Daily Report for 9th April 2014

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.3 °C (-0.4) 06:39 8.7 °C (+3.2) 9.1 °C (+3.4), 2020 2.1 °C (-3.6), 2022
Maximum Temperature 16.9 °C (+3.1) 17:12 16.3 °C (+2.9) 25.2 °C (+11.4), 2017 8.9 °C (-4.9), 2013
Mean Temperature 11.3 °C (+1.4) 12.6 °C (+3.0) 16.1 °C, 2017 5.8 °C, 2013
Minimum Humidity 45% 16:28 57% 93%, 2018 29%, 2017
Maximum Humidity 90% 07:49 90% 96%, 2012 71%, 2011
Mean Humidity 65% 75% 95%, 2018 55%, 2011
Minimum Pressure 1024 hPa 17:17 1008 hPa 1032 hPa, 2010 987 hPa, 2012
Maximum Pressure 1027 hPa 07:52 1014 hPa 1035 hPa, 2010 1001 hPa, 2013
Mean Pressure 1026 hPa 1011 hPa 1034 hPa, 2010 997 hPa, 2013
Mean Wind Speed 4.6 mph (-0.3) 4.9 mph (+0.0) 11.0 mph, 2024 2.0 mph, 2010
Maximum Wind Speed 11.2 mph 15:32 12.7 mph 20.9 mph, 2024 7.6 mph, 2010
Maximum Gust 15.2 mph 15:32 17.9 mph 35.7 mph, 2024 10.5 mph, 2010
Mean Wind Direction W
Rainfall 0.0 mm 9.0 mm (71%) 8.0 mm, 2012
Maximum Hourly Rain n/a 1.3, 2018
Maximum 10-min Rain n/a 0.5, 2012
Maximum Rain Rate n/a 5.5, 2012
Minimum Dew Point 2.4 °C 00:00 5.4 °C 6.9 °C, 2018 -2.0 °C, 2022
Maximum Dew Point 7.6 °C 09:42 10.5 °C 11.1 °C, 2009 3.1 °C, 2022
Mean Dew Point 4.4 °C 8.0 °C 8.7 °C, 2009 0.8 °C, 2022
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 5.3 °C 06:39 9.2 °C 9.1 °C, 2020 2.1 °C, 2022
Day Maximum (09-21) 16.9 °C 17:12 16.3 °C 25.2 °C, 2017 8.9 °C, 2013
Max 10m Temp Rise 0.6 °C 07:40 0.5 °C 0.9 °C, 2017 0.2 °C, 2012
Max 1hr Temp Rise 2.5 °C 08:29 2.0 °C 4.3 °C, 2017 0.4 °C, 2018
Max 1hr Hum Rise 5% 01:01 7% 26%, 2017 1%, 2018
Max 10m Temp Fall 0.4 °C 18:54 0.4 °C 1.1 °C, 2021 0.2 °C, 2012
Max 1hr Temp Fall 1.4 °C 22:56 1.3 °C 3.2 °C, 2017 0.6 °C, 2018
Max 1hr Hum Fall 17% 11:10 11% 19%, 2016 1%, 2018
Max 10m Wind Speed 7.9 mph 15:38 9.3 mph 17.5 mph, 2024 5.4 mph, 2010
Minimum Feels-like 1.8 °C 06:26 7.7 °C 8.1 °C, 2020 -2.0 °C, 2013
Maximum Feels-like 16.9 °C 17:12 17.2 °C 25.9 °C, 2017 8.3 °C, 2013
Mean Feels-like 10.6 °C 13.2 °C 16.4 °C, 2017 3.1 °C, 2013
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 11.6 °C (+3.5) 7.6 °C (-0.3) 18.8 °C (+10.7), 2017 1.6 °C (-6.5), 2018
Humidity Range 45% 33% 52%, 2022 3%, 2018
Pressure Range 3 hPa 6 hPa 26 hPa, 2024 3 hPa, 2020
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 10 [83%]34 hrs (74%) [32%] 12.1 [100%], 2017 0 [0%], 2012
Wet Hours 011 hrs (80%) [5.1%] 18, 2012 0, 2010
Cloud Cover am: Sunny
pm: Mostly Sunny
Events None
Comments -
Extra Comments
Issues None known
Observer Absent? No
Pond Temperature (Heath) 0.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 9th April 2014.
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

daycamsumLarge resolution version

Wind rose