Quebec City in September
In September, Quebec City averages 20°C (67°F) during the day and 11°C (51°F) at night, with frequent rain — about 16 days of the month see precipitation (111 mm total).
ShoulderConditions are comfortable for sightseeing without being sweltering. Expect daily rain or showers, often in heavy bursts.
September offers comfortable temperatures in Quebec City, with some rain to plan around.
How September compares to the rest of the year in Quebec City
September is in the middle of the year for warmth in Quebec City (4th of 12) and one of the driest months (12th of 12). Daytime temperature runs 10°C above the annual average (10°C). September runs 4°C cooler than August (24°C) and cools 8°C in October (12°C).
September sunrise & sunset in Quebec City
Times shown for Quebec City local time (America/Toronto), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Quebec City — September
Golden-hour and blue-hour windows for the 15th of September, in Quebec City's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Quebec City in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Quebec City's popularity.
Crowds & pricing — September in Quebec City
Quebec City is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: comfortable tourism weather
Sun & mosquito risk — September in Quebec City
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Quebec City in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | -6°C / 20°F | -15°C / 5°F | 85 mm | 19 | — |
| February | -5°C / 23°F | -14°C / 6°F | 86 mm | 18 | — |
| March | 0°C / 33°F | -8°C / 17°F | 85 mm | 17 | — |
| April | 8°C / 46°F | -2°C / 29°F | 111 mm | 16 | — |
| May | 18°C / 64°F | 7°C / 44°F | 94 mm | 17 | — |
| June | 22°C / 72°F | 13°C / 55°F | 145 mm | 19 | — |
| July | 25°C / 76°F | 16°C / 60°F | 142 mm | 20 | — |
| August | 24°C / 74°F | 15°C / 59°F | 130 mm | 20 | — |
| September | 20°C / 67°F | 11°C / 51°F | 111 mm | 16 | — |
| October | 12°C / 54°F | 5°C / 40°F | 145 mm | 18 | — |
| November | 3°C / 38°F | -4°C / 26°F | 96 mm | 17 | — |
| December | -3°C / 27°F | -10°C / 13°F | 105 mm | 17 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Quebec City in September →
Frequently asked questions
How hot is Quebec City in September?
In September, Quebec City averages a high of 20°C (67°F) and a low of 11°C (51°F) — generally mild and pleasant.
Does it rain a lot in Quebec City in September?
September is quite rainy in Quebec City, with about 16 rainy days on average.
Is September a good time to visit Quebec City?
September is mild and pleasant but on the rainy side. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Quebec City in September?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full September packing list for Quebec City for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.