Historical Ranked Periods - Mean Feels-like / °C · 5-day mean
Start year
Top 5-day mean
#
Value
Date
1
33.9
23–27 Jun 2026
2
31.7
8–12 Aug 2020
3
30.2
7–11 Jul 2026
4
30.2
22–26 Jul 2019
5
29.9
6–10 Sep 2023
6
29.7
23–27 Jul 2018
7
29.4
27 Jun – 1 Jul 2025
8
29.3
18–22 Jul 2021
9
28.9
17–21 Jun 2017
10
28.5
16–20 Jul 2022
11
28.2
11–15 Aug 2022
12
28.0
3–7 Aug 2018
13
27.9
23–27 May 2026
14
27.3
18–22 Jun 2026
15
27.3
9–13 Jul 2022
16
27.2
29 Jul – 2 Aug 2024
17
27.1
5–9 Jul 2018
18
27.0
30 Jul – 3 Aug 2022
19
27.0
16–20 Jul 2016
20
27.0
11–15 Aug 2025
21
26.9
18–22 Jun 2025
22
26.9
10–14 Aug 2024
23
26.9
10–14 Jul 2025
24
26.9
26–30 Jul 2026
25
26.7
24–28 Aug 2019
Bottom 5-day mean
#
Value
Date
1
-8.0
26 Feb – 2 Mar 2018
2
-5.5
8–12 Feb 2021
3
-5.0
29 Nov – 3 Dec 2010
4
-4.7
5–9 Jan 2010
5
-4.4
17–21 Dec 2010
6
-4.0
23–27 Mar 2013
7
-3.9
31 Jan – 4 Feb 2012
8
-3.8
16–20 Jan 2013
9
-3.6
11–15 Dec 2022
10
-3.6
2–6 Jan 2026
11
-3.4
15–19 Jan 2024
12
-3.0
16–20 Dec 2009
13
-2.9
10–14 Mar 2013
14
-2.9
21–25 Feb 2013
15
-2.7
7–11 Feb 2012
16
-2.7
22–26 Dec 2010
17
-2.5
17–21 Mar 2018
18
-2.4
8–12 Dec 2017
19
-2.3
5–9 Dec 2010
20
-2.2
30 Jan – 3 Feb 2019
21
-2.1
2–6 Feb 2015
22
-2.0
8–12 Feb 2010
23
-2.0
16–20 Jan 2023
24
-1.9
24–28 Nov 2010
25
-1.9
31 Mar – 4 Apr 2013
Mean Feels-like 5-day extremes: highest and lowest period means.
There are 6206 valid 5-day periods from 2009 to present in London, NW3 (complete windows only, hiding overlapping windows). Data for Mean Feels-like begins in 2009.
Mean feels-like temperature (wind chill or humidex) for the day (midnight to midnight, local time).