September · Luxembourg
Best time to visit Vianden in September Weather, crowds & prices
Weather in Vianden in September
Average temperature 15°C, 94 mm of rain, about 10 days with 6+ hours of sunshine and 77% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
7.3/10
Ranked #5 of 12 months
- Avg temp
- 15°C
- Rainfall
- 94 mm
- Humidity
- 77%
- Days with 6h+ sun
- 10
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Vianden scores 7.3/10 for sightseeing and cultural travel - an above-average month (#5 of 12). Expect around 15°C, 94 mm of rain, and roughly 10 days with 6+ hours of sunshine this month.
Vianden is crowned by a restored medieval castle above the Our valley-one of Luxembourg’s most photogenic towns. Best window: late spring through early autumn.
September in Vianden: strong conditions, 5th of 12
Temperatures hover around 15°C (59°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 94 mm of rain this month — a flexible day or two helps — with about 10 days with 6+ hours of sunshine and 12.4 hours of daylight to work around it.
That is 7.3/10 on the same scale — 5th of 12 months, versus 8.9/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Expect mid-season pricing, and crowds are moderate.
If your dates are flexible, July is materially better in Vianden — 1.6 points higher on the same scale.
Frequently asked
- What is the weather like in Vianden in September?
- In September, Vianden averages 15°C, 94 mm of rain, and about 10 days with 6+ hours of sunshine. Its climate-comfort score is 7.3/10.
- Is September a good time to visit Vianden?
- September earns a 7.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Vianden in September?
- Expect about 94 mm of rain in September. Average humidity is 77% and there are about 10 days with 6+ hours of sunshine.
Curated in Vianden
Tickets & experiences
Things to do in Vianden
Vianden, Luxembourg. Live activities and tours from GetYourGuide, matched to this destination.