Weather in Luxembourg for September 2027
In general, the average temperature in Luxembourg at the beginning of September is 22.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.8 °C by the end of September.
The climate of Luxembourg in September is notably wet, with an average of 11 rainy days, and a total of 67.8 mm of precipitation.
Is September a good time to visit Luxembourg? check out the best time to travel to Luxembourg page.
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Luxembourg Weather September
Temperatures trend during September in Luxembourg
September weather in Luxembourg day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 21° /13° | 3.8 mm | 5 | |
| 2 Sept. |  Light rain shower | 23° /14° | 0.9 mm | 4 | |
| 3 Sept. | Patchy rain possible | 23° /15° | 2.1 mm | 5 | |
| 4 Sept. | Light rain | 22° /14° | 3.9 mm | 5 | |
| 5 Sept. |  Sunny | 22° /13° | 0.9 mm | 5 | |
| 6 Sept. | Patchy rain possible | 23° /12° | 1.6 mm | 5 | |
| 7 Sept. | Sunny | 26° /14° | 0.4 mm | 5.6 | |
| 8 Sept. | Patchy rain possible | 24° /15° | 1.9 mm | 5 | |
| 9 Sept. | Light rain | 19° /13° | 3.1 mm | 5 | |
| 10 Sept. | Sunny | 21° /12° | 0.7 mm | 5 | |
| 11 Sept. | Patchy rain possible | 20° /11° | 2.3 mm | 4 | |
| 12 Sept. | Light rain | 19° /10° | 2.7 mm | 4 | |
| 13 Sept. | Light rain | 16° /10° | 2.8 mm | 3 | |
| 14 Sept. |  Cloudy | 19° /11° | 0.6 mm | 4 | |
| 15 Sept. |  Partly cloudy | 22° /11° | 0.5 mm | 4.9 | |
| 16 Sept. | Patchy rain possible | 18° /12° | 1.3 mm | 4 | |
| 17 Sept. |  Fog | 20° /11° | 0.2 mm | 4 | |
| 18 Sept. | Patchy rain possible | 21° /12° | 1.1 mm | 4.6 | |
| 19 Sept. | Mist | 21° /11° | 0.7 mm | 4 | |
| 20 Sept. | Partly cloudy | 22° /11° | 0.3 mm | 4.4 | |
| 21 Sept. |  Moderate rain | 20° /10° | 11.6 mm | 4 | |
| 22 Sept. | Light rain | 17° /10° | 3.7 mm | 4 | |
| 23 Sept. | Light rain shower | 16° /8° | 1 mm | 3 | |
| 24 Sept. | Light rain | 15° /9° | 6.4 mm | 3 | |
| 25 Sept. | Light rain | 16° /8° | 4.4 mm | 3 | |
| 26 Sept. | Light rain | 18° /9° | 7.6 mm | 3.9 | |
| 27 Sept. |  Overcast | 19° /10° | 0.4 mm | 3 | |
| 28 Sept. | Cloudy | 19° /10° | 0.4 mm | 3 | |
| 29 Sept. | Patchy rain possible | 19° /11° | 0.1 mm | 3 | |
| 30 Sept. | Patchy rain possible | 19° /10° | 0.5 mm | 3 | |
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Guide for Luxembourg in September
In September, Luxembourg experiences a transition from the late summer to early autumn weather. At the beginning of the month, the weather in Luxembourg is generally mild and pleasant, with average temperatures ranging from 15° to 20°.
The days are still relatively long, providing ample opportunity for outdoor activities and sightseeing. However, occasional rainfall can be expected, so it's advisable to carry an umbrella or light raincoat.
As the month progresses towards the end, the temperatures in Luxembourg start to gradually decrease. By the end of September, the average temperatures typically range from 10° to 15°. The days become shorter, and there is a noticeable crispness in the air as autumn takes hold.
Visitors can witness the stunning transformation of the city's foliage, as the leaves begin to change color, creating a picturesque setting for leisurely strolls through the parks and gardens.
Overall, September in Luxembourg offers a delightful blend of lingering warmth and the onset of autumnal charm, making it an ideal time to explore the city's cultural attractions and natural beauty.