nw3 weather
Hampstead
,
London
Last Full Update: 24 Aug 2026, 12:10 BSTUpdated: 24 Aug 26 12:10
Main
Home Webcam Graphs Forecast Astronomy About
Detailed Data
Rain Sunshine Temperature Wind Humidity Pressure Climate
Historical Data

Data Tables

Daily Monthly

Rankings

Daily Monthly Annual Periods Spells

Reports

Daily Monthly Annual

Charts

Charts Daily Graphs
Other
Photos Blog System External

⚙︎ Site units

Daily Report for 20th August 2011

<<Previous Day
Reset		Next Day>>
MeasureValue (anomaly)TimeMonth cumul.Record HighRecord Low
Minimum Temperature13.2 °C (-0.7)23:5713.7 °C (-0.6)18.4 °C (+4.5), 20188.6 °C (-5.3), 2014
Maximum Temperature21.7 °C (-0.7)12:2022.3 °C (-0.6)24.9 °C (+2.5), 201218.9 °C (-3.5), 2014
Mean Temperature17.0 °C (-0.7)17.8 °C (-0.6)21.7 °C, 201813.8 °C, 2014
Minimum Humidity59%12:1649%72%, 201034%, 2013
Maximum Humidity88%23:5985%94%, 202079%, 2026
Mean Humidity75%68%84%, 201556%, 2013
Minimum Pressure1015 hPa22:461010 hPa1026 hPa, 20131000 hPa, 2020
Maximum Pressure1020 hPa07:381015 hPa1028 hPa, 20131005 hPa, 2020
Mean Pressure1018 hPa1013 hPa1027 hPa, 20131004 hPa, 2020
Mean Wind Speed3.3 mph (-0.7)4.7 mph (+0.7)13.5 mph, 20162.0 mph, 2021
Maximum Wind Speed12.8 mph12.5 mph26.4 mph, 20167.8 mph, 2013
Maximum Gust17.6 mph13:3517.7 mph45.2 mph, 201610.2 mph, 2013
Mean Wind Directionn/aSSWWNW, 2026NE, 2025
Rainfall4.6 mm43.8 mm (126%)4.6 mm, 20110.0 mm, 2009
Maximum Hourly Rain3.6 mm14:381.3 mm3.6 mm, 20110.4 mm, 2015
Maximum 10-min Rain1.4 mm14:200.4 mm1.4 mm, 20110.2 mm, 2015
Maximum Rain Rate15 mm/h14:178 mm/h15 mm/h, 20112.0 mm/h, 2015
Minimum Dew Point9.7 °C00:568.7 °C15.6 °C, 20182.6 °C, 2014
Maximum Dew Point14.6 °C19:1714.0 °C19.2 °C, 20208.6 °C, 2014
Mean Dew Point12.5 °C11.3 °C16.6 °C, 20185.3 °C, 2014
MeasureValueTimeMonth cumul.Record HighRecord Low
Night Minimum (21-09)14.4 °C06:0013.9 °C18.4 °C, 20188.6 °C, 2014
Day Maximum (09-21)21.7 °C12:1922.3 °C24.9 °C, 201218.9 °C, 2014
Max 10m Temp Rise0.6 °C08:200.6 °C0.9 °C, 20260.4 °C, 2010
Max 1hr Temp Rise2.3 °C08:492.2 °C2.9 °C, 20131.2 °C, 2010
Max 1hr Hum Rise12%14:449%26%, 20264%, 2010
Max 10m Temp Fall0.2 °C20:250.6 °C1.2 °C, 20260.2 °C, 2010
Max 1hr Temp Fall0.4 °C20:321.8 °C3.4 °C, 20260.4 °C, 2010
Max 1hr Hum Fall2%12:1111%15%, 20132%, 2010
Max 10m Wind Speed7.8 mph12:178.4 mph21.9 mph, 20166.3 mph, 2013
Minimum Feels-like15.1 °C23:5615.1 °C22.7 °C, 20186.9 °C, 2014
Maximum Feels-like25.0 °C12:0524.6 °C31.1 °C, 201818.9 °C, 2014
Mean Feels-like19.6 °C19.8 °C26.7 °C, 201813.8 °C, 2014
Air-frost Hrs0 hrs0 hrs0 hrs, 20090 hrs, 2009
Minimum PM2.5n/a0.0 µg/m30.5 µg/m3, 20260.0 µg/m3, 2009
Maximum PM2.5n/a0.0 µg/m35.8 µg/m3, 20265.8 µg/m3, 2026
Mean PM2.5n/a0.0 µg/m32.0 µg/m3, 20262.0 µg/m3, 2026
MeasureValue (anomaly)Month cumul.Record HighRecord Low
Temperature Range8.5 °C (+0.1)8.5 °C13.1 °C, 20134.2 °C, 2010
Humidity Range29%36%50%, 202016%, 2010
Pressure Range5 hPa5 hPa8 hPa, 20092 hPa, 2025
ObservationDetail
Sun Hours7.5 hrs [57%]
Wet Hours2 hrs
Cloud Coveram: Partly Cloudy with periods of Mostly Cloudy
pm: Overcast transitioned to Sunny
EventsNone
Comments1330-1530 M Rn
Observer Absent?Yes - observations may be unreliable
Pond Temperature0.0 °C
Notes
Detailed daily weather report for Hampstead, NW3, London on 20th August 2011. Times of extremes use the midpoint of the longest continuous period at that value. Cumulative anomalies are relative to the expected value for the month-to-date. Sun and wet hours are derived from webcam/rainfall analysis and may be adjusted. Data should be viewed with appropriate caution.

View monthly summary

Daily Graph of Conditions

Wind direction

Air pollution

Wind rose

Webcam Summary of Cloud Conditions

daycamsum

⬆︎ Top

📱︎ Lite view

🏠︎ Home

⚒︎ Built by Ben Masschelein-Rodgers

🌲︎ Located in Hampstead, London

☀︎ Sister station: RWC Weather

📧︎ Contact / Social

© nw3weather 2010-2026

🔧︎ Version 5.0 -- page load: 0.193 s