Daily Report for 29th November 2019

<<Previous Day
Reset 		Next Day>>
Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 0.1 °C (-4.1) 23:58 4.5 °C (-0.9) 9.6 °C (+5.4), 2015 -1.8 °C (-6.0), 2021
Maximum Temperature 6.6 °C (-3.0) 13:41 9.6 °C (-1.1) 13.7 °C (+4.1), 2018 1.1 °C (-8.5), 2010
Mean Temperature 3.8 °C (-3.5) 7.2 °C (-1.0) 12.0 °C, 2018 0.1 °C, 2010
Minimum Humidity 80% 14:33 79% 94%, 2022 47%, 2016
Maximum Humidity 95% 21:50 95% 98%, 2009 79%, 2016
Mean Humidity 89% 89% 96%, 2009 68%, 2016
Minimum Pressure 1007 hPa 00:06 996 hPa 1032 hPa, 2016 982 hPa, 2009
Maximum Pressure 1024 hPa 23:55 1006 hPa 1035 hPa, 2016 985 hPa, 2009
Mean Pressure 1017 hPa 1001 hPa 1033 hPa, 2016 984 hPa, 2009
Mean Wind Speed 2.6 mph (-2.0) 4.1 mph (-0.5) 11.2 mph, 2015 0.7 mph, 2020
Maximum Wind Speed 8.1 mph 04:43 11.5 mph 27.9 mph, 2015 4.5 mph, 2016
Maximum Gust 12.0 mph 09:33 18.3 mph 47.2 mph, 2018 7.3 mph, 2016
Mean Wind Direction N
Rainfall 0.9 mm 62.2 mm (96%) 16.9 mm, 2009
Maximum Hourly Rain 0.9 mm 01:01 4.3 mm, 2015
Maximum 10-min Rain 0.4 mm 00:11 2.1 mm, 2015
Maximum Rain Rate 2.6 mm/h 00:09 36 mm/h, 2015
Minimum Dew Point -0.7 °C 23:58 3.1 °C 6.8 °C, 2018 -5.7 °C, 2016
Maximum Dew Point 4.9 °C 00:07 7.5 °C 11.4 °C, 2018 -1.0 °C, 2016
Mean Dew Point 2.1 °C 5.5 °C 9.5 °C, 2018 -4.1 °C, 2016
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 2.3 °C * 07:56 5.0 °C 11.8 °C, 2018 -1.8 °C, 2021
Day Maximum (09-21) 6.6 °C 13:42 9.5 °C 13.7 °C, 2018 1.1 °C, 2010
Max 10m Temp Rise 0.3 °C 10:22 0.4 °C 0.7 °C, 2024 0.1 °C, 2020
Max 1hr Temp Rise 1.4 °C 10:35 1.3 °C 2.5 °C, 2024 0.3 °C, 2020
Max 1hr Hum Rise 5% 16:16 5% 11%, 2015 1%, 2022
Max 10m Temp Fall 0.4 °C 15:58 0.4 °C 0.8 °C, 2009 0.2 °C, 2010
Max 1hr Temp Fall 2.0 °C 16:52 1.2 °C 2.5 °C, 2016 0.4 °C, 2020
Max 1hr Hum Fall 5% 11:16 6% 21%, 2013 1%, 2022
Max 10m Wind Speed 7.0 mph 09:21 8.5 mph 20.0 mph, 2015 3.7 mph, 2016
Minimum Feels-like -1.9 °C 07:54 1.4 °C 6.4 °C, 2014 -8.0 °C, 2021
Maximum Feels-like 6.6 °C 13:40 9.9 °C 15.1 °C, 2018 0.6 °C, 2010
Mean Feels-like 2.3 °C 6.0 °C 12.8 °C, 2018 -3.4 °C, 2010
Air-frost Hrs 0 hrs 0.3 hrs 10 hrs, 2021 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.5 °C (+1.1) 5.1 °C (-0.2) 8.0 °C (+2.6), 2024 1.7 °C (-3.7), 2022
Humidity Range 15% 15% 36%, 2013 3%, 2022
Pressure Range 17 hPa 10 hPa 17 hPa, 2019 3 hPa, 2009
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 7.4 [100%]67 hrs (82%) [29%] 7.4 [100%], 2016 0 [0%], 2015
Wet Hours 1
[Mean rain rate: 0.9 mm/h]		90 hrs (148%) [13%] 14, 2009 0, 2010
Cloud Cover Sunny
Events Maximum possible sunshine
Comments 00 rn
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 5.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 29th November 2019.
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

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose