Charlottetown Weather in September
September in Charlottetown sees daytime temperatures around 20°C (68°F) and lows of 12°C (54°F) at night. With around 102 mm (4 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Charlottetown in September
You can expect rain on around 12 days based on historical patterns, with 102 mm (4 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Charlottetown in September
Daytime highs in Charlottetown in September reach 20°C (68°F), with nights around 12°C (54°F). Experience the summer season in September. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Charlottetown in September
The month experiences a moderate amount of sunlight, with 183 hours of sunshine. This provides a nice balance between sunshine and clouds.For Charlottetown itself, June, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Charlottetown's climate page.
Charlottetown Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
20°C (68°F)
Chance of Rain
41%
Precipitation
102 mm (4 in)
Rainy days
12 days
Sunshine
183 hours
Percentage Sunshine
48%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Charlottetown typically drop from around 20°C (68°F) at the start of September to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 13°C (55°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Charlottetown in September
Browse day-by-day weather records for Charlottetown spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Charlottetown historical weather extremes in September
The extremes listed below come from historical weather data collected in Charlottetown from 1976 through 2025.
- On September 2, 2010, temperatures climbed to 31°C (88°F), marking the warmest September day on record.
- On September 29, 2000, Charlottetown saw its coldest September day with temperatures maxing out at 8°C (46°F).
- Nighttime temperatures dropped to -1°C (30°F) on September 25, 2018, marking the coldest September night on record.
Best Places in Canada in September
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
perfect weather
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tolerable
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What to Wear in Charlottetown in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Charlottetown in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Charlottetown's climate page.
See the full Charlottetown climate overview or explore weather in Canada.
