Daily Report for 13th November 2015

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 7.3 °C (+1.6) 21:27 10.6 °C (+4.3) 10.3 °C (+4.6), 2009 2.3 °C (-3.4), 2017
Maximum Temperature 13.9 °C (+3.3) 00:26 15.0 °C (+3.6) 15.4 °C (+4.8), 2009 7.1 °C (-3.5), 2017
Mean Temperature 9.7 °C (+2.4) 13.0 °C (+3.9) 12.4 °C, 2012 4.6 °C, 2017
Minimum Humidity 63% 11:31 83% 91%, 2022 63%, 2015
Maximum Humidity 87% 00:55 91% 99%, 2023 80%, 2016
Mean Humidity 72% 88% 96%, 2022 72%, 2015
Minimum Pressure 1014 hPa 00:15 1016 hPa 1034 hPa, 2024 990 hPa, 2019
Maximum Pressure 1026 hPa 22:55 1023 hPa 1037 hPa, 2024 995 hPa, 2010
Mean Pressure 1020 hPa 1019 hPa 1036 hPa, 2024 993 hPa, 2010
Mean Wind Speed 8.8 mph (+4.2) 5.6 mph (+1.0) 8.8 mph, 2015 2.3 mph, 2024
Maximum Wind Speed 20.8 mph 11:18 13.9 mph 23.3 mph, 2023 6.9 mph, 2022
Maximum Gust 27.7 mph 23:12 20.2 mph 35.7 mph, 2023 10.4 mph, 2022
Mean Wind Direction WSW
Rainfall 1.9 mm 22.8 mm (79%) 12.2 mm, 2023
Maximum Hourly Rain 1.3 mm 13:09 7.4 mm, 2023
Maximum 10-min Rain 1.3 mm 13:09 1.6 mm, 2023
Maximum Rain Rate 54 mm/h 13:06 54 mm/h, 2015
Minimum Dew Point 2.3 °C 13:10 8.7 °C 9.7 °C, 2009 -0.9 °C, 2017
Maximum Dew Point 11.7 °C 00:40 13.2 °C 13.7 °C, 2023 2.7 °C, 2017
Mean Dew Point 4.9 °C 10.9 °C 10.8 °C, 2009 1.0 °C, 2017
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 9.0 °C * 07:38 11.0 °C 10.6 °C, 2011 2.3 °C, 2017
Day Maximum (09-21) * 11.6 °C * 11:04 14.8 °C 15.4 °C, 2009 7.1 °C, 2017
Max 10m Temp Rise 0.4 °C 09:41 0.3 °C 0.9 °C, 2023 0.2 °C, 2010
Max 1hr Temp Rise 1.4 °C 09:41 1.0 °C 2.8 °C, 2023 0.7 °C, 2010
Max 1hr Hum Rise 9% 14:02 3% 9%, 2015 2%, 2016
Max 10m Temp Fall 2.1 °C 13:10 0.4 °C 2.1 °C, 2015 0.2 °C, 2012
Max 1hr Temp Fall 2.0 °C 13:23 1.1 °C 2.0 °C, 2015 0.5 °C, 2014
Max 1hr Hum Fall 10% 02:09 3% 19%, 2023 2%, 2016
Max 10m Wind Speed 16.0 mph 11:58 10.4 mph 16.4 mph, 2023 5.3 mph, 2022
Minimum Feels-like 3.3 °C 23:12 10.9 °C 11.5 °C, 2009 -2.9 °C, 2017
Maximum Feels-like 16.0 °C 00:24 17.8 °C 17.8 °C, 2023 7.0 °C, 2017
Mean Feels-like 8.0 °C 14.7 °C 13.9 °C, 2012 2.0 °C, 2017
Air-frost Hrs 0 hrs 0 hrs 0 hrs, 2009 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.6 °C (+1.7) 4.4 °C (-0.8) 6.8 °C (+1.9), 2013 2.1 °C (-2.8), 2021
Humidity Range 24% 8% 30%, 2023 6%, 2016
Pressure Range 12 hPa 7 hPa 13 hPa, 2018 4 hPa, 2024
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 4.5 [56%]15 hrs (39%) [14%] 7.8 [97%], 2013 0 [0%], 2009
Wet Hours 2
[Mean rain rate: 0.9 mm/h]		25 hrs (92%) [8.1%] 8, 2009 0, 2010
Cloud Cover Sunny with periods of Partly Cloudy
Events None
Comments 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 November 2015.
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

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version

Wind rose