| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -0.1° | -6.6° | 60.8mm | 13.7 | 5 |
| February | 0.7° | -6.3° | 57.1mm | 11.9 | 9 |
| March | 5.6° | -1.8° | 53.7mm | 12.2 | 24 |
| April | 11.9° | 3.8° | 77.8mm | 12.8 | 48 |
| May | 19.1° | 10° | 61.2mm | 11.4 | 74 |
| June | 24.4° | 15.3° | 79.4mm | 10.8 | 78 |
| July | 27.3° | 18.2° | 85.4mm | 10.1 | 79 |
| August | 26.4° | 17.8° | 60.9mm | 8.3 | 83 |
| September | 22.6° | 14.1° | 62.9mm | 8.8 | 82 |
| October | 15° | 7.9° | 68.9mm | 12 | 60 |
| November | 8.5° | 2.1° | 60.6mm | 11.9 | 39 |
| December | 2.9° | -2.6° | 66.8mm | 13.6 | 11 |
January in Toronto averages a daily high of -0.1°C with nights around -6.6°C. Expect roughly 13.7 wet days totalling 60.8mm. A hard month to visit for comfort alone.
February in Toronto averages a daily high of 0.7°C with nights around -6.3°C. Expect roughly 11.9 wet days totalling 57.1mm. A hard month to visit for comfort alone.
March in Toronto averages a daily high of 5.6°C with nights around -1.8°C. Expect roughly 12.2 wet days totalling 53.7mm. A hard month to visit for comfort alone.
April in Toronto averages a daily high of 11.9°C with nights around 3.8°C. Expect roughly 12.8 wet days totalling 77.8mm. Demanding conditions — pack for it and plan indoor options.
May in Toronto averages a daily high of 19.1°C with nights around 10°C. Expect roughly 11.4 wet days totalling 61.2mm. Generally workable, with some weather to plan around.
June in Toronto averages a daily high of 24.4°C with nights around 15.3°C. Expect roughly 10.8 wet days totalling 79.4mm. Comfortable conditions for being outdoors all day.
July in Toronto averages a daily high of 27.3°C with nights around 18.2°C. Expect roughly 10.1 wet days totalling 85.4mm. Comfortable conditions for being outdoors all day.
August in Toronto averages a daily high of 26.4°C with nights around 17.8°C. Expect roughly 8.3 wet days totalling 60.9mm. Comfortable conditions for being outdoors all day.
September in Toronto averages a daily high of 22.6°C with nights around 14.1°C. Expect roughly 8.8 wet days totalling 62.9mm. Comfortable conditions for being outdoors all day.
October in Toronto averages a daily high of 15°C with nights around 7.9°C. Expect roughly 12 wet days totalling 68.9mm. Generally workable, with some weather to plan around.
November in Toronto averages a daily high of 8.5°C with nights around 2.1°C. Expect roughly 11.9 wet days totalling 60.6mm. Demanding conditions — pack for it and plan indoor options.
December in Toronto averages a daily high of 2.9°C with nights around -2.6°C. Expect roughly 13.6 wet days totalling 66.8mm. 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. Toronto peaks at 83.
Based on 30 years of records, June–September scores highest for comfort in Toronto, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 27.3°C.
July is the wettest, averaging 85.4mm of rain across roughly 10.1 wet days.
January is the coolest month, with average daily highs around -0.1°C.