Historical Ranked Daily Data for May - Sun Hours / hrs
Weather Variable:
| Highest | ||
| Rank | Value | Date |
| 1 | 15 | 31 May 2020 |
| 2 | 15 | 30 May 2020 |
| 3 | 15 | 29 May 2020 |
| 4 | 15 | 27 May 2012 |
| 5 | 15 | 27 May 2026 |
| 6 | 15 | 26 May 2017 |
| 7 | 15 | 26 May 2012 |
| 8 | 15 | 23 May 2010 |
| 9 | 14 | 25 May 2026 |
| 10 | 14 | 24 May 2026 |
| 11 | 14 | 22 May 2010 |
| 12 | 14 | 24 May 2009 |
| 13 | 14 | 26 May 2026 |
| 14 | 14 | 20 May 2020 |
| 15 | 14 | 20 May 2018 |
| 16 | 14 | 22 May 2026 |
| 17 | 14 | 19 May 2018 |
| 18 | 14 | 25 May 2017 |
| 19 | 14 | 14 May 2019 |
| 20 | 14 | 13 May 2025 |
| 21 | 14 | 10 May 2024 |
| 22 | 14 | 24 May 2023 |
| 23 | 14 | 25 May 2020 |
| 24 | 14 | 13 May 2019 |
| 25 | 14 | 22 May 2018 |
| Lowest | ||
| Rank | Value | Date |
| 1 | 0 | 13 May 2009 |
| 2 | 0 | 27 May 2009 |
| 3 | 0 | 02 May 2010 |
| 4 | 0 | 08 May 2010 |
| 5 | 0 | 02 May 2012 |
| 6 | 0 | 03 May 2012 |
| 7 | 0 | 04 May 2012 |
| 8 | 0 | 06 May 2012 |
| 9 | 0 | 09 May 2012 |
| 10 | 0 | 10 May 2012 |
| 11 | 0 | 20 May 2012 |
| 12 | 0 | 28 May 2013 |
| 13 | 0 | 29 May 2013 |
| 14 | 0 | 01 May 2014 |
| 15 | 0 | 26 May 2014 |
| 16 | 0 | 27 May 2014 |
| 17 | 0 | 28 May 2014 |
| 18 | 0 | 30 May 2014 |
| 19 | 0 | 14 May 2015 |
| 20 | 0 | 10 May 2016 |
| 21 | 0 | 25 May 2016 |
| 22 | 0 | 30 May 2016 |
| 23 | 0 | 31 May 2016 |
| 24 | 0 | 03 May 2017 |
| 25 | 0 | 04 May 2017 |
Ranked daily data from 2009 to present for London, NW3. For Sun Hours, there are 558 valid values in May, and 515 values > 0.