Daily Report for 13th June 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 14.6 °C (+2.7) 05:21 12.3 °C (+0.8) 15.4 °C (+3.5), 2025 5.6 °C (-6.3), 2012
Maximum Temperature 18.5 °C (-2.4) 13:43 20.1 °C (-0.2) 29.3 °C (+8.4), 2025 14.0 °C (-6.9), 2019
Mean Temperature 16.1 °C (+0.2) 15.9 °C (+0.3) 22.5 °C, 2025 12.7 °C, 2019
Minimum Humidity 75% 15:01 62% 80%, 2019 34%, 2014
Maximum Humidity 88% 22:48 88% 95%, 2011 77%, 2017
Mean Humidity 84% 77% 88%, 2019 56%, 2014
Minimum Pressure 999 hPa 19:18 1014 hPa 1025 hPa, 2022 999 hPa, 2016
Maximum Pressure 1004 hPa 01:17 1019 hPa 1030 hPa, 2021 1004 hPa, 2016
Mean Pressure 1001 hPa 1016 hPa 1027 hPa, 2021 1001 hPa, 2016
Mean Wind Speed 3.4 mph (-1.0) 3.2 mph (-1.2) 9.2 mph, 2013 1.3 mph, 2017
Maximum Wind Speed 9.5 mph 15:26 10.0 mph 18.5 mph, 2013 6.8 mph, 2017
Maximum Gust 13.6 mph 15:27 15.6 mph 29.1 mph, 2013 10.5 mph, 2017
Mean Wind Direction WNW
Rainfall 4.1 mm 17.3 mm (85%) 4.1 mm, 2016
Maximum Hourly Rain 2.0 mm 16:02 2.0 mm, 2016
Maximum 10-min Rain 1.5 mm 15:12 1.5 mm, 2016
Maximum Rain Rate 30 mm/h 10:26 30 mm/h, 2016
Minimum Dew Point 12.1 °C 04:59 8.5 °C 12.7 °C, 2025 2.8 °C, 2012
Maximum Dew Point 14.9 °C 13:35 14.0 °C 17.8 °C, 2023 9.7 °C, 2012
Mean Dew Point 13.4 °C 11.4 °C 15.2 °C, 2025 5.8 °C, 2012
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 14.6 °C 05:21 12.4 °C 15.4 °C, 2025 5.6 °C, 2012
Day Maximum (09-21) 18.5 °C 13:43 20.1 °C 29.3 °C, 2025 14.0 °C, 2019
Max 10m Temp Rise 0.4 °C 14:29 0.4 °C 1.1 °C, 2009 0.4 °C, 2011
Max 1hr Temp Rise 1.3 °C 13:43 1.7 °C 4.6 °C, 2012 1.3 °C, 2015
Max 1hr Hum Rise 8% 16:00 8% 14%, 2020 4%, 2015
Max 10m Temp Fall 0.9 °C 15:13 0.6 °C 1.3 °C, 2020 0.3 °C, 2010
Max 1hr Temp Fall 2.1 °C 16:02 1.9 °C 3.0 °C, 2020 1.0 °C, 2015
Max 1hr Hum Fall 7% 13:50 9% 24%, 2021 6%, 2015
Max 10m Wind Speed 7.0 mph 15:32 7.3 mph 14.8 mph, 2013 4.3 mph, 2014
Minimum Feels-like 16.9 °C 04:59 13.0 °C 18.1 °C, 2015 5.6 °C, 2012
Maximum Feels-like 22.3 °C 13:43 22.8 °C 34.5 °C, 2021 15.7 °C, 2019
Mean Feels-like 19.1 °C 17.8 °C 26.6 °C, 2025 13.4 °C, 2012
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 3.9 °C (-5.1) 7.8 °C (-1.1) 15.5 °C (+6.5), 2021 2.6 °C (-6.4), 2019
Humidity Range 13% 26% 50%, 2012 13%, 2016
Pressure Range 5 hPa 4 hPa 14 hPa, 2024 3 hPa, 2022
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.3 [2%]45 hrs (53%) [23%] 15 [99%], 2021 0 [0%], 2019
Wet Hours 4
[Mean rain rate: 1.0 mm/h]		16 hrs (97%) [5%] 7, 2019 0, 2010
Cloud Cover Overcast with periods of Mostly Cloudy
Events None
Comments Day Showers
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 13th 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