Daily Data Tables - Maximum Hourly Rain / mm
Start year
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Lowest
0.0
0.0
0.2
0.2
0.2
0.2
---
---
Highest
5.6
5.0
7.2
1.0
2.2
32.0
---
---
Mean
1.7
1.7
1.8
0.6
0.8
4.2
---
---
Cumul
1.7
1.7
1.7
1.7
1.6
2.0
2.0
2.0
Maximum Hourly Rain in London, NW3, for every available day of 2026 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.
Values for recent days are subject to quality control and may be adjusted at any time.
Largest amount of rain that fell in any single hour during the day (midnight to midnight, local time).