Daily Report for 13th August 2016

Measure	Value (anomaly)	Time	Month cumul.	Record High	Record Low
Minimum Temperature	15.2 °C (+0.9)	06:37	14.4 °C (-0.1)	18.1 °C (+3.8), 2020	10.8 °C (-3.5), 2019
Maximum Temperature	25.1 °C (+2.5)	16:54	22.5 °C (-0.5)	35.8 °C (+13.2), 2026	18.1 °C (-4.5), 2010
Mean Temperature	19.6 °C (+1.7)		18.2 °C (-0.3)	26.7 °C, 2026	14.3 °C, 2010
Minimum Humidity	41%	17:57	47%	69%, 2015	24%, 2026
Maximum Humidity	80%	07:28	84%	94%, 2018	70%, 2017
Mean Humidity	62%		66%	87%, 2015	48%, 2026
Minimum Pressure	1021 hPa	11:55	1017 hPa	1021 hPa, 2016	1004 hPa, 2014
Maximum Pressure	1024 hPa	09:46	1021 hPa	1025 hPa, 2026	1008 hPa, 2014
Mean Pressure	1008 hPa		1018 hPa	1022 hPa, 2026	1005 hPa, 2014
Mean Wind Speed	7.0 mph (+3.0)		7.7 mph (+3.7)	7.4 mph, 2023	1.6 mph, 2017
Maximum Wind Speed	17.6 mph	11:34	18.4 mph	20.7 mph, 2025	6.8 mph, 2017
Maximum Gust	29.0 mph	10:44	28.4 mph	29.0 mph, 2016	10.0 mph, 2009
Mean Wind Direction	n/a		W	NNW, 2017	NNE, 2020
Rainfall	0.0 mm		12.5 mm (55%)	10.4 mm, 2015	0.0 mm, 2012
Maximum Hourly Rain	n/a		0.3 mm	5.0 mm, 2015	0.2 mm, 2018
Maximum 10-min Rain	n/a		0.1 mm	2.5 mm, 2010	0.2 mm, 2018
Maximum Rain Rate	n/a		0.6 mm/h	30 mm/h, 2010	0.6 mm/h, 2020
Minimum Dew Point	8.8 °C	21:35	8.5 °C	16.9 °C, 2020	4.5 °C, 2017
Maximum Dew Point	14.8 °C	12:47	14.1 °C	20.8 °C, 2020	9.6 °C, 2017
Mean Dew Point	11.7 °C		11.4 °C	18.5 °C, 2020	6.9 °C, 2017
Measure	Value	Time	Month cumul.	Record High	Record Low
Night Minimum (21-09)	15.2 °C	06:37	14.6 °C	20.1 °C, 2020	10.8 °C, 2019
Day Maximum (09-21)	25.1 °C	16:54	22.5 °C	35.8 °C, 2026	18.1 °C, 2010
Max 10m Temp Rise	0.6 °C	14:17	0.6 °C	1.0 °C, 2009	0.4 °C, 2015
Max 1hr Temp Rise	2.0 °C	08:28	1.8 °C	4.1 °C, 2026	1.3 °C, 2009
Max 1hr Hum Rise	5%	22:02	8%	18%, 2019	5%, 2016
Max 10m Temp Fall	0.4 °C	17:09	0.5 °C	1.2 °C, 2009	0.3 °C, 2015
Max 1hr Temp Fall	1.9 °C	21:00	1.6 °C	4.3 °C, 2026	1.0 °C, 2015
Max 1hr Hum Fall	10%	14:53	10%	15%, 2013	6%, 2021
Max 10m Wind Speed	12.2 mph	10:53	14.0 mph	12.5 mph, 2023	4.4 mph, 2017
Minimum Feels-like	17.1 °C	06:00	16.0 °C	23.3 °C, 2020	11.6 °C, 2019
Maximum Feels-like	27.6 °C	16:34	24.7 °C	38.9 °C, 2026	20.4 °C, 2013
Mean Feels-like	21.8 °C		20.4 °C	29.7 °C, 2026	16.4 °C, 2013
Air-frost Hrs	0 hrs		0 hrs	0 hrs, 2009	0 hrs, 2009
Minimum PM2.5	n/a		0.0 µg/m³	4.8 µg/m³, 2026	0.0 µg/m³, 2009
Maximum PM2.5	n/a		0.0 µg/m³	11.6 µg/m³, 2026	11.6 µg/m³, 2026
Mean PM2.5	n/a		0.0 µg/m³	6.8 µg/m³, 2026	6.8 µg/m³, 2026
Measure	Value (anomaly)		Month cumul.	Record High	Record Low
Temperature Range	9.9 °C (+1.6)		8.1 °C	19.4 °C, 2026	4.2 °C, 2015
Humidity Range	39%		37%	58%, 2026	23%, 2025
Pressure Range	3 hPa		4 hPa	12 hPa, 2015	1 hPa, 2010

Observation	Detail
Sun Hours	6 hrs [45%]
Wet Hours	0 hrs
Cloud Cover	am: Partly Cloudy transitioned to Mostly Cloudy pm: Partly Cloudy
Events	None
Comments	-
Observer Absent?	Yes - observations may be unreliable
Pond Temperature	0.0 °C

Notes: Detailed daily weather report for Hampstead, NW3, London on 13th August 2016. 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 Report for 13th August 2016

Daily Graph of Conditions

Wind direction

Air pollution

Wind rose

Webcam Summary of Cloud Conditions