Daily Report for 2nd January 2013

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Measure Value (anomaly) Time Month cumul. Record High Record Low
Minimum Temperature 2.8 °C (-0.4) 05:02 3.3 °C (+0.1) 9.9 °C (+6.7), 2024 -1.5 °C (-4.7), 2010
Maximum Temperature 10.6 °C (+2.8) 22:04 9.9 °C (+2.1) 13.2 °C (+5.4), 2022 3.2 °C (-4.6), 2011
Mean Temperature 6.6 °C (+1.2) 6.2 °C (+1.1) 11.3 °C, 2022 0.7 °C, 2010
Minimum Humidity 82% 00:08 74% 88%, 2016 51%, 2015
Maximum Humidity 98% 19:07 96% 98%, 2013 82%, 2017
Mean Humidity 92% 87% 92%, 2013 69%, 2015
Minimum Pressure 1018 hPa 00:12 1008 hPa 1041 hPa, 2019 977 hPa, 2024
Maximum Pressure 1027 hPa 22:41 1022 hPa 1044 hPa, 2019 992 hPa, 2024
Mean Pressure 1023 hPa 1015 hPa 1043 hPa, 2019 986 hPa, 2024
Mean Wind Speed 4.9 mph (-0.3) 5.1 mph (-0.1) 10.1 mph, 2024 2.1 mph, 2021
Maximum Wind Speed 12.8 mph 18:45 11.9 mph 32.8 mph, 2024 7.4 mph, 2011
Maximum Gust 15.4 mph 18:46 16.4 mph 54.1 mph, 2024 9.4 mph, 2011
Mean Wind Direction WSW
Rainfall 1.1 mm 2.6 mm (68%) 12.8 mm, 2018
Maximum Hourly Rain 0.5 mm 14:48 5.5 mm, 2018
Maximum 10-min Rain 0.3 mm 15:49 3.3 mm, 2018
Maximum Rain Rate 0.7 mm/h 14:48 53 mm/h, 2018
Minimum Dew Point 1.0 °C 02:51 0.9 °C 7.3 °C, 2024 -3.5 °C, 2025
Maximum Dew Point 10.1 °C 21:55 9.2 °C 11.8 °C, 2024 0.2 °C, 2010
Mean Dew Point 5.3 °C 4.2 °C 9.5 °C, 2024 -1.7 °C, 2010
Measure Value Time Month cumul. Record High Record Low
Night Minimum (21-09) 2.8 °C 05:02 3.3 °C 11.1 °C, 2022 -1.5 °C, 2010
Day Maximum (09-21) * 10.5 °C * 20:53 8.9 °C 12.8 °C, 2024 3.2 °C, 2011
Max 10m Temp Rise 0.3 °C 06:19 0.3 °C 0.4 °C, 2014 0.1 °C, 2015
Max 1hr Temp Rise 0.9 °C 18:35 1.0 °C 1.4 °C, 2010 0.3 °C, 2015
Max 1hr Hum Rise 4% 13:56 4% 8%, 2018 1%, 2011
Max 10m Temp Fall 0.2 °C 02:44 0.3 °C 0.4 °C, 2014 0.1 °C, 2016
Max 1hr Temp Fall 0.6 °C 02:44 1.1 °C 2.1 °C, 2023 0.4 °C, 2016
Max 1hr Hum Fall 3% 11:04 8% 22%, 2015 1%, 2016
Max 10m Wind Speed 9.2 mph 18:51 9.0 mph 24.4 mph, 2024 5.0 mph, 2011
Minimum Feels-like -0.7 °C 05:54 -0.5 °C 6.2 °C, 2024 -5.6 °C, 2025
Maximum Feels-like 11.9 °C 21:14 10.8 °C 15.2 °C, 2022 3.0 °C, 2011
Mean Feels-like 5.0 °C 4.2 °C 12.1 °C, 2024 -0.9 °C, 2010
Air-frost Hrs 0 hrs 0 hrs 6 hrs, 2010 0 hrs, 2011
Measure Value (anomaly) Month cumul. Record High Record Low
Temperature Range 7.8 °C (+3.2) 6.6 °C (+2.0) 7.8 °C (+3.2), 2013 1.7 °C (-2.9), 2019
Humidity Range 16% 22% 42%, 2015 4%, 2016
Pressure Range 9 hPa 14 hPa 23 hPa, 2018 2 hPa, 2011
Measure Value [% of max] Month cumul. Record High Record Low
Sun Hours 0.1 [1%]6.6 hrs (157%) [46%] 6.5 [92%], 2012 0 [0%], 2016
Wet Hours 2
[Mean rain rate: 0.6 mm/h]		3 hrs (69%) [6.3%] 9, 2016 , 2009
Cloud Cover Overcast
Events None
Comments 13-16 broken Slight Rain/Drizzle
Extra Comments extra tip assigned from 7th
Issues None known
Observer Absent? No
Pond Temperature @ Hampstead Heath 0.0 °C
Notes
Detailed daily weather report for Hampstead nw3 in London on 2nd January 2013.
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

day graph

Webcam Summary of Cloud Conditions

daycamsumLarge resolution version

Wind rose