September · France
Best time to visit Saint-Malo in September Weather, crowds & prices
Weather in Saint-Malo in September
Average temperature 18°C, 64 mm of rain, about 8 days with 6+ hours of sunshine and 77% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
4.8/10
Ranked #6 of 12 months
- Avg temp
- 18°C
- Rainfall
- 64 mm
- Humidity
- 77%
- Days with 6h+ sun
- 8
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Saint-Malo scores 4.8/10 for beach and coastal travel - an above-average month (#6 of 12). Expect around 18°C, 64 mm of rain, and roughly 8 days with 6+ hours of sunshine this month.
Saint-Malo's walled corsair city faces the Channel, with tides, ramparts and ferry links to England.
September in Saint-Malo: expect compromises
Temperatures hover around 18°C (64°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 64 mm of rain this month — a flexible day or two helps — with about 8 days with 6+ hours of sunshine and 12.3 hours of daylight to work around it.
That is 4.8/10 on the same scale — 6th of 12 months, versus 8/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, July is materially better in Saint-Malo — 3.2 points higher on the same scale.
Frequently asked
- What is the weather like in Saint-Malo in September?
- In September, Saint-Malo averages 18°C, 64 mm of rain, and about 8 days with 6+ hours of sunshine. Its climate-comfort score is 4.8/10.
- Is September a good time to visit Saint-Malo?
- September earns a 4.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Saint-Malo in September?
- Expect about 64 mm of rain in September. Average humidity is 77% and there are about 8 days with 6+ hours of sunshine.
Curated in Saint-Malo
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Saint-Malo, France. Live activities and tours from GetYourGuide, matched to this destination.