| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -3° | -12.6° | 76.3mm | 14.3 | 1 |
| February | -2° | -12.2° | 61.2mm | 12.8 | 4 |
| March | 2.1° | -7.5° | 69mm | 14.9 | 1 |
| April | 8.3° | -1.2° | 74.2mm | 15.3 | 28 |
| May | 15.7° | 4.5° | 85.7mm | 15.2 | 56 |
| June | 21.4° | 10.3° | 85.3mm | 13.4 | 73 |
| July | 25.1° | 14.3° | 90.1mm | 14.8 | 70 |
| August | 24.7° | 13.5° | 79.3mm | 13.5 | 73 |
| September | 20.4° | 9.1° | 112.8mm | 13.3 | 73 |
| October | 13.2° | 3.4° | 103.9mm | 13.5 | 51 |
| November | 6.3° | -1.9° | 98.2mm | 14.5 | 21 |
| December | 0.2° | -8.1° | 97mm | 16.6 | 0 |
January in Moncton averages a daily high of -3°C with nights around -12.6°C. Expect roughly 14.3 wet days totalling 76.3mm. A hard month to visit for comfort alone.
February in Moncton averages a daily high of -2°C with nights around -12.2°C. Expect roughly 12.8 wet days totalling 61.2mm. A hard month to visit for comfort alone.
March in Moncton averages a daily high of 2.1°C with nights around -7.5°C. Expect roughly 14.9 wet days totalling 69mm. A hard month to visit for comfort alone.
April in Moncton averages a daily high of 8.3°C with nights around -1.2°C. Expect roughly 15.3 wet days totalling 74.2mm. A hard month to visit for comfort alone.
May in Moncton averages a daily high of 15.7°C with nights around 4.5°C. Expect roughly 15.2 wet days totalling 85.7mm. Generally workable, with some weather to plan around.
June in Moncton averages a daily high of 21.4°C with nights around 10.3°C. Expect roughly 13.4 wet days totalling 85.3mm. Generally workable, with some weather to plan around.
July in Moncton averages a daily high of 25.1°C with nights around 14.3°C. Expect roughly 14.8 wet days totalling 90.1mm. Generally workable, with some weather to plan around.
August in Moncton averages a daily high of 24.7°C with nights around 13.5°C. Expect roughly 13.5 wet days totalling 79.3mm. Generally workable, with some weather to plan around.
September in Moncton averages a daily high of 20.4°C with nights around 9.1°C. Expect roughly 13.3 wet days totalling 112.8mm. Generally workable, with some weather to plan around.
October in Moncton averages a daily high of 13.2°C with nights around 3.4°C. Expect roughly 13.5 wet days totalling 103.9mm. Demanding conditions — pack for it and plan indoor options.
November in Moncton averages a daily high of 6.3°C with nights around -1.9°C. Expect roughly 14.5 wet days totalling 98.2mm. A hard month to visit for comfort alone.
December in Moncton averages a daily high of 0.2°C with nights around -8.1°C. Expect roughly 16.6 wet days totalling 97mm. 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. Moncton peaks at 73.
Based on 30 years of records, June–September scores highest for comfort in Moncton, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 25.1°C.
September is the wettest, averaging 112.8mm of rain across roughly 13.3 wet days.
January is the coolest month, with average daily highs around -3°C.