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Last Full Update: 18 Sep 2026, 01:05 BSTUpdated: 18 Sep 26 01:05
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Daily Report for 25th April 2026

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MeasureValue (anomaly)TimeMonth cumul.Record HighRecord Low
Minimum Temperature2.8 °C (-3.7)04:196.3 °C (+0.5)11.3 °C (+4.8), 20151.4 °C (-5.1), 2017
Maximum Temperature21.9 °C (+6.6)17:1316.7 °C (+2.7)22.4 °C (+7.1), 201310.7 °C (-4.6), 2023
Mean Temperature12.1 °C (+1.4)11.6 °C (+1.6)16.4 °C, 20136.0 °C, 2017
Minimum Humidity17%16:1943%82%, 201417%, 2026
Maximum Humidity93%07:1486%97%, 201467%, 2017
Mean Humidity56%66%93%, 201448%, 2017
Minimum Pressure1022 hPa16:261018 hPa1027 hPa, 2021982 hPa, 2012
Maximum Pressure1024 hPa00:011024 hPa1031 hPa, 2021998 hPa, 2012
Mean Pressure1023 hPa1021 hPa1029 hPa, 2021990 hPa, 2012
Mean Wind Speed1.3 mph (-3.6)5.6 mph (+0.7)8.4 mph, 20181.3 mph, 2026
Maximum Wind Speed6.1 mph18:4815.1 mph25.6 mph, 20126.1 mph, 2026
Maximum Gust9.2 mph12:3923.5 mph45.3 mph, 20129.2 mph, 2026
Mean Wind Directionn/aSSWNNW, 2017NNE, 2011
Rainfall0.0 mm2.3 mm (7%)14.2 mm, 20120.0 mm, 2011
Maximum Hourly Rainn/a0.1 mm4.3 mm, 20120.4 mm, 2018
Maximum 10-min Rainn/a0.1 mm2.2 mm, 20220.2 mm, 2018
Maximum Rain Raten/a0.7 mm/h40 mm/h, 20121.0 mm/h, 2024
Minimum Dew Point-4.9 °C16:191.5 °C6.9 °C, 2014-6.7 °C, 2017
Maximum Dew Point5.5 °C08:517.9 °C12.5 °C, 2014-1.2 °C, 2017
Mean Dew Point1.1 °C4.9 °C9.5 °C, 2013-4.4 °C, 2017
MeasureValueTimeMonth cumul.Record HighRecord Low
Night Minimum (21-09)2.8 °C04:196.7 °C11.3 °C, 20151.4 °C, 2017
Day Maximum (09-21)21.9 °C17:1316.7 °C22.4 °C, 201310.7 °C, 2023
Max 10m Temp Rise1.1 °C11:000.8 °C1.1 °C, 20260.2 °C, 2014
Max 1hr Temp Rise4.0 °C11:102.7 °C4.0 °C, 20260.8 °C, 2014
Max 1hr Hum Rise15%21:0812%19%, 20224%, 2014
Max 10m Temp Fall0.9 °C21:430.7 °C1.6 °C, 20220.4 °C, 2015
Max 1hr Temp Fall4.1 °C21:492.2 °C4.1 °C, 20261.5 °C, 2009
Max 1hr Hum Fall26%11:2614%26%, 20262%, 2014
Max 10m Wind Speed3.8 mph16:2211.2 mph13.9 mph, 20183.8 mph, 2026
Minimum Feels-like1.7 °C05:404.1 °C12.5 °C, 2015-2.9 °C, 2017
Maximum Feels-like21.9 °C17:1017.2 °C23.5 °C, 201310.7 °C, 2023
Mean Feels-like12.0 °C11.2 °C17.5 °C, 20133.6 °C, 2017
Air-frost Hrs0 hrs0 hrs0 hrs, 20090 hrs, 2009
Minimum PM2.5n/a0.0 µg/m30.0 µg/m3, 20090.0 µg/m3, 2009
Maximum PM2.5n/a0.0 µg/m3n/an/a
Mean PM2.5n/a0.0 µg/m3n/an/a
MeasureValue (anomaly)Month cumul.Record HighRecord Low
Temperature Range19.1 °C (+10.3)10.4 °C19.1 °C, 20264.5 °C, 2014
Humidity Range76%43%76%, 202615%, 2014
Pressure Range3 hPa6 hPa16 hPa, 20122 hPa, 2025
ObservationDetail
Sun Hours11 hrs [84%]
Wet Hours0 hrs
Cloud Coverunknown
EventsDense Fog
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Observer Absent?Yes - observations may be unreliable
Pond Temperature14.2 °C
Notes
Detailed daily weather report for Hampstead, NW3, London on 25th April 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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