Daily Report for 24th September 2026

Bad date specified. Defaulted to most recent report available.

Measure	Value (anomaly)	Time	Month cumul.	Record High	Record Low
Minimum Temperature	9.8 °C (-1.0)	04:40	13.6 °C (+1.7)	14.7 °C (+3.9), 2019	6.0 °C (-4.8), 2018
Maximum Temperature	21.2 °C (+3.5)	15:30	22.3 °C (+2.7)	22.5 °C (+4.8), 2016	13.6 °C (-4.1), 2010
Mean Temperature	15.5 °C (+1.3)		17.9 °C (+2.2)	18.0 °C, 2016	10.6 °C, 2018
Minimum Humidity	57%	16:32	53%	80%, 2019	37%, 2025
Maximum Humidity	89%	05:29	87%	98%, 2012	81%, 2016
Mean Humidity	73%		72%	91%, 2019	64%, 2016
Minimum Pressure	1022 hPa	23:56	1018 hPa	1031 hPa, 2018	985 hPa, 2012
Maximum Pressure	1028 hPa	00:23	1023 hPa	1039 hPa, 2018	996 hPa, 2012
Mean Pressure	1026 hPa		1021 hPa	1036 hPa, 2018	989 hPa, 2012
Mean Wind Speed	2.0 mph (-1.9)		4.5 mph (+0.6)	8.6 mph, 2016	1.3 mph, 2013
Maximum Wind Speed	8.1 mph	14:49	12.8 mph	22.9 mph, 2016	6.0 mph, 2013
Maximum Gust	11.5 mph	15:24	21.2 mph	35.5 mph, 2016	7.6 mph, 2013
Mean Wind Direction	n/a		W	NNW, 2018	NE, 2022
Rainfall	0.0 mm		26.2 mm (66%)	32.0 mm, 2019	0.0 mm, 2009
Maximum Hourly Rain	n/a		0.4 mm	10.3 mm, 2019	0.8 mm, 2010
Maximum 10-min Rain	n/a		0.2 mm	4.4 mm, 2019	0.4 mm, 2014
Maximum Rain Rate	n/a		1.6 mm/h	66 mm/h, 2019	2.4 mm/h, 2024
Minimum Dew Point	7.7 °C	04:40	9.7 °C	13.5 °C, 2019	1.8 °C, 2025
Maximum Dew Point	12.8 °C	15:21	15.0 °C	17.3 °C, 2013	6.8 °C, 2018
Mean Dew Point	10.4 °C		12.4 °C	15.0 °C, 2019	5.4 °C, 2018
Measure	Value	Time	Month cumul.	Record High	Record Low
Night Minimum (21-09)	9.8 °C	04:40	14.2 °C	15.7 °C, 2019	6.1 °C, 2018
Day Maximum (09-21)	21.2 °C	15:40	22.2 °C	22.5 °C, 2016	13.6 °C, 2010
Max 10m Temp Rise	0.6 °C	11:17	0.6 °C	0.9 °C, 2011	0.3 °C, 2010
Max 1hr Temp Rise	2.5 °C	12:06	2.4 °C	4.0 °C, 2011	1.0 °C, 2010
Max 1hr Hum Rise	6%	01:01	8%	19%, 2020	3%, 2010
Max 10m Temp Fall	0.3 °C	01:11	0.6 °C	1.5 °C, 2020	0.2 °C, 2016
Max 1hr Temp Fall	1.2 °C	01:36	1.8 °C	4.1 °C, 2020	0.8 °C, 2010
Max 1hr Hum Fall	10%	11:37	11%	21%, 2014	4%, 2023
Max 10m Wind Speed	5.6 mph	16:34	9.4 mph	18.6 mph, 2016	3.9 mph, 2013
Minimum Feels-like	10.1 °C	04:33	15.2 °C	17.8 °C, 2019	4.1 °C, 2018
Maximum Feels-like	23.8 °C	15:20	25.5 °C	27.2 °C, 2021	15.9 °C, 2018
Mean Feels-like	17.0 °C		20.5 °C	20.9 °C, 2021	10.2 °C, 2018
Air-frost Hrs	0 hrs		0 hrs	0 hrs, 2009	0 hrs, 2009
Minimum PM2.5	1.9 µg/m³	02:27	1.3 µg/m³	1.9 µg/m³, 2026	0.0 µg/m³, 2009
Maximum PM2.5	10.2 µg/m³	21:50	14.0 µg/m³	10.2 µg/m³, 2026	10.2 µg/m³, 2026
Mean PM2.5	3.7 µg/m³		4.4 µg/m³	3.7 µg/m³, 2026	3.7 µg/m³, 2026
Measure	Value (anomaly)		Month cumul.	Record High	Record Low
Temperature Range	11.4 °C (+4.4)		8.7 °C	12.1 °C, 2011	3.4 °C, 2024
Humidity Range	32%		34%	53%, 2025	12%, 2023
Pressure Range	6 hPa		5 hPa	13 hPa, 2010	2 hPa, 2009

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 24th 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