September · Canada
Best time to visit St. John's in September Weather, crowds & prices
Weather in St. John's in September
Average temperature 15°C, 77 mm of rain, about 8 days with 6+ hours of sunshine and 88% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
7.0/10
Ranked #3 of 12 months
- Avg temp
- 15°C
- Rainfall
- 77 mm
- Humidity
- 88%
- Days with 6h+ sun
- 8
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in St. John's scores 7.0/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 15°C, 77 mm of rain, and roughly 8 days with 6+ hours of sunshine this month.
St John's colourful row houses and harbour sit at the edge of the North Atlantic in Newfoundland.
September in St. John's — reliably good (3rd best month)
September averages 15°C (58°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 77 mm, so plan one flexible day in three; you still get about 8 days with 6+ hours of sunshine and 12.3 hours of daylight.
It scores 7/10 here, 3rd of 12 months, against 8/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in St. John's in September?
- In September, St. John's averages 15°C, 77 mm of rain, and about 8 days with 6+ hours of sunshine. Its climate-comfort score is 7.0/10.
- Is September a good time to visit St. John's?
- September earns a 7.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in St. John's in September?
- Expect about 77 mm of rain in September. Average humidity is 88% and there are about 8 days with 6+ hours of sunshine.
Curated in St. John's
Tickets & experiences
Things to do in St. John's
St. John's, Canada. Live activities and tours from GetYourGuide, matched to this destination.