Charlottetown in September
In September, Charlottetown averages 19°C (67°F) during the day and 13°C (56°F) at night, with frequent rain — about 16 days of the month see precipitation (92 mm total).
ShoulderConditions are comfortable for sightseeing without being sweltering. Expect daily rain or showers, often in heavy bursts.
September offers comfortable temperatures in Charlottetown, with some rain to plan around.
How September compares to the rest of the year in Charlottetown
September is one of the warmest months in Charlottetown (3rd of 12) and one of the driest months (12th of 12). Daytime temperature runs 9°C above the annual average (10°C). September runs 4°C cooler than August (23°C) and cools 6°C in October (13°C).
September sunrise & sunset in Charlottetown
Times shown for Charlottetown local time (America/Halifax), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Charlottetown — September
Golden-hour and blue-hour windows for the 15th of September, in Charlottetown's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Charlottetown 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 Charlottetown's popularity.
Crowds & pricing — September in Charlottetown
Charlottetown 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 Charlottetown
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.
Charlottetown in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | -1°C / 29°F | -9°C / 16°F | 111 mm | 19 | — |
| February | -2°C / 28°F | -10°C / 14°F | 102 mm | 17 | — |
| March | 1°C / 33°F | -6°C / 20°F | 93 mm | 18 | — |
| April | 7°C / 44°F | 0°C / 32°F | 87 mm | 18 | — |
| May | 14°C / 56°F | 6°C / 42°F | 73 mm | 16 | — |
| June | 19°C / 66°F | 12°C / 53°F | 107 mm | 18 | — |
| July | 23°C / 74°F | 17°C / 62°F | 81 mm | 17 | — |
| August | 23°C / 74°F | 17°C / 63°F | 103 mm | 18 | — |
| September | 19°C / 67°F | 13°C / 56°F | 92 mm | 16 | — |
| October | 13°C / 56°F | 8°C / 46°F | 108 mm | 17 | — |
| November | 7°C / 44°F | 1°C / 34°F | 134 mm | 18 | — |
| December | 2°C / 35°F | -4°C / 25°F | 121 mm | 18 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Charlottetown in September →
Frequently asked questions
How hot is Charlottetown in September?
In September, Charlottetown averages a high of 19°C (67°F) and a low of 13°C (56°F) — generally mild and pleasant.
Does it rain a lot in Charlottetown in September?
September is quite rainy in Charlottetown, with about 16 rainy days on average.
Is September a good time to visit Charlottetown?
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 Charlottetown 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 Charlottetown for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.