Daily Report for 26th March 2016

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 7.9 °C (+2.8) 02:11 3.2 °C (-1.1) 9.1 °C (+4.0), 2025 -0.2 °C (-5.3), 2013
Maximum Temperature 13.6 °C (+1.4) 17:56 9.8 °C (-1.1) 17.8 °C (+5.6), 2012 1.3 °C (-10.9), 2013
Mean Temperature 9.9 °C (+2.1) 6.5 °C (-1.1) 12.2 °C, 2025 0.7 °C, 2013
Minimum Humidity 62% 00:01 56% 74%, 2023 29%, 2020
Maximum Humidity 89% 12:24 89% 98%, 2014 73%, 2013
Mean Humidity 81% 75% 85%, 2023 60%, 2017
Minimum Pressure 995 hPa 17:46 1012 hPa 1036 hPa, 2012 983 hPa, 2024
Maximum Pressure 1014 hPa 00:22 1020 hPa 1037 hPa, 2012 994 hPa, 2024
Mean Pressure 1004 hPa 1016 hPa 1036 hPa, 2012 988 hPa, 2024
Mean Wind Speed 6.7 mph (+1.5) 4.1 mph (-1.1) 9.4 mph, 2021 2.1 mph, 2019
Maximum Wind Speed 17.4 mph 15:49 10.7 mph 20.3 mph, 2021 7.8 mph, 2025
Maximum Gust 35.9 mph 15:50 19.1 mph 35.9 mph, 2016 11.5 mph, 2025
Mean Wind Direction S
Rainfall 2.6 mm 37.8 mm (116%) 11.6 mm, 2024
Maximum Hourly Rain 1.3 mm 19:48 3.4 mm, 2021
Maximum 10-min Rain 0.6 mm 19:16 1.7 mm, 2021
Maximum Rain Rate 8 mm/h 19:04 16 mm/h, 2010
Minimum Dew Point 1.3 °C 00:02 -1.3 °C 5.1 °C, 2025 -8.0 °C, 2017
Maximum Dew Point 11.2 °C 17:37 5.3 °C 11.2 °C, 2016 -4.5 °C, 2013
Mean Dew Point 6.8 °C 2.0 °C 7.7 °C, 2025 -5.9 °C, 2013
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 7.9 °C 02:11 3.6 °C 9.8 °C, 2025 0.2 °C, 2013
Day Maximum (09-21) 13.6 °C 17:56 9.7 °C 17.8 °C, 2012 1.3 °C, 2013
Max 10m Temp Rise 0.3 °C 10:55 0.5 °C 1.1 °C, 2009 0.1 °C, 2013
Max 1hr Temp Rise 1.4 °C 11:50 1.6 °C 3.4 °C, 2012 0.4 °C, 2013
Max 1hr Hum Rise 6% 09:12 7% 26%, 2014 3%, 2023
Max 10m Temp Fall 0.9 °C 18:45 0.4 °C 1.6 °C, 2014 0.2 °C, 2013
Max 1hr Temp Fall 3.6 °C 19:25 1.5 °C 4.5 °C, 2014 0.5 °C, 2013
Max 1hr Hum Fall 5% 06:44 10% 26%, 2015 3%, 2013
Max 10m Wind Speed 11.9 mph 15:56 7.7 mph 14.9 mph, 2021 5.3 mph, 2025
Minimum Feels-like 3.9 °C 02:05 -0.2 °C 6.7 °C, 2025 -6.2 °C, 2013
Maximum Feels-like 15.4 °C 17:45 9.4 °C 17.8 °C, 2012 -1.1 °C, 2013
Mean Feels-like 8.9 °C 4.6 °C 12.5 °C, 2025 -4.0 °C, 2013
Air-frost Hrs 0 hrs 0.2 hrs 0.3 hrs, 2013 0 hrs, 2009
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 5.7 °C (-1.4) 6.6 °C (-0.0) 14.6 °C (+7.5), 2012 1.5 °C (-5.6), 2013
Humidity Range 27% 32% 60%, 2012 17%, 2013
Pressure Range 19 hPa 8 hPa 20 hPa, 2023 1 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0 [0%]88 hrs (94%) [32%] 11.3 [100%], 2012 0 [0%], 2013
Wet Hours 5
[Mean rain rate: 0.5 mm/h]		46 hrs (104%) [7.4%] 8, 2023 , 2009
Cloud Cover Overcast
Events None
Comments Drizzle/Rain/Showers
Extra Comments
Issues Wind data from Tottenham (TODO: calibration)
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 26th March 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.
View monthly summary

Daily Graph of Conditions

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version

Wind rose