Weather in Liège for September 2025
In general, the average temperature in Liège at the beginning of September is 25.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.3 °C by the end of September.
Liège experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 84.3 mm.
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Liège in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2 25° | 3 25° | 4  24° | 5  27° | 6 25° | 7 27° |
| 8 25° | 9  22° | 10 22° | 11 22° | 12 22° | 13 19° | 14 19° |
| 15 21° | 16 19° | 17 21° | 18 21° | 19 20° | 20  20° | 21 20° |
| 22 20° | 23 19° | 24 18° | 25 19° | 26  19° | 27  17° | 28 16° |
| 29 16° | 30 16° |
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Temperatures trend during September in Liège
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Sunny | 24° /12° | 9.5 mm | 6 | |
| 2 Sept. | Sunny | 25° /14° | 3.2 mm | 6 | |
| 3 Sept. | Sunny | 25° /13° | 0.7 mm | 6 | |
| 4 Sept. | Partly cloudy | 24° /12° | 1.6 mm | 6 | |
| 5 Sept. | Patchy rain possible | 27° /13° | 2.7 mm | 7 | |
| 6 Sept. | Partly cloudy | 25° /13° | 3.7 mm | 6 | |
| 7 Sept. | Sunny | 27° /14° | 1.6 mm | 7 | |
| 8 Sept. | Sunny | 25° /14° | 2 mm | 6 | |
| 9 Sept. | Moderate or heavy rain shower | 22° /14° | 5.3 mm | 5 | |
| 10 Sept. | Moderate or heavy rain shower | 22° /13° | 4.3 mm | 5 | |
| 11 Sept. | Patchy rain possible | 22° /12° | 4.8 mm | 5 | |
| 12 Sept. | Partly cloudy | 22° /11° | 1.7 mm | 6 | |
| 13 Sept. | Sunny | 19° /10° | 2.8 mm | 5 | |
| 14 Sept. | Moderate or heavy rain shower | 19° /10° | 5.4 mm | 5 | |
| 15 Sept. | Moderate or heavy rain shower | 21° /10° | 2 mm | 5 | |
| 16 Sept. | Patchy rain possible | 19° /9° | 0.9 mm | 5 | |
| 17 Sept. | Patchy rain possible | 21° /11° | 4.2 mm | 5 | |
| 18 Sept. | Partly cloudy | 21° /11° | 3.2 mm | 5 | |
| 19 Sept. | Partly cloudy | 20° /10° | 0.4 mm | 5 | |
| 20 Sept. | Overcast | 20° /10° | 0.2 mm | 5 | |
| 21 Sept. | Overcast | 20° /9° | 1.4 mm | 5 | |
| 22 Sept. | Sunny | 20° /8° | 0.8 mm | 5 | |
| 23 Sept. | Light rain shower | 19° /9° | 1.2 mm | 4 | |
| 24 Sept. | Patchy rain possible | 18° /9° | 2.3 mm | 4 | |
| 25 Sept. | Sunny | 19° /10° | 4.1 mm | 5 | |
| 26 Sept. | Cloudy | 19° /11° | 4.6 mm | 5 | |
| 27 Sept. | Heavy rain at times | 17° /9° | 4.3 mm | 4 | |
| 28 Sept. | Patchy rain possible | 16° /7° | 2.3 mm | 4 | |
| 29 Sept. | Moderate or heavy rain shower | 16° /7° | 2.2 mm | 4 | |
| 30 Sept. | Partly cloudy | 16° /6° | 0.6 mm | 4 | |
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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.
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Liège in September - FAQ
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
September rainfall patterns in Liège
UV exposure in Liège during September
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