| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 4° | -5.7° | 98.8mm | 10.8 | 16 |
| February | 5.4° | -5.5° | 79.5mm | 7.9 | 26 |
| March | 10.3° | -1.3° | 116.8mm | 9.1 | 46 |
| April | 17.1° | 3.9° | 113.2mm | 11.1 | 69 |
| May | 22.6° | 9.3° | 105.3mm | 12.8 | 74 |
| June | 27.2° | 14.3° | 127.7mm | 11.4 | 76 |
| July | 29.6° | 17.3° | 92.8mm | 8.8 | 72 |
| August | 28.9° | 16.8° | 86.6mm | 8.2 | 76 |
| September | 25.1° | 13.1° | 128.2mm | 8.4 | 83 |
| October | 18.6° | 6.8° | 121.2mm | 9.4 | 77 |
| November | 12.3° | 1° | 113.9mm | 9.8 | 54 |
| December | 6.6° | -2.9° | 106.7mm | 10.7 | 28 |
January in Stamford averages a daily high of 4°C with nights around -5.7°C. Expect roughly 10.8 wet days totalling 98.8mm. A hard month to visit for comfort alone.
February in Stamford averages a daily high of 5.4°C with nights around -5.5°C. Expect roughly 7.9 wet days totalling 79.5mm. A hard month to visit for comfort alone.
March in Stamford averages a daily high of 10.3°C with nights around -1.3°C. Expect roughly 9.1 wet days totalling 116.8mm. Demanding conditions — pack for it and plan indoor options.
April in Stamford averages a daily high of 17.1°C with nights around 3.9°C. Expect roughly 11.1 wet days totalling 113.2mm. Generally workable, with some weather to plan around.
May in Stamford averages a daily high of 22.6°C with nights around 9.3°C. Expect roughly 12.8 wet days totalling 105.3mm. Generally workable, with some weather to plan around.
June in Stamford averages a daily high of 27.2°C with nights around 14.3°C. Expect roughly 11.4 wet days totalling 127.7mm. Comfortable conditions for being outdoors all day.
July in Stamford averages a daily high of 29.6°C with nights around 17.3°C. Expect roughly 8.8 wet days totalling 92.8mm. Generally workable, with some weather to plan around.
August in Stamford averages a daily high of 28.9°C with nights around 16.8°C. Expect roughly 8.2 wet days totalling 86.6mm. Comfortable conditions for being outdoors all day.
September in Stamford averages a daily high of 25.1°C with nights around 13.1°C. Expect roughly 8.4 wet days totalling 128.2mm. Comfortable conditions for being outdoors all day.
October in Stamford averages a daily high of 18.6°C with nights around 6.8°C. Expect roughly 9.4 wet days totalling 121.2mm. Comfortable conditions for being outdoors all day.
November in Stamford averages a daily high of 12.3°C with nights around 1°C. Expect roughly 9.8 wet days totalling 113.9mm. Demanding conditions — pack for it and plan indoor options.
December in Stamford averages a daily high of 6.6°C with nights around -2.9°C. Expect roughly 10.7 wet days totalling 106.7mm. A hard month to visit for comfort alone.
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. Stamford peaks at 83.
Based on 30 years of records, August–October scores highest for comfort in Stamford, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 29.6°C.
September is the wettest, averaging 128.2mm of rain across roughly 8.4 wet days.
January is the coolest month, with average daily highs around 4°C.