The month in detail
What to expect in September
Autumn in Alsace is often underrated: 21°C, golden light and declining crowds. An interesting window. Expect rain on 27% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if July (8.2/10) remains theoretically better.
September ranks 4 out of 12 months in Alsace. Compared to August: −5°C daytime, −1.0h of sun per day.
This month's conditions
What it's like in September
UV index
4 · moderate
protect during midday hours
Feels like
comfortable
12°
Daylight
12.3h of daylight
Air quality
good
AQI 26
Compare
Is September the right month?
The best month in Alsace is July (8.2/10), 0.5 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 · Alsace
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Alsace
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 city break.
Country · France
🗣️LanguageFrench
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘExpensive · 4/5
🌡️ Climate
🌍Climate typeTemperate
📈Climate trend ⓘStable
🔥Hottest monthJuly · 26°C
❄️Coolest monthJanuary · 6°C
🌧️Rainiest month ⓘMay · 35%
🏛️ City break
📅Tourist peak seasonJune → August
☔Indoor sights ⓘYear-round
🚇Public transportGood
🛂VisaSchengen · 90 days
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is Alsace ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
FranceTemperate climate with a 8.2 → 1.0 gap between best and worst month. 10 years of ERA5 data to choose by project.
48.32°N · 7.44°E
Questions
Frequently asked questions
What is the best time to visit Alsace?
July is the best month with 26.0°C highs, 16.0°C lows, 8.1h of sunshine and 34.0% rainy days. The months of July & August offer comparable conditions.
How many hours of sunshine does Alsace get in July?
Alsace averages 8.1 sunshine hours per day in July. It is the sunniest month with a climate score of 7.7/10.
What is the rainiest month in Alsace?
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 Alsace in July?
In July, overnight lows reach 16.0°C, while afternoon highs average 26.0°C.
Is Alsace good in winter?
In winter (December-February), Alsace scores 2.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 7.7/10.
When should you avoid Alsace?
January is the most difficult month to visit Alsace, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Do you need sun protection in Alsace in September?
The average UV index reaches 4 in September in Alsace (moderate), with about 12.3h of daylight. Protect during midday hours.