Historical Ranked Monthly Data - Rainfall / mm
| Top monthly total |
| Rank |
Value |
Date |
| 1 |
165.8 |
Oct 2020 |
| 2 |
144.2 |
Nov 2009 |
| 3 |
141.5 |
Jan 2014 |
| 4 |
135.4 |
Nov 2022 |
| 5 |
123.3 |
Jul 2021 |
| 6 |
120.1 |
Sep 2024 |
| 7 |
118.3 |
Aug 2014 |
| 8 |
117.7 |
Jun 2012 |
| 9 |
106.1 |
Nov 2014 |
| 10 |
103.2 |
Jan 2026 |
| 11 |
101.4 |
Dec 2012 |
| 12 |
101.2 |
Jun 2026 |
| 13 |
100.4 |
Apr 2012 |
| 14 |
99.3 |
Feb 2010 |
| 15 |
98.5 |
Aug 2010 |
| 16 |
98.4 |
Jul 2024 |
| 17 |
97.7 |
Jan 2021 |
| 18 |
97.3 |
Dec 2017 |
| 19 |
96.8 |
Oct 2021 |
| 20 |
96.6 |
Feb 2026 |
| 21 |
94.2 |
Oct 2014 |
| 22 |
94.2 |
Oct 2023 |
| 23 |
92.6 |
Dec 2019 |
| 24 |
92.0 |
Oct 2013 |
| 25 |
91.8 |
Jun 2016 |
| Bottom monthly total |
| Rank |
Value |
Date |
| 1 |
0.0 |
Jul 2026 |
| 2 |
0.8 |
Jun 2018 |
| 3 |
1.8 |
Apr 2011 |
| 4 |
2.3 |
Apr 2026 |
| 5 |
2.3 |
Jul 2022 |
| 6 |
2.8 |
Apr 2021 |
| 7 |
2.9 |
Apr 2017 |
| 8 |
3.8 |
Mar 2025 |
| 9 |
3.9 |
Feb 2023 |
| 10 |
5.5 |
May 2020 |
| 11 |
8.0 |
Nov 2021 |
| 12 |
9.4 |
Jun 2015 |
| 13 |
10.4 |
Jun 2024 |
| 14 |
10.5 |
Dec 2016 |
| 15 |
11.1 |
Mar 2011 |
| 16 |
11.4 |
May 2026 |
| 17 |
12.4 |
Apr 2019 |
| 18 |
15.1 |
Jul 2010 |
| 19 |
15.5 |
Oct 2011 |
| 20 |
15.6 |
Jun 2013 |
| 21 |
16.8 |
Jan 2022 |
| 22 |
18.0 |
Apr 2022 |
| 23 |
18.1 |
Aug 2016 |
| 24 |
19.4 |
Oct 2017 |
| 25 |
19.5 |
Apr 2015 |
Rainfall monthly extremes: highest and lowest monthly totals.
There are 211 valid months for the chosen period from 2009 to present in London, NW3.
| Top monthly count |
| Rank |
Value |
Date |
| 1 |
31 |
May 2026 |
| 2 |
31 |
Mar 2026 |
| 3 |
31 |
Jan 2026 |
| 4 |
31 |
Dec 2025 |
| 5 |
31 |
Oct 2025 |
| 6 |
31 |
Aug 2025 |
| 7 |
31 |
Jul 2025 |
| 8 |
31 |
May 2025 |
| 9 |
31 |
Mar 2025 |
| 10 |
31 |
Jan 2025 |
| 11 |
31 |
Dec 2024 |
| 12 |
31 |
Oct 2024 |
| 13 |
31 |
Aug 2024 |
| 14 |
31 |
Jul 2024 |
| 15 |
31 |
May 2024 |
| 16 |
31 |
Mar 2024 |
| 17 |
31 |
Jan 2024 |
| 18 |
31 |
Dec 2023 |
| 19 |
31 |
Oct 2023 |
| 20 |
31 |
Aug 2023 |
| 21 |
31 |
Jul 2023 |
| 22 |
31 |
May 2023 |
| 23 |
31 |
Mar 2023 |
| 24 |
31 |
Jan 2023 |
| 25 |
31 |
Dec 2022 |
| Bottom monthly count |
| Rank |
Value |
Date |
| 1 |
3 |
Jul 2026 |
| 2 |
28 |
Feb 2009 |
| 3 |
28 |
Feb 2010 |
| 4 |
28 |
Feb 2011 |
| 5 |
28 |
Feb 2013 |
| 6 |
28 |
Feb 2014 |
| 7 |
28 |
Feb 2015 |
| 8 |
28 |
Feb 2017 |
| 9 |
28 |
Feb 2018 |
| 10 |
28 |
Feb 2019 |
| 11 |
28 |
Feb 2021 |
| 12 |
28 |
Feb 2022 |
| 13 |
28 |
Feb 2023 |
| 14 |
28 |
Feb 2025 |
| 15 |
28 |
Feb 2026 |
| 16 |
29 |
Feb 2012 |
| 17 |
29 |
Feb 2016 |
| 18 |
29 |
Feb 2020 |
| 19 |
29 |
Feb 2024 |
| 20 |
30 |
Apr 2009 |
| 21 |
30 |
Jun 2009 |
| 22 |
30 |
Sep 2009 |
| 23 |
30 |
Nov 2009 |
| 24 |
30 |
Apr 2010 |
| 25 |
30 |
Jun 2010 |
Rainfall monthly extremes: most and fewest days with a value.
There are 211 valid months for the chosen period from 2009 to present in London, NW3.
| Top monthly lowest |
| Rank |
Value |
Date |
| 1 |
0.0 |
Jul 2026 |
| 2 |
0.0 |
Jun 2026 |
| 3 |
0.0 |
May 2026 |
| 4 |
0.0 |
Apr 2026 |
| 5 |
0.0 |
Mar 2026 |
| 6 |
0.0 |
Feb 2026 |
| 7 |
0.0 |
Jan 2026 |
| 8 |
0.0 |
Dec 2025 |
| 9 |
0.0 |
Nov 2025 |
| 10 |
0.0 |
Oct 2025 |
| 11 |
0.0 |
Sep 2025 |
| 12 |
0.0 |
Aug 2025 |
| 13 |
0.0 |
Jul 2025 |
| 14 |
0.0 |
Jun 2025 |
| 15 |
0.0 |
May 2025 |
| 16 |
0.0 |
Apr 2025 |
| 17 |
0.0 |
Mar 2025 |
| 18 |
0.0 |
Feb 2025 |
| 19 |
0.0 |
Jan 2025 |
| 20 |
0.0 |
Dec 2024 |
| 21 |
0.0 |
Nov 2024 |
| 22 |
0.0 |
Oct 2024 |
| 23 |
0.0 |
Sep 2024 |
| 24 |
0.0 |
Aug 2024 |
| 25 |
0.0 |
Jul 2024 |
| Bottom monthly lowest |
| Rank |
Value |
Date |
| 1 |
0.0 |
Jan 2009 |
| 2 |
0.0 |
Feb 2009 |
| 3 |
0.0 |
Mar 2009 |
| 4 |
0.0 |
Apr 2009 |
| 5 |
0.0 |
May 2009 |
| 6 |
0.0 |
Jun 2009 |
| 7 |
0.0 |
Jul 2009 |
| 8 |
0.0 |
Aug 2009 |
| 9 |
0.0 |
Sep 2009 |
| 10 |
0.0 |
Oct 2009 |
| 11 |
0.0 |
Nov 2009 |
| 12 |
0.0 |
Dec 2009 |
| 13 |
0.0 |
Jan 2010 |
| 14 |
0.0 |
Feb 2010 |
| 15 |
0.0 |
Mar 2010 |
| 16 |
0.0 |
Apr 2010 |
| 17 |
0.0 |
May 2010 |
| 18 |
0.0 |
Jun 2010 |
| 19 |
0.0 |
Jul 2010 |
| 20 |
0.0 |
Aug 2010 |
| 21 |
0.0 |
Sep 2010 |
| 22 |
0.0 |
Oct 2010 |
| 23 |
0.0 |
Nov 2010 |
| 24 |
0.0 |
Dec 2010 |
| 25 |
0.0 |
Jan 2011 |
Rainfall monthly extremes: highest and lowest monthly minima.
There are 211 valid months for the chosen period from 2009 to present in London, NW3.
| Top monthly highest |
| Rank |
Value |
Date |
| 1 |
42.0 |
Jul 2021 |
| 2 |
40.7 |
Oct 2014 |
| 3 |
39.1 |
Aug 2017 |
| 4 |
38.5 |
Aug 2014 |
| 5 |
35.8 |
Jul 2025 |
| 6 |
35.8 |
Aug 2022 |
| 7 |
35.8 |
Jun 2009 |
| 8 |
35.6 |
May 2017 |
| 9 |
34.3 |
Aug 2009 |
| 10 |
34.0 |
Oct 2020 |
| 11 |
33.6 |
Jun 2026 |
| 12 |
32.0 |
Sep 2019 |
| 13 |
32.0 |
Sep 2013 |
| 14 |
31.9 |
Jul 2015 |
| 15 |
31.7 |
May 2010 |
| 16 |
31.0 |
Jan 2025 |
| 17 |
30.4 |
Jun 2016 |
| 18 |
30.2 |
Oct 2022 |
| 19 |
29.8 |
Nov 2014 |
| 20 |
29.7 |
Jul 2017 |
| 21 |
29.3 |
Sep 2014 |
| 22 |
27.8 |
May 2025 |
| 23 |
27.4 |
Nov 2022 |
| 24 |
27.3 |
Sep 2024 |
| 25 |
27.0 |
Feb 2010 |
| Bottom monthly highest |
| Rank |
Value |
Date |
| 1 |
0.0 |
Jul 2026 |
| 2 |
0.2 |
Jun 2018 |
| 3 |
0.7 |
Jul 2022 |
| 4 |
1.0 |
Apr 2026 |
| 5 |
1.1 |
Apr 2017 |
| 6 |
1.4 |
Apr 2011 |
| 7 |
1.9 |
Apr 2021 |
| 8 |
2.0 |
Mar 2025 |
| 9 |
2.6 |
Apr 2019 |
| 10 |
2.9 |
Feb 2023 |
| 11 |
3.6 |
Oct 2011 |
| 12 |
3.8 |
Jul 2010 |
| 13 |
3.8 |
Nov 2021 |
| 14 |
3.8 |
May 2026 |
| 15 |
4.1 |
Jun 2015 |
| 16 |
4.2 |
Jun 2013 |
| 17 |
4.4 |
Mar 2011 |
| 18 |
4.6 |
Apr 2010 |
| 19 |
4.6 |
May 2022 |
| 20 |
4.6 |
Jun 2024 |
| 21 |
4.9 |
Mar 2010 |
| 22 |
4.9 |
Nov 2010 |
| 23 |
5.2 |
Apr 2015 |
| 24 |
5.3 |
May 2020 |
| 25 |
5.3 |
Sep 2020 |
Rainfall monthly extremes: highest and lowest monthly maxima.
There are 211 valid months for the chosen period from 2009 to present in London, NW3.