Monthly Data Tables - Wet Hours / hrs
Start year
Monthly Highest Wet Hours
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
7
4
2
0.7
2
1
0
0
5
5
6
7
10
Highest
19
23
18
18
14
21
12
20
15
21
16
16
23
Mean
11
12
10
8
9
9
7
10
10
11
11
11
16
Wet Hours: highest daily value each month for all months since 2009 in London, NW3. Data for Wet Hours begins in 2009.
Figures in brackets refer to departure from recent average conditions (the anomaly for the current month is unadjusted for the month's degree of completeness).
Hours with measurable rainfall during the day (midnight to midnight, local time). Estimated heuristically from rain observations.