Daily Data Tables - Maximum Hourly Rain / mm
Start year
No data for Maximum Hourly Rain in the selected year; defaulted to 2009 (earliest available).
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Lowest
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.5
0.3
0.3
0.3
Highest
7.0
3.0
6.0
2.8
4.4
33.3
5.5
9.9
7.4
4.1
6.8
4.4
Mean
2.4
1.5
2.0
1.2
1.7
4.9
1.7
2.2
3.8
1.5
2.6
1.6
Cumul
2.4
2.0
2.0
1.8
1.8
2.3
2.2
2.2
2.2
2.1
2.2
2.1
Maximum Hourly Rain in London, NW3, for every available day of 2009 along with monthly summary: lowest, highest, mean, and the cumulative value for the year to the month's end. 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).