| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -6.4° | -14.7° | 70.8mm | 13.5 | 3 |
| February | -4.2° | -13.9° | 72.8mm | 13 | 4 |
| March | 1° | -8.2° | 77.8mm | 12.1 | 6 |
| April | 8.7° | -0.3° | 95.5mm | 12.8 | 35 |
| May | 17.6° | 6.5° | 81.2mm | 12 | 68 |
| June | 22.3° | 11.6° | 109.8mm | 13.9 | 72 |
| July | 25.3° | 14.9° | 111mm | 12.9 | 74 |
| August | 24.3° | 14° | 110.4mm | 11.7 | 77 |
| September | 19.8° | 9.5° | 102.8mm | 10.5 | 78 |
| October | 11.4° | 3.4° | 115.4mm | 12.5 | 47 |
| November | 4.2° | -2.6° | 87.9mm | 13.3 | 16 |
| December | -2.8° | -9.7° | 102.9mm | 14.7 | 1 |
January in Les Rivières averages a daily high of -6.4°C with nights around -14.7°C. Expect roughly 13.5 wet days totalling 70.8mm. A hard month to visit for comfort alone.
February in Les Rivières averages a daily high of -4.2°C with nights around -13.9°C. Expect roughly 13 wet days totalling 72.8mm. A hard month to visit for comfort alone.
March in Les Rivières averages a daily high of 1°C with nights around -8.2°C. Expect roughly 12.1 wet days totalling 77.8mm. A hard month to visit for comfort alone.
April in Les Rivières averages a daily high of 8.7°C with nights around -0.3°C. Expect roughly 12.8 wet days totalling 95.5mm. Demanding conditions — pack for it and plan indoor options.
May in Les Rivières averages a daily high of 17.6°C with nights around 6.5°C. Expect roughly 12 wet days totalling 81.2mm. Generally workable, with some weather to plan around.
June in Les Rivières averages a daily high of 22.3°C with nights around 11.6°C. Expect roughly 13.9 wet days totalling 109.8mm. Generally workable, with some weather to plan around.
July in Les Rivières averages a daily high of 25.3°C with nights around 14.9°C. Expect roughly 12.9 wet days totalling 111mm. Generally workable, with some weather to plan around.
August in Les Rivières averages a daily high of 24.3°C with nights around 14°C. Expect roughly 11.7 wet days totalling 110.4mm. Comfortable conditions for being outdoors all day.
September in Les Rivières averages a daily high of 19.8°C with nights around 9.5°C. Expect roughly 10.5 wet days totalling 102.8mm. Comfortable conditions for being outdoors all day.
October in Les Rivières averages a daily high of 11.4°C with nights around 3.4°C. Expect roughly 12.5 wet days totalling 115.4mm. Demanding conditions — pack for it and plan indoor options.
November in Les Rivières averages a daily high of 4.2°C with nights around -2.6°C. Expect roughly 13.3 wet days totalling 87.9mm. A hard month to visit for comfort alone.
December in Les Rivières averages a daily high of -2.8°C with nights around -9.7°C. Expect roughly 14.7 wet days totalling 102.9mm. 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. Les Rivières peaks at 78.
Based on 30 years of records, June–September scores highest for comfort in Les Rivières, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 25.3°C.
October is the wettest, averaging 115.4mm of rain across roughly 12.5 wet days.
January is the coolest month, with average daily highs around -6.4°C.