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Colmar Weather in September
September in Colmar averages 21°C (70°F) during the day and 11°C (52°F) at night. Quite a bit of rainfall is typical this month, with around 83 mm (3.3 in) on average. An umbrella is a good idea.
Rainfall in Colmar in September
On average, there are about 12 days with rain during this month, averaging 83 mm (3.3 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Colmar in September
Colmar in September has excellent weather. Days reach 21°C (70°F) and nights cool to 11°C (52°F). Conditions are often most pleasant around the middle of the day. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Colmar in September
With about 163 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Colmar Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
21°C (70°F)
Chance of Rain
40%
Precipitation
83 mm (3.3 in)
Rainy days
12 days
Humidity
79% *
Sunshine
163 hours *
Percentage Sunshine
*
* Data from: Mulhouse, France (36 KM, 22 Miles).
Colmar Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Colmar - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Colmar typically drop from around 23°C (73°F) at the start of September to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 12°C (54°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 records for Colmar in September
Browse day-by-day weather records for Colmar spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Colmar historical weather extremes in September
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Colmar.
- Colmar recorded its highest September temperature of 33°C (91°F) on September 11, 2023.
- The coldest September day was on September 24, 2002, with a maximum of 9°C (48°F).
- The lowest overnight temperature recorded in September was 1°C (34°F) (September 30, 2002).
Best Places in France in September
Find out more about the weather in France and which places have the best travel conditions in this month. See all of France in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Colmar in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Colmar in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Colmar 3-Day Forecast
More climate data for Colmar
Temperature Rainfall Sunshine Humidity
See the full Colmar climate overview or explore weather in France.
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Where to go in September - average daytime high across popular destinations.
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