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Weather in Liège for September 2025

Your guide to Liège weather in September - trends and predictions
  • In general, the average temperature in Liège at the beginning of September is 25.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.9 °C by the end of September.

  • The climate of Liège in September is notably wet, with an average of 11 rainy days.

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

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/13°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Liège in September average weather

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Temperatures trend during September in Liège

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
25° /14° 19.1 mm 6
2 Sept. Patchy rain possible
Patchy rain possible
26° /15° 6.5 mm 6
3 Sept. Partly cloudy
Partly cloudy
25° /15° 0.6 mm 6
4 Sept. Partly cloudy
Partly cloudy
22° /12° 3.3 mm 6
5 Sept. Sunny
Sunny
27° /14° 5.3 mm 7
6 Sept. Sunny
Sunny
24° /13° 0.7 mm 6
7 Sept. Sunny
Sunny
29° /13° 0.5 mm 7
8 Sept. Sunny
Sunny
26° /14° 0.3 mm 6
9 Sept. Overcast
Overcast
23° /14° 6 mm 5
10 Sept. Sunny
Sunny
24° /13° 1.2 mm 6
11 Sept. Sunny
Sunny
22° /12° 9.2 mm 5
12 Sept. Cloudy
Cloudy
19° /10° 3.5 mm 5
13 Sept. Fog
Fog
17° /7° 1.1 mm 4
14 Sept. Cloudy
Cloudy
19° /8° 0 mm 5
15 Sept. Sunny
Sunny
21° /7° 0 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
21° /11° 1.6 mm 5
17 Sept. Light rain shower
Light rain shower
23° /13° 6.9 mm 6
18 Sept. Overcast
Overcast
23° /13° 1.3 mm 6
19 Sept. Cloudy
Cloudy
22° /11° 0.6 mm 6
20 Sept. Cloudy
Cloudy
23° /12° 0 mm 6
21 Sept. Light rain shower
Light rain shower
22° /11° 2.9 mm 6
22 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
20° /11° 1.6 mm 5
23 Sept. Light rain shower
Light rain shower
18° /10° 2.3 mm 4
24 Sept. Cloudy
Cloudy
18° /9° 1.8 mm 5
25 Sept. Sunny
Sunny
18° /11° 7.8 mm 5
26 Sept. Sunny
Sunny
19° /12° 3.5 mm 5
27 Sept. Overcast
Overcast
19° /10° 3.2 mm 4
28 Sept. Cloudy
Cloudy
17° /8° 2.9 mm 4
29 Sept. Light rain shower
Light rain shower
18° /8° 1 mm 4
30 Sept. Partly cloudy
Partly cloudy
16° /7° 1.3 mm 4
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Important Notice
Our weather forecast for Liège 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 Liège forecast closer to your planned date for the most up-to-date weather information.

Guide for Liège in September

In Liège, Belgium, September marks the transition from summer to autumn, bringing about noticeable changes in the weather. At the beginning of the month, the average temperature hovers around 16°, with mild and pleasant conditions.

However, as the month progresses, the temperatures gradually begin to drop. By the end of September, the average temperature in Liège typically decreases to around 13°, signaling the onset of cooler autumn weather.

In terms of precipitation, Liège experiences moderate rainfall throughout September. At the start of the month, occasional showers are common, but as September progresses, the frequency of rainfall tends to increase.

Towards the end of the month, the city often experiences more consistent and heavier rainfall, contributing to the autumnal atmosphere.

Overall, September in Liège offers a mix of mild temperatures at the beginning of the month, transitioning to cooler and wetter conditions by the end.

Travelers visiting Liège during this time should be prepared for varying weather patterns and may want to pack layers and waterproof clothing to accommodate the changing climate.

Liège in September - FAQ

Is September a good time to visit Liège?
Yes, September is a good time to traveling to Liège, read more about the best time to visit Liège.
What are the expected maximum and minimum temperatures in Liège during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Liège during September?
Moderate rainfall is anticipated in Liège during September, with a total of 84.2 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Liège during September?
The average wind speed in Liège during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Liège in September?

As you prepare for your trip to Liège 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 Liège, 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

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Location coordinates Where is Liège?

Get accurate weather forecasts for Liège, located at latitude 50.634 and longitude 5.567. Stay updated with localized weather information tailored for Liège.

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