The honest answer to when you should fly Guangzhou to Toronto is mostly about weather and demand at the far end. On three years of daily observations at the arrival airport, Jun-Sep gives the most comfortable combination of temperature and rainfall in Toronto.
Averages below come from three full years of daily readings at Toronto’s main airport, not from a seasonal generalisation. The warmest month is July (average high 29°C), the coolest is January (average low -8°C), and the wettest is April (103 mm).
| Month | Avg high | Avg low | Rainfall | Wet days | Guangzhou high |
|---|---|---|---|---|---|
| January | -2°C | -8°C | 70 mm | 13 | 21°C |
| February | 0°C | -8°C | 46 mm | 10 | 22°C |
| March | 7°C | -3°C | 65 mm | 11 | 24°C |
| April | 13°C | 3°C | 103 mm | 13 | 29°C |
| May | 19°C | 9°C | 103 mm | 14 | 29°C |
| June good | 26°C | 15°C | 68 mm | 12 | 31°C |
| July good | 29°C | 18°C | 77 mm | 10 | 32°C |
| August good | 26°C | 16°C | 88 mm | 12 | 32°C |
| September good | 23°C | 13°C | 46 mm | 7 | 32°C |
| October | 16°C | 7°C | 62 mm | 10 | 29°C |
| November | 8°C | 1°C | 45 mm | 9 | 25°C |
| December | 2°C | -4°C | 87 mm | 14 | 21°C |
Climate data: Open-Meteo reanalysis archive.
Toronto runs 12 hours behind Guangzhou. Travelling west is generally the easier direction, and you gain usable hours on the day you fly out.
We publish observed fares for this route when we have them, and say nothing when we do not — there is no estimate on this page. What holds regardless of the route:
Midweek departures are consistently cheaper than Friday and Sunday on most routes, because that is where demand sits rather than because of any pricing trick. Where we have observed fares for Guangzhou–Toronto, the weekday breakdown appears further down this page; where we do not, we leave it out rather than estimate it.
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