| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 4.9° | -7.5° | 17.4mm | 4.9 | 28 |
| February | 7.7° | -5.9° | 28.4mm | 5.4 | 38 |
| March | 13.9° | -0.3° | 55.1mm | 8.2 | 61 |
| April | 20° | 5.6° | 84.6mm | 10 | 80 |
| May | 24.8° | 11.6° | 140.9mm | 13 | 74 |
| June | 30.6° | 17.4° | 139.8mm | 10.4 | 65 |
| July | 33° | 20° | 104mm | 9 | 58 |
| August | 32.3° | 18.7° | 108.5mm | 10.2 | 58 |
| September | 28.3° | 13.7° | 82.9mm | 8.1 | 79 |
| October | 21.3° | 6.5° | 64.6mm | 7.9 | 84 |
| November | 13.3° | -0.1° | 40.5mm | 6 | 63 |
| December | 6.7° | -5.6° | 29.6mm | 5.2 | 36 |
January in Manhattan averages a daily high of 4.9°C with nights around -7.5°C. Expect roughly 4.9 wet days totalling 17.4mm. A hard month to visit for comfort alone.
February in Manhattan averages a daily high of 7.7°C with nights around -5.9°C. Expect roughly 5.4 wet days totalling 28.4mm. Demanding conditions — pack for it and plan indoor options.
March in Manhattan averages a daily high of 13.9°C with nights around -0.3°C. Expect roughly 8.2 wet days totalling 55.1mm. Generally workable, with some weather to plan around.
April in Manhattan averages a daily high of 20°C with nights around 5.6°C. Expect roughly 10 wet days totalling 84.6mm. Comfortable conditions for being outdoors all day.
May in Manhattan averages a daily high of 24.8°C with nights around 11.6°C. Expect roughly 13 wet days totalling 140.9mm. Generally workable, with some weather to plan around.
June in Manhattan averages a daily high of 30.6°C with nights around 17.4°C. Expect roughly 10.4 wet days totalling 139.8mm. Generally workable, with some weather to plan around.
July in Manhattan averages a daily high of 33°C with nights around 20°C. Expect roughly 9 wet days totalling 104mm. Generally workable, with some weather to plan around.
August in Manhattan averages a daily high of 32.3°C with nights around 18.7°C. Expect roughly 10.2 wet days totalling 108.5mm. Generally workable, with some weather to plan around.
September in Manhattan averages a daily high of 28.3°C with nights around 13.7°C. Expect roughly 8.1 wet days totalling 82.9mm. Comfortable conditions for being outdoors all day.
October in Manhattan averages a daily high of 21.3°C with nights around 6.5°C. Expect roughly 7.9 wet days totalling 64.6mm. Comfortable conditions for being outdoors all day.
November in Manhattan averages a daily high of 13.3°C with nights around -0.1°C. Expect roughly 6 wet days totalling 40.5mm. Generally workable, with some weather to plan around.
December in Manhattan averages a daily high of 6.7°C with nights around -5.6°C. Expect roughly 5.2 wet days totalling 29.6mm. Demanding conditions — pack for it and plan indoor options.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Manhattan peaks at 84.
Based on 30 years of records, September–October scores highest for comfort in Manhattan, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 33°C.
May is the wettest, averaging 140.9mm of rain across roughly 13 wet days.
January is the coolest month, with average daily highs around 4.9°C.