Records since 2009 (ties show the most recent year) · day max 09-21, night min 21-09 · normals 1991-2020; rain normal is the average total and the share of years with ≥0.2 mm on this date · more records
NW3 Weather is a meteorological observation site located near Hampstead, in North London, UK.
The site was established with an automatic personal weather station
in July 2010 and runs continuously, with updates at least every 60s.
This weather station has been recording data for
17 years and 280 days
Chilly, dry Saturday with a little sunshine and the murkiest air on record
Cool for early November: a high of 9.9 °C and a low of 3.9 °C, with the mean 2.2 °C below the 1991–2020 average. The night minimum was the second lowest for 07 November since 2009 (only 2010 was colder, at 2.7 °C), and the daily mean the third lowest.
Dry, with no rain at all, making three dry days in a row. Maxima have now been below normal on every day of November so far.
3.2 hours of sunshine (110% of normal), the sunniest day of the month so far after three sunless days from the 4th to the 6th.
Air quality was exceptionally poor: mean PM2.5 of 78.2 µg/m³ (peak 109.9) was the highest since the sensor's records began 128 days ago, well above the previous high of 54.5 µg/m³ set the day before.
Mean temperature 8.9 °C, 0.3 °C below the 1991–2020 average. Days have been cool (mean max 10.7 °C, 1.2 °C below normal and the third lowest for 01–07 November since 2009, after 2012 and 2016), while nights have been slightly mild (+0.4 °C).
Just 1.6 mm of rain, 10% of normal and the third driest start since 2009 (2024 had only 0.1 mm). No day has reached 1 mm yet, equalling 2024.
Only 6.8 hours of sunshine, a third of normal and the second dullest start on station record, behind 2024 (2.5 hours). Four days were sunless; the best was 3.2 hours on the 7th.
The warmest day was 11.6 °C (2nd and 3rd) and the coldest night 3.9 °C (7th); no air frost yet.
2026 so far: the warmest and sunniest year to date on station record
Mean temperature 14.3 °C through 07 November, 2.1 °C above the 1991–2020 average and well clear of the previous warmest for the same span since 2009 (2022, 13.5 °C). Mean maxima (18.7 °C) and minima (10.0 °C) are both records too. May, July and August were each the warmest on station record.
1797.7 hours of sunshine (122% of normal), beating 2025's 1691.9 hours; July, August and October were all the sunniest on station record.
473.8 mm of rain (93% of normal), the fifth driest since 2009, despite January, February and June each being the second wettest. July was completely dry, within a record 51-day dry spell (28 June to 17 August).
A record 77 days reached 25 °C (previous 48 in 2018) and a record 24 hot days (previous 13 in 2018), peaking at 35.8 °C.
Fog has been logged on at least 6 days, already the most of any year since 2009. Ten air frosts (lowest −4.0 °C on 06 January) and snow on at least 2 days.
October 2026: sunniest October on station record, with a wet second half and record early warmth
153.6 hours of sunshine (130% of normal) beat 2018's 153.0 for the sunniest October since 2009. 04 Oct (9.3 h) and 17 Oct (7.6 h) set date records.
Mean 12.9°C, 1.2°C above normal and 7th-warmest of 18 station Octobers. Highs ran 1.8°C above. 04–06 Oct each set a date record, peaking at 22.5°C on the 5th, and 15 Oct set date records for both max (21.2°C) and min (13.9°C). The coldest night was only 6.0°C (21st), the mildest monthly minimum since 2009, with no air frost.
Rain 89.6 mm (138% of normal), 7th-wettest since 2009. A 9-day wet spell (16–24 Oct) ended with 23.8 mm on the 24th, a date record. 07 Oct (7.4 mm) also set one.
Fog was noted at 09 on the 30th. Gusts reached 42.6 mph on the 25th, the 2nd-highest October gust since 2009.
Mean pressure (1019.3 hPa) was the 2nd-highest for October on station record.
