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Last Full Update: 02 Aug 2026, 08:45 BSTUpdated: 02 Aug 26 08:45
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Historical Ranked Annual Data - Maximum 10-min Rain / mm

TotalMax hourMax 10-minMax rateMean rateWet hoursWet % of day
Annual
MeanLowestHighestRangeCount ≥Count <
Threshold
0.21.03.05.010.020.0
Start year
2009

Top annual range
#
Value
Date
1
12.8
2023
2
10.6
2025
3
10.4
2021
4
9.9
2022
5
9.4
2026
6
8.7
2014
7
8.0
2012
8
7.7
2009
9
7.2
2011
10
6.8
2019
11
6.8
2016
12
6.6
2020
13
6.5
2024
14
6.5
2013
15
5.7
2017
16
4.9
2018
17
4.8
2015
18
3.8
2010
5
9.4
Current year
2
10.6
Last year
Bottom annual range
#
Value
Date
1
3.8
2010
2
4.8
2015
3
4.9
2018
4
5.7
2017
5
6.5
2013
6
6.5
2024
7
6.6
2020
8
6.8
2016
9
6.8
2019
10
7.2
2011
11
7.7
2009
12
8.0
2012
13
8.7
2014
14
9.4
2026
15
9.9
2022
16
10.4
2021
17
10.6
2025
18
12.8
2023
14
9.4
Current year
17
10.6
Last year

Maximum 10-min Rain annual extremes: highest and lowest annual ranges (daily max − min).
There are 18 valid years for the chosen period from 2009 to present in London, NW3. Data for Maximum 10-min Rain begins in 2009.

Largest amount of rain that fell in any 10-minute period during the day (midnight to midnight, local time).

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