Daily Report for 28th May 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 10.5 °C (-0.2) 06:19 9.8 °C (+0.7) 14.8 °C (+4.2), 2018 7.2 °C (-3.5), 2023
Maximum Temperature 19.9 °C (+0.7) 16:28 18.5 °C (+0.7) 26.9 °C (+7.7), 2012 13.1 °C (-6.1), 2013
Mean Temperature 14.6 °C (+0.3) 14.3 °C (+0.7) 20.8 °C, 2012 11.4 °C, 2013
Minimum Humidity 51% 18:16 46% 91%, 2014 33%, 2020
Maximum Humidity 86% 09:09 83% 98%, 2014 75%, 2015
Mean Humidity 73% 65% 96%, 2014 49%, 2015
Minimum Pressure 1012 hPa 19:11 1011 hPa 1032 hPa, 2020 998 hPa, 2013
Maximum Pressure 1016 hPa 01:45 1017 hPa 1037 hPa, 2020 1004 hPa, 2013
Mean Pressure 1014 hPa 1013 hPa 1035 hPa, 2020 1000 hPa, 2013
Mean Wind Speed 3.0 mph (-1.7) 3.6 mph (-1.1) 7.2 mph, 2011 0.8 mph, 2021
Maximum Wind Speed 9.4 mph 17:48 11.1 mph 17.3 mph, 2025 5.7 mph, 2021
Maximum Gust 17.7 mph 17:31 18.0 mph 27.6 mph, 2024 9.1 mph, 2021
Mean Wind Direction NE
Rainfall 0.0 mm 31.0 mm (75%) 14.7 mm, 2013
Maximum Hourly Rain n/a 4.9, 2013
Maximum 10-min Rain n/a 2.5, 2017
Maximum Rain Rate n/a 30, 2017
Minimum Dew Point 7.9 °C 23:59 4.2 °C 13.4 °C, 2018 0.2 °C, 2010
Maximum Dew Point 12.3 °C 14:14 10.0 °C 19.8 °C, 2018 7.3 °C, 2010
Mean Dew Point 9.7 °C 7.2 °C 16.0 °C, 2018 3.4 °C, 2015
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 10.5 °C 06:19 9.9 °C 14.8 °C, 2018 7.2 °C, 2023
Day Maximum (09-21) 19.9 °C 16:28 18.9 °C 26.9 °C, 2012 12.2 °C, 2013
Max 10m Temp Rise 0.7 °C 14:00 0.6 °C 0.8 °C, 2009 0.3 °C, 2014
Max 1hr Temp Rise 2.3 °C 14:14 2.3 °C 3.2 °C, 2012 0.9 °C, 2014
Max 1hr Hum Rise 12% 21:00 9% 22%, 2021 2%, 2014
Max 10m Temp Fall 0.6 °C 21:31 0.5 °C 1.3 °C, 2025 0.2 °C, 2013
Max 1hr Temp Fall 1.7 °C 22:01 1.8 °C 3.3 °C, 2018 0.4 °C, 2014
Max 1hr Hum Fall 8% 14:48 11% 21%, 2021 3%, 2014
Max 10m Wind Speed 6.9 mph 17:37 8.0 mph 12.7 mph, 2024 4.2 mph, 2021
Minimum Feels-like 10.9 °C 04:35 9.4 °C 17.9 °C, 2018 5.2 °C, 2023
Maximum Feels-like 20.2 °C 16:29 19.7 °C 31.9 °C, 2018 13.7 °C, 2013
Mean Feels-like 16.0 °C 15.0 °C 23.9 °C, 2018 12.1 °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 9.4 °C (+0.9) 8.8 °C (+0.0) 14.7 °C (+6.2), 2023 3.0 °C (-5.5), 2013
Humidity Range 35% 37% 56%, 2023 7%, 2014
Pressure Range 4 hPa 6 hPa 10 hPa, 2025 2 hPa, 2021
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 5 [34%]181 hrs (106%) [46%] 14 [95%], 2012 0 [0%], 2013
Wet Hours 0.229 hrs (80%) [4.3%] 12, 2013 0, 2009
Cloud Cover am: Overcast or Hazy
pm: Hazy or Partly Cloudy
Events None
Comments 07 Shower
Extra Comments
Issues -08 lossy data. Corrections made to avgs and times
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 0.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 28th May 2016.
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