Daily Report for 29th February 2024

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 5.7 °C (+2.3) 20:22 6.4 °C (+3.4) 9.5 °C (+6.1), 2012 -4.8 °C (-8.2), 2018
Maximum Temperature 11.2 °C (+1.7) 00:38 11.4 °C (+3.1) 12.6 °C (+3.1), 2012 0.0 °C (-9.5), 2018
Mean Temperature 9.0 °C (+2.0) 8.9 °C (+3.2) 10.9 °C, 2012 -2.8 °C, 2018
Minimum Humidity 82% 18:04 78% 91%, 2022 47%, 2015
Maximum Humidity 95% 12:20 94% 98%, 2014 84%, 2016
Mean Humidity 91% 88% 94%, 2022 64%, 2016
Minimum Pressure 1002 hPa 23:54 1006 hPa 1035 hPa, 2011 982 hPa, 2020
Maximum Pressure 1011 hPa 00:01 1015 hPa 1039 hPa, 2011 994 hPa, 2020
Mean Pressure 1005 hPa 1011 hPa 1037 hPa, 2011 987 hPa, 2020
Mean Wind Speed 5.6 mph (+0.5) 6.5 mph (+1.4) 12.5 mph, 2018 1.8 mph, 2016
Maximum Wind Speed 17.2 mph 00:23 15.6 mph 22.8 mph, 2020 7.6 mph, 2014
Maximum Gust 26.5 mph 00:24 23.8 mph 41.5 mph, 2020 10.2 mph, 2014
Mean Wind Direction W
Rainfall 6.5 mm 83.1 mm (185%) 9.1 mm, 2022
Maximum Hourly Rain 1.7 mm 12:43 3.2 mm, 2015
Maximum 10-min Rain 0.7 mm 12:18 2.6 mm, 2015
Maximum Rain Rate 4.8 mm/h 15:16 30 mm/h, 2015
Minimum Dew Point 3.7 °C 18:48 4.7 °C 7.2 °C, 2012 -8.4 °C, 2018
Maximum Dew Point 10.0 °C 00:01 9.1 °C 10.1 °C, 2015 -3.6 °C, 2018
Mean Dew Point 7.5 °C 6.9 °C 8.2 °C, 2012 -5.8 °C, 2018
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 10.1 °C * 07:22 7.1 °C 10.1 °C, 2024 -5.1 °C, 2018
Day Maximum (09-21) * 10.8 °C * 10:07 11.4 °C 12.6 °C, 2012 0.0 °C, 2018
Max 10m Temp Rise 0.2 °C 21:05 0.4 °C 0.9 °C, 2020 0.2 °C, 2012
Max 1hr Temp Rise 0.4 °C 08:26 1.2 °C 2.8 °C, 2020 0.4 °C, 2011
Max 1hr Hum Rise 6% 18:53 5% 22%, 2020 2%, 2012
Max 10m Temp Fall 0.5 °C 17:44 0.4 °C 1.8 °C, 2020 0.2 °C, 2012
Max 1hr Temp Fall 1.8 °C 18:29 1.2 °C 2.7 °C, 2020 0.6 °C, 2012
Max 1hr Hum Fall 9% 17:53 7% 24%, 2015 2%, 2022
Max 10m Wind Speed 13.2 mph 00:32 11.7 mph 18.4 mph, 2020 5.7 mph, 2014
Minimum Feels-like 2.1 °C 23:51 3.7 °C 7.8 °C, 2012 -14.2 °C, 2018
Maximum Feels-like 12.4 °C 00:16 12.2 °C 13.3 °C, 2012 -5.7 °C, 2018
Mean Feels-like 8.8 °C 8.2 °C 11.0 °C, 2012 -10.1 °C, 2018
Air-frost Hrs 0 hrs 0.1 hrs 24 hrs, 2018 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.5 °C (-0.6) 5.1 °C (-0.3) 9.5 °C (+3.4), 2010 1.9 °C (-4.2), 2011
Humidity Range 13% 16% 49%, 2015 4%, 2022
Pressure Range 9 hPa 10 hPa 15 hPa, 2018 2 hPa, 2012
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]47 hrs (58%) [18%] 7 [72%], 2010 0 [0%], 2011
Wet Hours 8
[Mean rain rate: 0.8 mm/h]
92 hrs (176%) [13%] 14, 2022 , 2009
Cloud Cover Overcast
Events None
Comments rn
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature (Heath) 7.7 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 29th February 2024.
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

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Webcam Summary of Cloud Conditions

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Wind rose