Daily Report for 16th June 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 13.8 °C (+1.7) 23:37 12.5 °C (+0.9) 14.4 °C (+2.3), 2018 8.1 °C (-4.0), 2015
Maximum Temperature 19.3 °C (-1.8) 16:52 19.9 °C (-0.5) 29.1 °C (+8.0), 2022 17.3 °C (-3.8), 2011
Mean Temperature 15.8 °C (-0.1) 15.9 °C (+0.2) 22.1 °C, 2021 13.9 °C, 2010
Minimum Humidity 60% 17:26 61% 61%, 2019 33%, 2022
Maximum Humidity 85% 23:43 88% 92%, 2019 73%, 2018
Mean Humidity 75% 77% 78%, 2011 56%, 2023
Minimum Pressure 999 hPa 02:46 1011 hPa 1027 hPa, 2025 999 hPa, 2016
Maximum Pressure 1002 hPa 22:40 1015 hPa 1030 hPa, 2025 1002 hPa, 2016
Mean Pressure 1000 hPa 1013 hPa 1029 hPa, 2025 1000 hPa, 2016
Mean Wind Speed 1.9 mph (-2.5) 3.3 mph (-1.1) 10.3 mph, 2012 1.7 mph, 2022
Maximum Wind Speed 7.7 mph 14:15 10.2 mph 23.0 mph, 2012 7.7 mph, 2016
Maximum Gust 11.5 mph 14:12 15.7 mph 35.1 mph, 2012 11.5 mph, 2016
Mean Wind Direction SSE
Rainfall 1.1 mm 27.0 mm (108%) 14.7 mm, 2011
Maximum Hourly Rain 0.9 mm 09:08 8.5 mm, 2011
Maximum 10-min Rain 0.5 mm 08:58 1.0 mm, 2021
Maximum Rain Rate 3.6 mm/h 09:01 7 mm/h, 2021
Minimum Dew Point 9.6 °C 00:09 8.7 °C 11.5 °C, 2020 4.1 °C, 2010
Maximum Dew Point 13.0 °C 11:54 13.9 °C 19.7 °C, 2021 7.8 °C, 2010
Mean Dew Point 11.4 °C 11.4 °C 15.6 °C, 2021 6.1 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 13.9 °C * 02:04 12.6 °C 14.6 °C, 2018 8.1 °C, 2015
Day Maximum (09-21) 19.3 °C 16:52 19.9 °C 29.1 °C, 2022 17.3 °C, 2011
Max 10m Temp Rise 0.6 °C 14:02 0.5 °C 1.2 °C, 2009 0.5 °C, 2010
Max 1hr Temp Rise 2.1 °C 12:07 1.8 °C 3.9 °C, 2009 1.5 °C, 2014
Max 1hr Hum Rise 7% 19:44 8% 21%, 2021 5%, 2017
Max 10m Temp Fall 0.4 °C 19:26 0.6 °C 1.1 °C, 2020 0.4 °C, 2014
Max 1hr Temp Fall 1.3 °C 20:03 1.8 °C 3.3 °C, 2021 1.0 °C, 2014
Max 1hr Hum Fall 10% 12:09 9% 18%, 2023 8%, 2010
Max 10m Wind Speed 5.7 mph 14:21 7.6 mph 16.2 mph, 2012 5.7 mph, 2015
Minimum Feels-like 15.2 °C 00:37 13.4 °C 16.0 °C, 2020 6.9 °C, 2010
Maximum Feels-like 21.5 °C 16:50 22.6 °C 34.6 °C, 2021 18.7 °C, 2012
Mean Feels-like 17.8 °C 17.9 °C 26.5 °C, 2021 13.6 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.5 °C (-3.5) 7.4 °C (-1.4) 17.2 °C (+8.2), 2022 5.1 °C (-3.9), 2014
Humidity Range 25% 26% 58%, 2022 23%, 2018
Pressure Range 3 hPa 4 hPa 9 hPa, 2017 2 hPa, 2014
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.4 [3%]53 hrs (52%) [22%] 13.5 [89%], 2023 0 [0%], 2014
Wet Hours 1
[Mean rain rate: 1.1 mm/h]		20 hrs (101%) [5.2%] 4, 2011 0, 2010
Cloud Cover Mostly Cloudy
Events Thunder
Comments 09 Shower; 1330 nearby TS
Extra Comments
Issues None known
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 16th June 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