Monthly Data Tables - Maximum Rain Rate / mm/h
Start year
Monthly Highest Maximum Rain Rate
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Year
Lowest
14
3.6
3.0
1.0
14
14
13
11
24
3.3
7
8
65
Highest
120
162
53
54
100
120
126
119
126
120
114
126
162
Mean
42
37
26
27
50
67
57
72
62
59
42
36
108
Maximum Rain Rate: highest daily value each month for all months since 2009 in London, NW3. Data for Maximum Rain Rate begins in 2009.
Highest instantaneous rain rate (1-min avg) recorded during the day (midnight to midnight, local time).