean Wind Direction NNE
Rainfall 0.0 mm 0.0 mm (0%) 13.2 mm, 2023
Maximum Hourly Rain n/a 3.8, 2017
Maximum 10-min Rain n/a 2.8, 2013
Maximum Rain Rate n/a 72, 2013
Minimum Dew Point 13.1 °C 05:20 13.0 °C 15.0 °C, 2022 5.2 °C, 2015
Maximum Dew Point 16.2 °C 11:35 16.2 °C 20.1 °C, 2024 13.0 °C, 2010
Mean Dew Point 14.8 °C 14.7 °C 17.7 °C, 2022 9.3 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 14.8 °C 05:32 15.6 °C 18.8 °C, 2022 11.4 °C, 2009
Day Maximum (09-21) 25.4 °C 16:41 25.4 °C 30.1 °C, 2018 18.7 °C, 2017
Max 10m Temp Rise 0.7 °C 11:39 0.7 °C 1.2 °C, 2010 0.2 °C, 2016
Max 1hr Temp Rise 2.2 °C 12:16 2.2 °C 3.0 °C, 2011 0.7 °C, 2016
Max 1hr Hum Rise 14% 22:29 12% 14%, 2019 4%, 2016
Max 10m Temp Fall 0.5 °C 17:01 0.5 °C 1.1 °C, 2010 0.2 °C, 2016
Max 1hr Temp Fall 1.7 °C 22:45 1.6 °C 3.3 °C, 2018 1.1 °C, 2021
Max 1hr Hum Fall 11% 12:18 10% 15%, 2021 1%, 2016
Max 10m Wind Speed 5.5 mph 21:53 5.9 mph 13.6 mph, 2023 5.5 mph, 2019
Minimum Feels-like 17.7 °C 05:26 18.4 °C 23.7 °C, 2024 12.8 °C, 2009
Maximum Feels-like 29.6 °C 16:39 29.7 °C 35.7 °C, 2018 22.1 °C, 2009
Mean Feels-like 23.8 °C 23.9 °C 27.9 °C, 2022 17.6 °C, 2009
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 10.6 °C (+1.9) 9.8 °C (+1.1) 15.2 °C (+6.5), 2018 3.3 °C (-5.4), 2017
Humidity Range 40% 35% 55%, 2015 5%, 2016
Pressure Range 2 hPa 2 hPa 13 hPa, 2023 2 hPa, 2021
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [50%]13 hrs (103%) [46%] 14 [100%], 2018 0 [0%], 2016
Wet Hours 00 hrs (0%) [0%] 12, 2023 0, 2009
Cloud Cover Partly Cloudy
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 21.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 2nd August 2019.
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

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