Historical Ranked Monthly Data for September - Maximum Hourly Rain / mm
Weather Variable:
Top monthly-mean
Rank
Value
Date
1
5.9
Sep 2014
2
4.3
Sep 2024
3
3.8
Sep 2009
4
3.4
Sep 2011
5
3.4
Sep 2010
6
3.2
Sep 2023
7
2.9
Sep 2016
8
2.7
Sep 2021
9
2.6
Sep 2019
Bottom monthly-mean
Rank
Value
Date
1
1.1
Sep 2020
2
1.7
Sep 2013
3
1.7
Sep 2025
4
1.7
Sep 2017
5
2.1
Sep 2018
6
2.2
Sep 2022
7
2.5
Sep 2012
8
2.6
Sep 2015
9
2.6
Sep 2019
Maximum Hourly Rain monthly extremes: monthly average For Maximum Hourly Rain, there are 17 valid months for the chosen period from 2009 to present for Sep in London, nw3.
Top monthly-lowest
Rank
Value
Date
1
1.1
Sep 2014
2
0.8
Sep 2010
3
0.7
Sep 2018
4
0.7
Sep 2016
5
0.6
Sep 2012
6
0.5
Sep 2009
7
0.3
Sep 2021
8
0.3
Sep 2015
9
0.3
Sep 2013
Bottom monthly-lowest
Rank
Value
Date
1
0.0
Sep 2022
2
0.0
Sep 2025
3
0.2
Sep 2017
4
0.2
Sep 2019
5
0.2
Sep 2020
6
0.2
Sep 2023
7
0.2
Sep 2024
8
0.3
Sep 2011
9
0.3
Sep 2013
Maximum Hourly Rain monthly extremes: lowest daily value in each month For Maximum Hourly Rain, there are 17 valid months for the chosen period from 2009 to present for Sep in London, nw3.
Top monthly-highest
Rank
Value
Date
1
18.7
Sep 2014
2
18.4
Sep 2011
3
16.5
Sep 2024
4
11.4
Sep 2016
5
10.3
Sep 2019
6
9.2
Sep 2023
7
9.0
Sep 2013
8
7.4
Sep 2009
9
7.0
Sep 2015
Bottom monthly-highest
Rank
Value
Date
1
3.1
Sep 2020
2
4.8
Sep 2025
3
5.0
Sep 2022
4
5.5
Sep 2017
5
5.5
Sep 2018
6
6.4
Sep 2012
7
6.8
Sep 2010
8
6.9
Sep 2021
9
7.0
Sep 2015
Maximum Hourly Rain monthly extremes: highest daily value in each month For Maximum Hourly Rain, there are 17 valid months for the chosen period from 2009 to present for Sep in London, nw3.
