Dates on which the temperature at Hampstead reached 30°C
Jun
Jul
Aug
Sep
2010
27
9/10
2011
27
2012
25
18
2013
13 15/16/17 22
1
2014
18
2015
1
22
2016
18/19/20
24
13
2017
17/18/19/20/21
6
2018
5/6/7/8 15 23 25/26/27
2/3 6/7
2019
29
23/24/25
25/26/27
2020
24/25/26
31
7/8/9/10/11/12
2021
18/19/20
2022
17
11/12 17/18/19
11/12/13/14
» in red: reached 33°C
» in red & bold: reached 35°C
» in red & bold & underlined: reached 37°C
Maximum annual temperature
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
31°C
31°C
30°C
32°C
31°C
34°C
32°C
33°C
33°C
36°C
36°C
31°C
39°C
• The temperature's reached 30°C at least once every year since 2010
• The temperature's reached 33°C ten times since 2010
• The temperature's reached 35°C five times since 2010
• The temperature's reached 37°C once, and 39°C once
• Only once were there six consecutive days above 30°C (and once five)
• Of all the days with 30°C+ temperatures, over half have occurred in July
n.b. Hampstead's usually a bit cooler than other less elevated London weather stations.
e.g. On 25th July 2019 Hampstead reached 36.8°C but Kew and Heathrow reached 37.9°C.
UK's highest recorded temperature(successive records) 36.7°C9th August 1911: Raunds/Epsom/Canterbury 37.1°C3rd August 1990: Cheltenham 38.5°C10th August 2003: Faversham 38.7°C25th July 2019: Cambridge 40.3°C19th July 2022:Coningsby
The UK's five hottest days on record
today, 25/7/2019, 10/8/2003, yesterday, 31/7/2020
UK's highest temperature by country England: 40.3°C (today) (previous record 38.7°C in 2019) Wales: 37.1°C (yesterday) (previous record 35.2°C in 1990) Scotland: 34.8°C (today) (previous record 32.9°C in 2013) Northern Ireland: 31.3°C (21st July 2021)
Number of 'tropical nights' per decade (overnight temperature failed to drop below 20°C somewhere in the UK) 1960s: 5 1970s: 18 1980s: 17 1990s: 33 2000s: 33 2010s: 20 2020s: 12 so far
UK's highest temperature by month Jan: 18.3°C (record from 2003) Feb: 21.2°C (record from 2019) Mar: 25.6°C (record from 1968) Apr: 29.4°C (record from 1949) May: 32.8°C (record from 1944) Jun: 35.6°C (record from 1976) Jul: 40.3°C (record from 2022) Aug: 38.5°C (record from 2003) Sep: 35.6°C (record from 1906) Oct: 29.9°C (record from 2011) Nov: 22.4°C (record from 2015) Dec: 18.7°C (record from 2019)
Atmospheric CO2 1820: 284ppm 1870: 288ppm 1920: 303ppm (up 19ppm in 100 years) 1970: 325ppm 1980: 338ppm 1990: 354ppm 2000: 369ppm 2010: 390ppm 2020: 414ppm (up 24ppm in 10 years)
