United States vs United States · 1991–2020
Francisco or
Chelsea?
Francisco peaks in September (84), Chelsea in September (84). Below, every month side by side — the better comfort score of the pair is marked, which is a statement about climate only.
| Month | Francisco day | Francisco rain | Chelsea day | Chelsea rain | Daylight | Better score |
|---|---|---|---|---|---|---|
| January | -0.8°C | 62 mm | -0.8°C | 62 mm | 9 h 24 / 9 h 24 | level · 5 |
| February | 0.6°C | 48 mm | 0.6°C | 48 mm | 10 h 30 / 10 h 30 | level · 5 |
| March | 7.3°C | 64 mm | 7.3°C | 64 mm | 11 h 48 / 11 h 48 | level · 5 |
| April | 14.6°C | 81 mm | 14.6°C | 81 mm | 13 h 18 / 13 h 18 | level · 34 |
| May | 21°C | 107 mm | 21°C | 107 mm | 14 h 34 / 14 h 34 | level · 61 |
| June | 26.3°C | 101 mm | 26.3°C | 101 mm | 15 h 15 / 15 h 15 | level · 76 |
| July | 28.5°C | 83 mm | 28.5°C | 83 mm | 14 h 59 / 14 h 59 | level · 72 |
| August | 27.2°C | 94 mm | 27.2°C | 94 mm | 13 h 53 / 13 h 53 | level · 76 |
| September | 23.9°C | 71 mm | 23.9°C | 71 mm | 12 h 26 / 12 h 26 | level · 84 |
| October | 16.2°C | 82 mm | 16.2°C | 82 mm | 10 h 59 / 10 h 59 | level · 43 |
| November | 8.8°C | 74 mm | 8.8°C | 74 mm | 9 h 43 / 9 h 43 | level · 11 |
| December | 2.3°C | 56 mm | 2.3°C | 56 mm | 9 h 06 / 9 h 06 | level · 5 |
Comfort scores compare climate and nothing else — not cost, crowds, flights or what there is to do when you arrive. Two places can also read stations of very different quality: check the distance in the caption above before treating a one-point gap as meaningful.