Daily Report for 9th September 2026

Bad date specified. Defaulted to most recent report available.

Measure	Value (anomaly)	Time	Month cumul.	Record High	Record Low
Minimum Temperature	10.7 °C (-1.5)	06:53	14.2 °C (+1.7)	17.6 °C (+5.4), 2023	8.8 °C (-3.4), 2025
Maximum Temperature	19.4 °C (-0.8)	17:23	22.5 °C (+1.7)	31.7 °C (+11.5), 2023	12.9 °C (-7.3), 2013
Mean Temperature	14.6 °C (-1.1)		18.3 °C (+1.7)	24.9 °C, 2023	11.1 °C, 2013
Minimum Humidity	52%	17:34	52%	84%, 2013	30%, 2012
Maximum Humidity	87%	06:42	86%	96%, 2011	82%, 2009
Mean Humidity	72%		70%	92%, 2013	60%, 2012
Minimum Pressure	1013 hPa	00:00	1015 hPa	1023 hPa, 2020	996 hPa, 2017
Maximum Pressure	1020 hPa	21:32	1021 hPa	1033 hPa, 2009	1002 hPa, 2017
Mean Pressure	1017 hPa		1018 hPa	1027 hPa, 2009	998 hPa, 2017
Mean Wind Speed	3.2 mph (-0.7)		5.2 mph (+1.3)	11.4 mph, 2016	1.3 mph, 2023
Maximum Wind Speed	10.4 mph	09:42	13.9 mph	21.9 mph, 2016	7.0 mph, 2023
Maximum Gust	15.0 mph	09:22	23.3 mph	33.9 mph, 2016	10.4 mph, 2023
Mean Wind Direction	n/a		W	N, 2013	N, 2009
Rainfall	0.0 mm		17.8 mm (119%)	6.8 mm, 2013	0.0 mm, 2009
Maximum Hourly Rain	n/a		0.5 mm	3.6 mm, 2011	0.3 mm, 2021
Maximum 10-min Rain	n/a		0.3 mm	1.9 mm, 2011	0.2 mm, 2025
Maximum Rain Rate	n/a		2.0 mm/h	20 mm/h, 2011	7 mm/h, 2022
Minimum Dew Point	8.6 °C	06:02	10.5 °C	15.6 °C, 2023	5.4 °C, 2009
Maximum Dew Point	11.0 °C	10:44	14.8 °C	21.1 °C, 2023	11.0 °C, 2026
Mean Dew Point	9.4 °C		12.5 °C	18.2 °C, 2023	9.1 °C, 2009
Measure	Value	Time	Month cumul.	Record High	Record Low
Night Minimum (21-09)	10.7 °C	06:34	14.8 °C	17.6 °C, 2023	8.8 °C, 2025
Day Maximum (09-21)	19.4 °C	17:23	22.2 °C	31.7 °C, 2023	12.9 °C, 2013
Max 10m Temp Rise	0.6 °C	08:19	0.6 °C	1.1 °C, 2025	0.3 °C, 2011
Max 1hr Temp Rise	2.5 °C	08:56	2.2 °C	5.6 °C, 2025	1.0 °C, 2013
Max 1hr Hum Rise	11%	19:44	8%	19%, 2017	3%, 2011
Max 10m Temp Fall	0.7 °C	19:50	0.6 °C	0.9 °C, 2017	0.2 °C, 2013
Max 1hr Temp Fall	3.0 °C	20:18	2.0 °C	3.0 °C, 2026	0.6 °C, 2019
Max 1hr Hum Fall	10%	09:06	10%	26%, 2015	5%, 2013
Max 10m Wind Speed	8.1 mph	09:57	10.2 mph	17.2 mph, 2016	4.3 mph, 2023
Minimum Feels-like	11.4 °C	06:12	16.0 °C	22.1 °C, 2023	7.8 °C, 2013
Maximum Feels-like	20.5 °C	17:19	25.6 °C	39.7 °C, 2023	15.2 °C, 2013
Mean Feels-like	15.6 °C		20.9 °C	31.1 °C, 2023	12.3 °C, 2013
Air-frost Hrs	0 hrs		0 hrs	0 hrs, 2009	0 hrs, 2009
Minimum PM2.5	1.0 µg/m³	15:07	1.2 µg/m³	1.0 µg/m³, 2026	0.0 µg/m³, 2009
Maximum PM2.5	17.4 µg/m³	22:40	11.1 µg/m³	17.4 µg/m³, 2026	17.4 µg/m³, 2026
Mean PM2.5	3.0 µg/m³		3.5 µg/m³	3.0 µg/m³, 2026	3.0 µg/m³, 2026
Measure	Value (anomaly)		Month cumul.	Record High	Record Low
Temperature Range	8.7 °C (+0.7)		8.3 °C	17.5 °C, 2012	3.6 °C, 2013
Humidity Range	35%		34%	54%, 2012	11%, 2013
Pressure Range	8 hPa		6 hPa	12 hPa, 2009	2 hPa, 2023

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 9th September 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.

View monthly summary

Daily Graph of Conditions

Wind direction

Air pollution

Wind rose

Webcam Summary of Cloud Conditions

Full resolution images at up-to 5 minute intervals