Daily Report for 7th March 2023

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature -1.2 °C (-4.9) 21:34 2.1 °C (-1.5) 7.5 °C (+3.8), 2025 -3.7 °C (-7.4), 2010
Maximum Temperature 5.7 °C (-4.4) 00:16 6.9 °C (-3.0) 17.0 °C (+6.9), 2025 5.4 °C (-4.7), 2010
Mean Temperature 2.3 °C (-4.6) 4.5 °C (-2.2) 12.6 °C, 2025 0.1 °C, 2010
Minimum Humidity 78% 13:02 71% 79%, 2013 40%, 2015
Maximum Humidity 95% 23:53 89% 98%, 2013 79%, 2017
Mean Humidity 89% 81% 93%, 2013 63%, 2015
Minimum Pressure 999 hPa 23:54 1017 hPa 1031 hPa, 2010 986 hPa, 2019
Maximum Pressure 1002 hPa 18:13 1024 hPa 1034 hPa, 2010 999 hPa, 2018
Mean Pressure 1001 hPa 1021 hPa 1032 hPa, 2010 993 hPa, 2019
Mean Wind Speed 2.2 mph (-3.0) 4.1 mph (-1.1) 10.6 mph, 2009 0.9 mph, 2021
Maximum Wind Speed 10.5 mph 02:00 12.0 mph 25.5 mph, 2019 7.6 mph, 2021
Maximum Gust 12.7 mph 02:02 17.1 mph 43.8 mph, 2019 10.9 mph, 2013
Mean Wind Direction NNW
Rainfall / Snow-melt approx. 3.4 mm 4.4 mm (50%) 5.5 mm, 2012
Maximum Hourly Rain 1.7 mm 02:21 2.9 mm, 2012
Maximum 10-min Rain 0.5 mm 01:36 1.7 mm, 2012
Maximum Rain Rate 2.4 mm/h 01:57 25 mm/h, 2012
Minimum Dew Point -2.4 °C 21:23 -0.5 °C 4.7 °C, 2025 -9.0 °C, 2010
Maximum Dew Point 4.2 °C 00:24 3.3 °C 10.2 °C, 2014 -3.7 °C, 2010
Mean Dew Point 0.7 °C 1.5 °C 7.3 °C, 2013 -6.3 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) * 1.5 °C * 04:30 2.4 °C 7.5 °C, 2025 -3.7 °C, 2010
Day Maximum (09-21) * 4.7 °C * 12:59 6.7 °C 17.0 °C, 2025 4.7 °C, 2023
Max 10m Temp Rise 0.3 °C 12:11 0.4 °C 1.2 °C, 2025 0.2 °C, 2013
Max 1hr Temp Rise 0.9 °C 23:56 1.2 °C 4.4 °C, 2025 0.7 °C, 2013
Max 1hr Hum Rise 8% 13:38 6% 12%, 2019 3%, 2020
Max 10m Temp Fall 1.1 °C 13:11 0.4 °C 1.2 °C, 2012 0.1 °C, 2013
Max 1hr Temp Fall 2.1 °C 02:21 1.1 °C 2.6 °C, 2014 0.4 °C, 2013
Max 1hr Hum Fall 9% 13:02 6% 14%, 2012 2%, 2013
Max 10m Wind Speed 7.2 mph 02:01 9.0 mph 20.2 mph, 2019 5.1 mph, 2021
Minimum Feels-like -3.4 °C 23:51 -1.8 °C 6.8 °C, 2025 -7.1 °C, 2010
Maximum Feels-like 5.7 °C 00:31 6.4 °C 17.7 °C, 2025 3.6 °C, 2010
Mean Feels-like 1.1 °C 2.3 °C 12.8 °C, 2025 -3.1 °C, 2010
Air-frost Hrs 4 hrs 0.6 hrs 14 hrs, 2010 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 6.9 °C (+0.5) 4.8 °C (-1.5) 9.8 °C (+3.4), 2020 2.4 °C (-4.0), 2013
Humidity Range 17% 18% 46%, 2009 13%, 2020
Pressure Range 3 hPa 7 hPa 19 hPa, 2019 2 hPa, 2025
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.4 [4%]7.6 hrs (32%) [11%] 10.5 [104%], 2010 0 [0%], 2013
Wet Hours 5
[Mean rain rate: 0.7 mm/h]		7 hrs (58%) [4.2%] 17, 2013 , 2009
Cloud Cover unknown
Events Snowfall: ~0.3 cm
Comments wet snow sh 13
Extra Comments
Issues None known
Observer Absent? Yes - observations may be unreliable
Pond Temperature @ Hampstead Heath 5.4 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 7th March 2023.
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

daycamsumFull resolution individual images at up-to 5 minute intervals

Wind rose