Lucerne weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: May – September
What is the weather like in Lucerne in September?
In September, Lucerne is mild: daytime highs average 19 °C, and nights cool down to about 12 °C. Expect around 5 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 120 mm in total. All in all, September is a good month for a holiday in Lucerne.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 69 | 69 | 49 |
| Day | 23° | 19° | 15° |
| Night | 15° | 12° | 8° |
| Sun | 6 h | 5 h | 3 h |
| Rain days | 15 | 12 | 13 |
More details for September
- Daylight
- 12 h 39 min07:03 – 19:41
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 9 km/haverage daily peak
- Cloud cover
- 62 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Zurich
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %32 %
- Few rainy daysweight 30 %41 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Lucerne in September: quick answers
Is Lucerne hot in September?
No. In September, Lucerne is mild: daytime highs average 19 °C and nights drop to about 12 °C.
Does it rain much in Lucerne in September?
Rain is frequent, with about 12 rainy days and 120 mm in total.
Lucerne month by month
The whole year in LucerneAll destinations: SwitzerlandWhere to go in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)