Daily Report for 20th August 2026

Bad date specified. Defaulted to most recent report available.

Measure	Value (anomaly)	Time	Month cumul.	Record High	Record Low
Minimum Temperature	15.5 °C (+1.6)	23:56	15.8 °C (+1.4)	18.4 °C (+4.5), 2018	8.6 °C (-5.3), 2014
Maximum Temperature	23.8 °C (+1.4)	14:56	28.3 °C (+5.5)	24.9 °C (+2.5), 2012	18.9 °C (-3.5), 2014
Mean Temperature	18.8 °C (+1.5)		22.2 °C (+3.4)	21.7 °C, 2018	13.8 °C, 2014
Minimum Humidity	43%	16:11	36%	72%, 2010	34%, 2013
Maximum Humidity	79%	22:50	78%	94%, 2020	79%, 2026
Mean Humidity	65%		56%	84%, 2015	56%, 2013
Minimum Pressure	1005 hPa	06:01	1015 hPa	1026 hPa, 2013	1000 hPa, 2020
Maximum Pressure	1011 hPa	23:57	1020 hPa	1028 hPa, 2013	1005 hPa, 2020
Mean Pressure	1007 hPa		1018 hPa	1027 hPa, 2013	1004 hPa, 2020
Mean Wind Speed	5.7 mph (+1.7)		4.0 mph (-0.0)	13.5 mph, 2016	2.0 mph, 2021
Maximum Wind Speed	17.4 mph	15:21	12.5 mph	26.4 mph, 2016	7.8 mph, 2013
Maximum Gust	26.5 mph	15:22	19.0 mph	45.2 mph, 2016	10.2 mph, 2013
Mean Wind Direction	n/a		SW	WNW, 2026	NE, 2025
Rainfall	0.4 mm		2.0 mm (6%)	4.6 mm, 2011	0.0 mm, 2009
Maximum Hourly Rain	0.4 mm	18:37	0.1 mm	3.6 mm, 2011	0.4 mm, 2015
Maximum 10-min Rain	0.2 mm		0.1 mm	1.4 mm, 2011	0.2 mm, 2015
Maximum Rain Rate	n/a		0.1 mm/h	15 mm/h, 2011	2.0 mm/h, 2015
Minimum Dew Point	9.9 °C	17:32	9.6 °C	15.6 °C, 2018	2.6 °C, 2014
Maximum Dew Point	13.7 °C	19:29	14.9 °C	19.2 °C, 2020	8.6 °C, 2014
Mean Dew Point	11.8 °C		12.3 °C	16.6 °C, 2018	5.3 °C, 2014
Measure	Value	Time	Month cumul.	Record High	Record Low
Night Minimum (21-09)	15.9 °C	05:55	15.8 °C	18.4 °C, 2018	8.6 °C, 2014
Day Maximum (09-21)	23.8 °C	15:29	28.3 °C	24.9 °C, 2012	18.9 °C, 2014
Max 10m Temp Rise	0.9 °C	12:29	0.8 °C	0.9 °C, 2026	0.4 °C, 2010
Max 1hr Temp Rise	2.2 °C	12:44	3.1 °C	2.9 °C, 2013	1.2 °C, 2010
Max 1hr Hum Rise	26%	18:41	12%	26%, 2026	4%, 2010
Max 10m Temp Fall	1.2 °C	17:10	0.8 °C	1.2 °C, 2026	0.2 °C, 2010
Max 1hr Temp Fall	3.4 °C	18:44	2.5 °C	3.4 °C, 2026	0.4 °C, 2010
Max 1hr Hum Fall	11%	09:37	12%	15%, 2013	2%, 2010
Max 10m Wind Speed	12.3 mph	15:11	9.0 mph	21.9 mph, 2016	6.3 mph, 2013
Minimum Feels-like	17.4 °C	23:58	17.6 °C	22.7 °C, 2018	6.9 °C, 2014
Maximum Feels-like	25.7 °C	13:48	31.2 °C	31.1 °C, 2018	18.9 °C, 2014
Mean Feels-like	20.9 °C		24.8 °C	26.7 °C, 2018	13.8 °C, 2014
Air-frost Hrs	0 hrs		0 hrs	0 hrs, 2009	0 hrs, 2009
Minimum PM2.5	0.5 µg/m³	10:25	2.5 µg/m³	0.5 µg/m³, 2026	0.0 µg/m³, 2009
Maximum PM2.5	5.8 µg/m³	19:35	12.2 µg/m³	5.8 µg/m³, 2026	5.8 µg/m³, 2026
Mean PM2.5	2.0 µg/m³		5.5 µg/m³	2.0 µg/m³, 2026	2.0 µg/m³, 2026
Measure	Value (anomaly)		Month cumul.	Record High	Record Low
Temperature Range	8.3 °C (-0.1)		12.6 °C	13.1 °C, 2013	4.2 °C, 2010
Humidity Range	36%		42%	50%, 2020	16%, 2010
Pressure Range	6 hPa		5 hPa	8 hPa, 2009	2 hPa, 2025

Observation	Detail
Sun Hours	n/a
Wet Hours	n/a
Cloud Cover	not available
Events	None
Comments	None known
Observer Absent?	No
Pond Temperature	n/a

Notes: Detailed daily weather report for Hampstead, NW3, London on 20th August 2026. 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.

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Daily Graph of Conditions

Wind direction

Air pollution

Wind rose

Webcam Summary of Cloud Conditions

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