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Last Full Update: 02 Aug 2026, 06:15 BSTUpdated: 02 Aug 26 06:15
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Historical Ranked Annual Data - Rainfall / mm

TotalMax hourMax 10-minMax rateMean rateWet hoursWet % of day
Annual
TotalLowestHighestRangeCount ≥Count <
Threshold
0.21.03.05.010.020.0
Start year
18711950198020002009

Top annual total
#
Value
Date
1
940.8
1903*
2
887.7
2002*
3
868.7
2000*
4
843.9
1924*
5
840.4
1927*
6
815.2
2014
7
812.7
1879*
8
795.2
2024
9
786.4
1915*
10
777.2
1960*
11
777.2
2012
12
765.0
1958*
13
764.6
1951*
14
759.3
2001*
15
757.7
1916*
16
757.4
1998*
17
733.1
1878*
18
727.8
1946*
19
714.4
1937*
20
712.4
1880*
21
702.8
1877*
22
701.5
1939*
23
698.4
1979*
24
696.7
1987*
25
692.7
1966*
26
691.1
1894*
27
690.9
1928*
28
688.1
1941*
29
685.0
1926*
30
683.7
1975*
31
680.3
2009
32
676.4
2021
33
675.7
1968*
34
673.3
1982*
35
668.3
2017
36
667.2
1986*
37
663.0
1917*
38
661.0
1891*
39
658.4
1974*
40
654.5
2004*
41
650.9
1992*
42
648.7
1965*
43
648.2
1885*
44
647.1
2023
45
643.6
1918*
46
641.6
2007*
47
641.3
1872*
48
640.4
2020
49
640.3
1888*
50
638.8
1912*
51
638.0
1977*
52
635.7
1923*
53
635.4
1875*
54
635.3
1988*
55
635.0
1993*
56
634.0
1907*
57
631.2
1956*
58
628.6
1886*
59
628.0
1882*
60
626.1
1994*
61
622.1
2013
62
619.5
1881*
63
618.0
2019
64
616.1
1930*
65
615.1
1978*
66
615.0
1984*
67
614.4
1906*
68
611.9
1876*
69
611.0
1914*
70
610.8
1940*
71
610.0
1936*
72
609.2
1970*
73
606.5
1935*
74
606.4
2006*
75
606.2
1999*
76
603.7
1981*
77
601.9
1950*
78
601.8
1967*
79
601.3
1931*
80
599.0
1892*
81
598.1
1954*
82
597.1
1962*
83
597.0
1919*
84
594.0
2010
85
593.7
2015
86
593.1
2008*
87
589.0
1971*
88
586.1
1909*
89
582.5
2018
90
581.8
1889*
91
581.0
1961*
92
580.7
1963*
93
577.3
2025
94
570.3
1925*
95
569.6
2016
96
567.2
1952*
97
565.6
2022
98
565.1
1929*
99
561.3
1980*
100
560.3
1948*
101
558.8
1905*
102
558.0
1883*
103
551.0
1895*
104
548.3
1920*
105
548.3
1908*
106
547.8
1910*
107
547.4
1922*
108
544.4
1932*
109
542.1
1957*
110
538.4
1900*
111
536.1
1964*
112
534.5
1897*
113
532.7
1989*
114
529.5
1902*
115
526.4
1911*
116
525.5
1904*
117
524.6
1983*
118
524.4
1873*
119
524.2
1890*
120
520.5
1985*
121
518.4
1899*
122
516.5
1896*
123
516.0
1995*
124
512.8
1913*
125
510.7
1871*
126
507.0
2011
127
500.0
1991*
128
498.5
1969*
129
494.6
2005*
130
491.2
1942*
131
488.9
1953*
132
488.8
1944*
133
487.7
2003*
134
485.2
1938*
135
482.5
1934*
136
482.0
1893*
137
480.9
1887*
138
477.5
1947*
139
474.2
1874*
140
473.9
1990*
141
472.2
1945*
142
470.0
1955*
143
470.0
1943*
144
466.3
1884*
145
461.1
1901*
146
460.7
1997*
147
458.1
1949*
148
450.3
1898*
149
443.7
1959*
150
440.8
1972*
151
426.1
1973*
152
420.8
1976*
153
408.3
1933*
154
405.9
1996*
155
343.1
1921*
156
343.0
2026
156
343.0
Current year
93
577.3
Last year
Bottom annual total
#
Value
Date
1
343.0
2026
2
343.1
1921*
3
405.9
1996*
4
408.3
1933*
5
420.8
1976*
6
426.1
1973*
7
440.8
1972*
8
443.7
1959*
9
450.3
1898*
10
458.1
1949*
11
460.7
1997*
12
461.1
1901*
13
466.3
1884*
14
470.0
1943*
15
470.0
1955*
16
472.2
1945*
17
473.9
1990*
18
474.2
1874*
19
477.5
1947*
20
480.9
1887*
21
482.0
1893*
22
482.5
1934*
23
485.2
1938*
24
487.7
2003*
25
488.8
1944*
26
488.9
1953*
27
491.2
1942*
28
494.6
2005*
29
498.5
1969*
30
500.0
1991*
31
507.0
2011
32
510.7
1871*
33
512.8
1913*
34
516.0
1995*
35
516.5
1896*
36
518.4
1899*
37
520.5
1985*
38
524.2
1890*
39
524.4
1873*
40
524.6
1983*
41
525.5
1904*
42
526.4
1911*
43
529.5
1902*
44
532.7
1989*
45
534.5
1897*
46
536.1
1964*
47
538.4
1900*
48
542.1
1957*
49
544.4
1932*
50
547.4
1922*
51
547.8
1910*
52
548.3
1908*
53
548.3
1920*
54
551.0
1895*
55
558.0
1883*
56
558.8
1905*
57
560.3
1948*
58
561.3
1980*
59
565.1
1929*
60
565.6
2022
61
567.2
1952*
62
569.6
2016
63
570.3
1925*
64
577.3
2025
65
580.7
1963*
66
581.0
1961*
67
581.8
1889*
68
582.5
2018
69
586.1
1909*
70
589.0
1971*
71
593.1
2008*
72
593.7
2015
73
594.0
2010
74
597.0
1919*
75
597.1
1962*
76
598.1
1954*
77
599.0
1892*
78
601.3
1931*
79
601.8
1967*
80
601.9
1950*
81
603.7
1981*
82
606.2
1999*
83
606.4
2006*
84
606.5
1935*
85
609.2
1970*
86
610.0
1936*
87
610.8
1940*
88
611.0
1914*
89
611.9
1876*
90
614.4
1906*
91
615.0
1984*
92
615.1
1978*
93
616.1
1930*
94
618.0
2019
95
619.5
1881*
96
622.1
2013
97
626.1
1994*
98
628.0
1882*
99
628.6
1886*
100
631.2
1956*
101
634.0
1907*
102
635.0
1993*
103
635.3
1988*
104
635.4
1875*
105
635.7
1923*
106
638.0
1977*
107
638.8
1912*
108
640.3
1888*
109
640.4
2020
110
641.3
1872*
111
641.6
2007*
112
643.6
1918*
113
647.1
2023
114
648.2
1885*
115
648.7
1965*
116
650.9
1992*
117
654.5
2004*
118
658.4
1974*
119
661.0
1891*
120
663.0
1917*
121
667.2
1986*
122
668.3
2017
123
673.3
1982*
124
675.7
1968*
125
676.4
2021
126
680.3
2009
127
683.7
1975*
128
685.0
1926*
129
688.1
1941*
130
690.9
1928*
131
691.1
1894*
132
692.7
1966*
133
696.7
1987*
134
698.4
1979*
135
701.5
1939*
136
702.8
1877*
137
712.4
1880*
138
714.4
1937*
139
727.8
1946*
140
733.1
1878*
141
757.4
1998*
142
757.7
1916*
143
759.3
2001*
144
764.6
1951*
145
765.0
1958*
146
777.2
2012
147
777.2
1960*
148
786.4
1915*
149
795.2
2024
150
812.7
1879*
151
815.2
2014
152
840.4
1927*
153
843.9
1924*
154
868.7
2000*
155
887.7
2002*
156
940.8
1903*
1
343.0
Current year
64
577.3
Last year

Rainfall annual extremes: highest and lowest annual totals.
There are 156 valid years for the chosen period from 1871 to present in London, NW3. Data for Rainfall begins in 1871.

*Data from before 2009 are mostly from the historical site at Whitestone Pond in Hampstead. Where data from that record is missing, other nearby sites were used, including St James Park, Heathrow, and Kew Gardens (pre-1910). Best efforts have been made to adjust for site differences, but uncertainties are somewhat greater for this data. I am grateful to the Met Office for making this data available for free through the MIDAS Open database.

Total rainfall accumulated during the day (midnight to midnight, local time). Tip counts are reset at midnight.

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