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Last Full Update: 24 Sep 2026, 06:25 BSTUpdated: 24 Sep 26 06:25
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Daily Report for 23rd September 2026

Bad date specified. Defaulted to most recent report available.

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MeasureValue (anomaly)TimeMonth cumul.Record HighRecord Low
Minimum Temperature13.3 °C (+2.4)23:5513.7 °C (+1.8)15.2 °C (+4.3), 20243.9 °C (-7.0), 2025
Maximum Temperature23.4 °C (+5.5)14:2622.3 °C (+2.7)23.4 °C (+5.5), 202611.9 °C (-6.0), 2012
Mean Temperature18.9 °C (+4.0)18.0 °C (+2.3)18.9 °C, 202610.1 °C, 2012
Minimum Humidity52%12:5253%78%, 202444%, 2016
Maximum Humidity82%07:3187%98%, 201282%, 2017
Mean Humidity68%72%91%, 201363%, 2016
Minimum Pressure1024 hPa14:591018 hPa1028 hPa, 2025997 hPa, 2012
Maximum Pressure1028 hPa23:071023 hPa1031 hPa, 20181006 hPa, 2020
Mean Pressure1026 hPa1020 hPa1029 hPa, 20251001 hPa, 2020
Mean Wind Speed3.2 mph (-0.7)4.7 mph (+0.8)6.3 mph, 20191.2 mph, 2013
Maximum Wind Speed10.9 mph13:3013.0 mph16.0 mph, 20205.9 mph, 2013
Maximum Gust16.1 mph13:3121.6 mph26.5 mph, 20247.6 mph, 2013
Mean Wind Directionn/aWN, 2022N, 2018
Rainfall0.0 mm26.2 mm (68%)27.3 mm, 20240.0 mm, 2009
Maximum Hourly Rainn/a0.5 mm16.5 mm, 20240.4 mm, 2019
Maximum 10-min Rainn/a0.2 mm6.5 mm, 20240.2 mm, 2019
Maximum Rain Raten/a1.7 mm/h72 mm/h, 20240.4 mm/h, 2019
Minimum Dew Point7.7 °C23:379.8 °C13.5 °C, 20241.0 °C, 2025
Maximum Dew Point15.3 °C10:5715.1 °C16.5 °C, 20248.7 °C, 2018
Mean Dew Point12.8 °C12.5 °C14.9 °C, 20246.0 °C, 2025
MeasureValueTimeMonth cumul.Record HighRecord Low
Night Minimum (21-09)16.5 °C07:1914.4 °C16.5 °C, 20263.9 °C, 2025
Day Maximum (09-21)23.4 °C14:2722.2 °C23.4 °C, 202611.8 °C, 2012
Max 10m Temp Rise0.7 °C10:050.6 °C1.0 °C, 20250.2 °C, 2018
Max 1hr Temp Rise1.8 °C11:482.4 °C3.8 °C, 20161.0 °C, 2018
Max 1hr Hum Rise6%13:488%13%, 20193%, 2022
Max 10m Temp Fall0.4 °C15:200.6 °C0.8 °C, 20250.2 °C, 2015
Max 1hr Temp Fall1.8 °C19:171.8 °C2.3 °C, 20160.7 °C, 2015
Max 1hr Hum Fall14%12:4211%15%, 20152%, 2012
Max 10m Wind Speed7.2 mph13:349.6 mph12.1 mph, 20244.1 mph, 2013
Minimum Feels-like13.7 °C23:5215.4 °C18.4 °C, 20240.9 °C, 2025
Maximum Feels-like27.2 °C14:1625.5 °C27.2 °C, 202614.0 °C, 2012
Mean Feels-like21.6 °C20.7 °C21.6 °C, 202610.4 °C, 2012
Air-frost Hrs0 hrs0 hrs0 hrs, 20090 hrs, 2009
Minimum PM2.50.6 µg/m317:401.3 µg/m30.6 µg/m3, 20260.0 µg/m3, 2009
Maximum PM2.512.9 µg/m311:0514.2 µg/m312.9 µg/m3, 202612.9 µg/m3, 2026
Mean PM2.55.7 µg/m34.4 µg/m35.7 µg/m3, 20265.7 µg/m3, 2026
MeasureValue (anomaly)Month cumul.Record HighRecord Low
Temperature Range10.1 °C (+3.1)8.6 °C13.4 °C, 20253.4 °C, 2024
Humidity Range30%34%47%, 201415%, 2020
Pressure Range4 hPa5 hPa22 hPa, 20122 hPa, 2025
ObservationDetail
Sun Hours6.6 hrs [60%]
Wet Hours0 hrs
Cloud Coverunknown
EventsNone
Commentsblr
Observer Absent?Yes - observations may be unreliable
Pond Temperature18.5 °C
Notes
Detailed daily weather report for Hampstead, NW3, London on 23rd 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.

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