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Weather in Lyon for September 2025

Your guide to Lyon weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Lyon is cooler than usual, with temperatures averaging 22.7 °C, this is -3.5 °C below the typical seasonal average.

  • The forecast for the next days in Lyon predicts a temperature of 20.6 °C, which is cooler than the historical average.

  • In general, the average temperature in Lyon at the beginning of September is 27.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.1 °C by the end of September.

    • Rain 🌧️

  • Lyon experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 114.5 mm.

    • More

  • Is September a good time to visit Lyon? check out the best time to travel to Lyon page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
5
Dry days
Average rainy days
25
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/13°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
65 %
Avg humidity

Lyon Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Partly cloudy
28°
2
Partly cloudy
26°
3
Sunny
28°
4
Patchy rain possible
28°
5
Partly cloudy
26°
6
Sunny
29°
7
Sunny
30°
8
Sunny
27°
9
Light rain shower
24°
10
Patchy rain possible
25°
11
Patchy rain possible
25°
12
Sunny
25°
13
Partly cloudy
24°
14
Patchy rain possible
22°
15
Patchy rain possible
26°
16
Sunny
21°
17
Sunny
24°
18
Sunny
28°
19
Sunny
31°
20
Sunny
31°
21
Patchy rain possible
18°
22
Partly cloudy
17°
23
Moderate rain
12°
24
Patchy rain possible
16°
25
Partly cloudy
16°
26
Partly cloudy
17°
27
Partly cloudy
18°
28
Sunny
20°
29
Patchy rain possible
20°
30
Sunny
20°

Temperatures trend during September in Lyon

See the weather trend as well as the moving average line

September weather in Lyon day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 28° /14° 8 mm 6
2 Sept. Partly cloudy
Partly cloudy
 26° /15° 3.3 mm 6
3 Sept. Sunny
Sunny
 28° /15° 4.4 mm 7
4 Sept. Patchy rain possible
Patchy rain possible
 28° /15° 4.3 mm 6
5 Sept. Partly cloudy
Partly cloudy
 26° /15° 2.8 mm 6
6 Sept. Sunny
Sunny
 29° /14° 1.4 mm 7
7 Sept. Sunny
Sunny
 30° /16° 9.6 mm 7
8 Sept. Sunny
Sunny
 27° /16° 8.4 mm 6
9 Sept. Light rain shower
Light rain shower
 24° /15° 1.7 mm 6
10 Sept. Patchy rain possible
Patchy rain possible
 25° /14° 0.5 mm 6
11 Sept. Patchy rain possible
Patchy rain possible
 25° /14° 1 mm 6
12 Sept. Sunny
Sunny
 25° /13° 2.2 mm 6
13 Sept. Partly cloudy
Partly cloudy
 24° /13° 1.7 mm 6
14 Sept. Patchy rain possible
Patchy rain possible
 22° /14° 8 mm 5
15 Sept. Patchy rain possible
Patchy rain possible
 26° /13° 6.9 mm 6
16 Sept. Sunny
Sunny
 21° /12° 0 mm 1.2
17 Sept. Sunny
Sunny
 24° /12° 0 mm 1.3
18 Sept. Sunny
Sunny
 28° /14° 0 mm 1.3
19 Sept. Sunny
Sunny
 31° /15° 0 mm 1.3
20 Sept. Sunny
Sunny
 31° /17° 0 mm 1.3
21 Sept. Patchy rain possible
Patchy rain possible
 18° /14° 3.9 mm 4
22 Sept. Partly cloudy
Partly cloudy
 17° /11° 0 mm 4
23 Sept. Moderate rain
Moderate rain
 12° /10° 5.2 mm 3
24 Sept. Patchy rain possible
Patchy rain possible
 16° /8° 0.2 mm 3
25 Sept. Partly cloudy
Partly cloudy
 16° /6° 0 mm 4
26 Sept. Partly cloudy
Partly cloudy
 17° /6° 0 mm 4
27 Sept. Partly cloudy
Partly cloudy
 18° /9° 0 mm 4
28 Sept. Sunny
Sunny
 20° /7° 0 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 20° /12° 2.1 mm 3
30 Sept. Sunny
Sunny
 20° /9° 2.1 mm 5
Next
Important Notice
Our weather forecast for Lyon in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Lyon forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Lyon weather in September vs August vs October

Compare September weather in Lyon with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherSunny
Sunny
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures29°/17°24°/13°19°/11°
Rainfall77 mm115 mm108 mm
Wind13.4 km/h13.4 km/h15.8 km/h
Humidity58%65%71%
Rainy days18 days25 days19 days
Dry days13 days5 days12 days

Planning a trip to Lyon? Discover the best time to visit

Guide for Lyon in September

In September, Lyon, France experiences a transition from the lingering warmth of summer to the crispness of early autumn. At the beginning of the month, the weather in Lyon is generally pleasant, with temperatures averaging around 20° and occasional showers.

The city is still basking in the remnants of summer, making it an ideal time to explore its charming streets and outdoor attractions.

As the month progresses, Lyon gradually cools down, with temperatures dropping to around 16° by the end of September. The weather becomes noticeably cooler, and the occasional rain showers become more frequent.

Visitors can expect the autumnal colors to start emerging in the city's parks and gardens, creating a picturesque setting for leisurely strolls and outdoor activities.

Overall, September in Lyon offers a delightful blend of late summer warmth and early autumn coolness, making it a great time to experience the city's cultural events and culinary delights.

Whether enjoying a leisurely walk along the Rhône River or savoring the local cuisine at outdoor cafes, visitors can embrace the changing seasons while exploring the beauty of Lyon.

Lyon in September - FAQ

Is September a good time to visit Lyon?
Yes, September is a good time to traveling to Lyon, read more about the best time to visit Lyon.
What are the expected maximum and minimum temperatures in Lyon during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Lyon during September?
Significant rainfall exceeding 114.5 mm is expected in Lyon during September, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Lyon during September?
The average wind speed in Lyon during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Lyon in September?

As you prepare for your trip to Lyon in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Lyon, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

September rainfall patterns in Lyon

Explore the daily rainfall trends and prepare for Lyons September weather 💧

UV exposure in Lyon during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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