Daily Report for 10th April 2012

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.7 °C (-0.0) 06:41 3.6 °C (-2.0) 10.1 °C (+4.3), 2009 0.6 °C (-5.2), 2022
Maximum Temperature 14.2 °C (+0.3) 14:53 12.2 °C (-1.4) 21.8 °C (+7.9), 2020 7.9 °C (-6.0), 2021
Mean Temperature 9.6 °C (+0.1) 8.2 °C (-1.7) 14.5 °C, 2020 6.2 °C, 2021
Minimum Humidity 38% 15:19 50% 81%, 2018 32%, 2015
Maximum Humidity 95% 00:17 89% 96%, 2018 71%, 2017
Mean Humidity 66% 70% 92%, 2018 56%, 2017
Minimum Pressure 986 hPa 01:34 1004 hPa 1030 hPa, 2010 986 hPa, 2012
Maximum Pressure 993 hPa 22:49 1013 hPa 1035 hPa, 2010 993 hPa, 2012
Mean Pressure 990 hPa 1009 hPa 1032 hPa, 2010 990 hPa, 2012
Mean Wind Speed 6.6 mph (+1.7) 4.4 mph (-0.5) 8.7 mph, 2023 2.1 mph, 2009
Maximum Wind Speed 17.3 mph 12.7 mph 20.5 mph, 2023 7.8 mph, 2010
Maximum Gust 23.2 mph 02:33 17.9 mph 33.4 mph, 2023 10.9 mph, 2014
Mean Wind Direction WSW
Rainfall 0.3 mm 15.7 mm (112%) 11.3 mm, 2023
Maximum Hourly Rain n/a 21:20 2, 2023
Maximum 10-min Rain 0.3 mm 21:20 0.9 mm, 2023
Maximum Rain Rate n/a 00:00 14.4, 2023
Minimum Dew Point -0.5 °C 15:20 -0.8 °C 7.7 °C, 2009 -2.4 °C, 2016
Maximum Dew Point 9.1 °C 00:33 6.2 °C 11.3 °C, 2023 3.8 °C, 2021
Mean Dew Point 3.2 °C 2.7 °C 9.3 °C, 2009 0.8 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 5.7 °C 06:40 4.1 °C 10.9 °C, 2009 0.6 °C, 2022
Day Maximum (09-21) 14.2 °C 14:52 12.2 °C 21.8 °C, 2020 7.9 °C, 2021
Max 10m Temp Rise 0.8 °C 13:22 0.7 °C 1.1 °C, 2022 0.3 °C, 2021
Max 1hr Temp Rise 2.1 °C 08:33 2.7 °C 4.5 °C, 2022 0.7 °C, 2021
Max 1hr Hum Rise 15% 16:02 8% 16%, 2023 3%, 2017
Max 10m Temp Fall 1.7 °C 15:35 0.7 °C 1.7 °C, 2012 0.4 °C, 2010
Max 1hr Temp Fall 3.3 °C 15:43 1.9 °C 3.3 °C, 2012 1.3 °C, 2014
Max 1hr Hum Fall 11% 10:19 12% 21%, 2016 6%, 2017
Max 10m Wind Speed 11.2 mph 15:35 8.7 mph 15.4 mph, 2023 5.5 mph, 2014
Minimum Feels-like 2.2 °C 06:40 1.7 °C 6.1 °C, 2020 -1.2 °C, 2013
Maximum Feels-like 14.2 °C 14:40 12.3 °C 23.4 °C, 2020 7.0 °C, 2021
Mean Feels-like 8.6 °C 7.4 °C 14.7 °C, 2020 4.3 °C, 2021
Air-frost Hrs 0 hrs 0.5 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 8.5 °C (+0.3) 8.6 °C (+0.6) 15.2 °C (+7.0), 2015 3.8 °C (-4.4), 2009
Humidity Range 57% 39% 57%, 2012 15%, 2018
Pressure Range 7 hPa 9 hPa 11 hPa, 2015 1 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7 [57%]42 hrs (81%) [35%] 12 [98%], 2019 0 [0%], 2021
Wet Hours 0.531 hrs (199%) [13%] 11, 2023 0, 2010
Cloud Cover am: Mostly Sunny transitioned to Partly Cloudy
pm: Partly Cloudy
Events None
Comments 1530, 17, 21 Light-Moderate Showers
Extra Comments
Issues Wind Data Loss (09-12) - not reconstructed
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 0.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 10th April 2012.
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.
View monthly summary

Daily Graph of Conditions

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Webcam Summary of Cloud Conditions

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Wind rose