Daily Report for 23rd June 2026

Measure	Value (anomaly)	Time	Month cumul.	Record High	Record Low
Minimum Temperature	18.5 °C (+5.9)	03:45	13.6 °C (+1.9)	18.5 °C (+5.9), 2026	7.7 °C (-4.9), 2021
Maximum Temperature	33.9 °C (+12.3)	17:04	22.8 °C (+2.3)	33.9 °C (+12.3), 2026	17.2 °C (-4.4), 2013
Mean Temperature	25.8 °C (+9.1)		17.9 °C (+2.1)	25.8 °C, 2026	14.9 °C, 2013
Minimum Humidity	39%	15:34	54%	85%, 2016	24%, 2018
Maximum Humidity	93%	07:52	87%	93%, 2026	69%, 2010
Mean Humidity	68%		72%	88%, 2016	50%, 2010
Minimum Pressure	1018 hPa	18:52	1013 hPa	1027 hPa, 2018	1005 hPa, 2013
Maximum Pressure	1025 hPa	03:18	1019 hPa	1031 hPa, 2018	1014 hPa, 2022
Mean Pressure	1021 hPa		1016 hPa	1029 hPa, 2018	1009 hPa, 2013
Mean Wind Speed	4.1 mph (-0.3)		5.8 mph (+1.4)	8.7 mph, 2025	0.7 mph, 2014
Maximum Wind Speed	14.3 mph	14:22	14.8 mph	18.7 mph, 2025	7.4 mph, 2014
Maximum Gust	17.3 mph	14:22	24.0 mph	27.6 mph, 2025	10.2 mph, 2014
Mean Wind Direction	n/a		SW	NNW, 2015	NNE, 2021
Rainfall	32.6 mm		99.2 mm (275%)	32.6 mm, 2026	0.0 mm, 2009
Maximum Hourly Rain	32.0 mm	04:12	2.5 mm	32.0 mm, 2026	1.2 mm, 2012
Maximum 10-min Rain	9.4 mm	03:32	0.9 mm	9.4 mm, 2026	0.5 mm, 2022
Maximum Rain Rate	84 mm/h	03:31	10 mm/h	102 mm/h, 2016	2.2 mm/h, 2012
Minimum Dew Point	14.5 °C	00:11	10.0 °C	15.1 °C, 2016	0.6 °C, 2018
Maximum Dew Point	22.3 °C	11:15	14.9 °C	22.3 °C, 2026	8.4 °C, 2015
Mean Dew Point	18.8 °C		12.5 °C	18.8 °C, 2026	7.3 °C, 2018
Measure	Value	Time	Month cumul.	Record High	Record Low
Night Minimum (21-09)	18.5 °C	03:46	13.8 °C	18.5 °C, 2016	7.7 °C, 2021
Day Maximum (09-21)	33.9 °C	17:04	22.8 °C	33.9 °C, 2026	17.2 °C, 2013
Max 10m Temp Rise	0.7 °C	11:15	0.7 °C	1.5 °C, 2016	0.5 °C, 2010
Max 1hr Temp Rise	2.8 °C	11:15	2.3 °C	3.8 °C, 2022	1.4 °C, 2013
Max 1hr Hum Rise	11%	20:07	10%	17%, 2013	6%, 2010
Max 10m Temp Fall	0.6 °C	20:26	0.8 °C	0.7 °C, 2012	0.3 °C, 2017
Max 1hr Temp Fall	2.2 °C	20:19	2.0 °C	2.7 °C, 2021	1.1 °C, 2019
Max 1hr Hum Fall	16%	12:01	13%	22%, 2022	6%, 2016
Max 10m Wind Speed	9.4 mph	14:13	10.8 mph	14.4 mph, 2025	4.5 mph, 2014
Minimum Feels-like	22.8 °C	02:55	15.2 °C	22.9 °C, 2016	7.7 °C, 2021
Maximum Feels-like	41.1 °C	16:52	26.1 °C	41.1 °C, 2026	18.0 °C, 2013
Mean Feels-like	32.5 °C		20.6 °C	32.5 °C, 2026	15.5 °C, 2015
Air-frost Hrs	0 hrs		0 hrs	0 hrs, 2009	0 hrs, 2009
Minimum PM2.5	n/a		0.0 µg/m³	0.0 µg/m³, 2009	0.0 µg/m³, 2009
Maximum PM2.5	n/a		0.0 µg/m³	n/a	n/a
Mean PM2.5	n/a		0.0 µg/m³	n/a	n/a
Measure	Value (anomaly)		Month cumul.	Record High	Record Low
Temperature Range	15.4 °C (+6.3)		9.2 °C	15.9 °C, 2020	3.3 °C, 2016
Humidity Range	54%		34%	60%, 2018	6%, 2016
Pressure Range	7 hPa		6 hPa	11 hPa, 2013	2 hPa, 2021

Observation	Detail
Sun Hours	12.4 hrs [82%]
Wet Hours	2 hrs
Cloud Cover	unknown
Events	Severe Thunderstorm
Comments	"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""strong t-s w T rn 3a"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
Observer Absent?	Yes - observations may be unreliable
Pond Temperature	24.5 °C

Notes: Detailed daily weather report for Hampstead, NW3, London on 23rd June 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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