The month in detail
What to expect in September
Autumn in La Rochelle is often underrated: 70°F, golden light and declining crowds. An interesting window. Rain risk remains low (24% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if July (8.5/10) remains theoretically better.
September ranks 4 out of 12 months in La Rochelle. Compared to August: −4°F daytime, −1.2h of sun per day.
This month's conditions
What it's like in September
UV index
5 · moderate
protect during midday hours
Feels like
comfortable
13°
Sea
20°C
cool, invigorating
Daylight
12.3h of daylight
Air quality
good
AQI 28
Compare
Is September the right month?
The best month in La Rochelle is July (8.5/10), 0.7 pt higher than September.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · La Rochelle
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · La Rochelle
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach trip.
Country · France
🗣️LanguageFrench
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘExpensive · 4/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthJuly · 73°F
❄️Coolest monthJanuary · 50°F
🌧️Rainiest month ⓘNovember · 42%
🏖️ Beach trip
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
🛂VisaSchengen · 90 days
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is La Rochelle ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
FranceTemperate oceanic climate with a 8.5 → 1.1 gap between best and worst month. 10 years of ERA5 data to choose by project.
46.16°N · 1.15°W
Questions
Frequently asked questions
What is the best time to visit La Rochelle?
July is the best month with 73°F highs, 63°F lows, 9.6h of sunshine and 20.0% rainy days. The months of July & August offer comparable conditions.
How many hours of sunshine does La Rochelle get in July?
La Rochelle averages 9.6 sunshine hours per day in July. It is the sunniest month with a climate score of 7.9/10.
What is the rainiest month in La Rochelle?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in La Rochelle in July?
In July, overnight lows reach 63°F, while afternoon highs average 73°F.
Is La Rochelle good in winter?
In winter (December-February), La Rochelle scores 2.1/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 7.9/10.
When should you avoid La Rochelle?
January is the most difficult month to visit La Rochelle, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in La Rochelle in September?
In September, the sea averages 68°F in La Rochelle: cool, invigorating. Swimming is possible but brisk; sensitive swimmers may prefer a wetsuit.
Do you need sun protection in La Rochelle in September?
The average UV index reaches 5 in September in La Rochelle (moderate), with about 12.3h of daylight. Protect during midday hours.