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Monthly Data Tables - Rainfall / mm

Total Max hour Max 10-min Max rate Mean rate Wet hours Wet % of day

Monthly

Total Count Lowest Highest

Start year

1871 1910 1950 1980 2000 2009 2020

Monthly Total Rainfall

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

103.2
(175%)

96.6
(215%)

28.3
(73%)

2.3
(5%)

11.4
(25%)

101.2
(215%)

0.0
(0%)

343.0
(56%)

88.5
(150%)

49.0
(109%)

3.8
(10%)

25.7
(61%)

49.6
(108%)

28.4
(60%)

62.2
(135%)

25.0
(46%)

50.3
(101%)

71.7
(110%)

62.7
(94%)

60.4
(106%)

577.3
(94%)

54.0
(92%)

87.1
(194%)

73.6
(189%)

67.8
(161%)

74.1
(161%)

10.4
(22%)

98.4
(214%)

29.0
(54%)

120.1
(240%)

64.6
(99%)

73.1
(109%)

43.0
(75%)

795.2
(129%)

52.8
(89%)

3.9
(9%)

83.1
(213%)

49.2
(117%)

25.2
(55%)

29.9
(64%)

70.6
(153%)

45.2
(84%)

48.5
(97%)

94.2
(145%)

70.1
(105%)

74.4
(131%)

647.1
(105%)

16.8
(28%)

52.4
(116%)

27.4
(70%)

18.0
(43%)

28.4
(62%)

27.8
(59%)

2.3
(5%)

71.5
(132%)

55.2
(110%)

72.3
(111%)

135.4
(202%)

58.1
(102%)

565.6
(92%)

97.7
(166%)

40.1
(89%)

21.5
(55%)

2.8
(7%)

73.8
(160%)

65.4
(139%)

123.3
(268%)

34.5
(64%)

40.5
(81%)

96.8
(149%)

8.0
(12%)

72.0
(126%)

676.4
(110%)

45.1
(76%)

90.5
(201%)

39.4
(101%)

28.3
(67%)

5.5
(12%)

45.1
(96%)

36.4
(79%)

51.7
(96%)

23.4
(47%)

165.8
(255%)

32.4
(48%)

76.8
(135%)

640.4
(104%)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Lowest

16.8
(28%)

3.9
(9%)

3.8
(10%)

2.3
(5%)

5.5
(12%)

10.4
(22%)

0.0
(0%)

25.0
(46%)

23.4
(47%)

64.6
(99%)

8.0
(12%)

43.0
(75%)

343.0
(56%)

Highest

103.2
(175%)

96.6
(215%)

83.1
(213%)

67.8
(161%)

74.1
(161%)

101.2
(215%)

123.3
(268%)

71.5
(132%)

120.1
(240%)

165.8
(255%)

135.4
(202%)

76.8
(135%)

795.2
(129%)

Mean

65.4
(111%)

59.9
(133%)

39.6
(102%)

27.7
(66%)

38.3
(83%)

44.0
(94%)

56.2
(122%)

42.8
(79%)

56.3
(113%)

94.2
(145%)

63.6
(95%)

64.1
(112%)

606.4
(98%)

Rainfall: monthly totals for all months since 2020 in London, NW3. Data for Rainfall begins in 1871.

Monthly Count Rainfall

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

80

121

171

159

148

159

172

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Lowest

7

5

4

4

2

5

0

4

8

12

11

13

80

Highest

21

22

23

17

18

15

18

13

16

24

20

20

172

Mean

14.9

16.7

13.6

8.6

10.1

10

10.1

9.3

11.2

17.7

15.3

16.8

144.3

Rainfall: count of days with a non-zero value for all months since 2020 in London, NW3. Data for Rainfall begins in 1871.

Monthly Lowest Rainfall

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

0.0

0.0

0.0

0.0

0.0

0.0

0.0

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Lowest

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

Highest

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

Mean

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

Rainfall: lowest daily value each month for all months since 2020 in London, NW3. Data for Rainfall begins in 1871.

Monthly Highest Rainfall

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

33.6

35.8

27.3

21.4

35.8

42.0

34.0

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Year

Lowest

7.0

2.9

2.0

1.0

3.8

4.6

0.0

9.8

5.3

13.4

3.8

11.5

21.4

Highest

31.0

18.2

12.5

20.4

27.8

33.6

42.0

35.8

27.3

34.0

27.4

20.6

42.0

Mean

16.8

12.6

9.3

10.2

11.5

16.3

17.3

18.0

16.9

22.0

15.0

15.9

32.8

Rainfall: highest daily value each month for all months since 2020 in London, NW3. Data for Rainfall begins in 1871.

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).