Historical Ranked Daily Data - Maximum Hourly Rain / mm
Start year
Highest
#
Value
Date
1
33.3
27 Jun 2009
2
32.0
23 Jun 2026
3
26.4
12 May 2025
4
25.5
25 Jul 2021
5
23.3
10 Aug 2014
6
23.1
17 Aug 2022
7
20.0
12 Jul 2021
8
18.7
20 Sep 2014
9
18.5
02 Nov 2022
10
18.4
06 Sep 2011
11
16.5
23 Sep 2024
12
16.0
30 Jul 2017
13
14.9
06 Nov 2022
14
14.4
15 Jul 2024
15
14.1
05 Aug 2012
16
13.9
12 Jun 2023
17
13.4
13 Jul 2018
18
13.1
01 May 2010
19
12.5
26 Sep 2024
20
11.5
23 Jun 2016
21
11.5
08 Nov 2014
22
11.4
16 Sep 2016
23
11.2
09 Aug 2017
24
11.2
24 Jul 2015
25
11.2
02 Oct 2010
Lowest
#
Value
Date
1
0.0
07 Feb 2020
2
0.0
14 Feb 2020
3
0.0
05 Jul 2020
4
0.0
01 Jan 2021
5
0.0
23 Jan 2021
6
0.0
25 Jan 2021
7
0.0
23 Feb 2021
8
0.0
25 May 2021
9
0.0
29 May 2021
10
0.0
13 Jul 2021
11
0.0
14 Jul 2021
12
0.0
15 Jul 2021
13
0.0
16 Jul 2021
14
0.0
21 Jul 2021
15
0.0
07 Jan 2022
16
0.0
12 Jan 2022
17
0.0
17 Jan 2022
18
0.0
20 Jan 2022
19
0.0
28 Jun 2022
20
0.0
15 Sep 2022
21
0.0
12 Dec 2022
22
0.0
13 Dec 2022
23
0.0
17 Dec 2022
24
0.0
24 Feb 2024
25
0.0
26 Feb 2024
Ranked daily data from 2009 to present for London, NW3. For Maximum Hourly Rain, there are 2584 valid values. Data for Maximum Hourly Rain begins in 2009.
Largest amount of rain that fell in any single hour during the day (midnight to midnight, local time).