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 281 days
Mean 8.7 °C is 0.5 °C below normal, with maxes 1.2 °C below (mean max 10.6 °C, the 3rd-lowest for the period since 2009). Warmest day 11.6 °C (2nd and 3rd); no air frosts yet and a lowest min of 2.5 °C today.
Just 1.6 mm of rain, 9% of the 17.9 mm normal and the 3rd-driest start since 2009; only 3 rain days, none reaching 1 mm.
Sunshine totals 6.8 h, 29% of normal and the 2nd-lowest since 2009, with 5 sunless days.
Mean pressure of 1028.7 hPa is the highest for the period since 2009.
2026 is the warmest and sunniest year to date since the station began in 2009.
Mean temperature 14.3 °C is 2.1 °C above normal and 1st of 18 years (previous best 13.5 °C in 2022), with the warmest mean max (18.7 °C) and mean min (9.9 °C) too.
Summer peaked at 35.8 °C, with 77 summer days (25 °C or more), 24 hot days and a 51-day dry spell from 28 June to 17 August, the longest on record.
Sunshine totals 1,797.7 h, 122% of normal and a new high (previous 1,695.2 h in 2025).
Rain is 473.8 mm, 93% of normal and 14th of 18; the wettest hour gave 32.0 mm. Winter was mild, with only 10 air frosts and a lowest min of -4.0 °C (06 January).
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.
