Locarno weather in September
Temperature, rain 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: March – October
What is the weather like in Locarno in September?
In September, Locarno is warm: daytime highs average 22 °C, and nights cool down to about 15 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 167 mm in total. All in all, September is a good month for a holiday in Locarno.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 71 | 77 | 69 |
| Day | 26° | 22° | 17° |
| Night | 18° | 15° | 11° |
| Sun | 8 h | 7 h | 5 h |
| Rain days | 12 | 11 | 12 |
More details for September
- Daylight
- 12 h 38 min07:01 – 19:39
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 7 km/haverage daily peakAll months
- Cloud cover
- 58 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/Zurich
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %60 %
- Few rainy daysweight 30 %51 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.
What to pack in September
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Locarno in September: quick answers
Is Locarno hot in September?
Warm rather than hot: in September, daytime highs in Locarno average 22 °C and nights cool to about 15 °C.
Does it rain much in Locarno in September?
Rain is frequent, with about 11 rainy days and 167 mm in total.
Locarno month by month
The whole year in LocarnoAll 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). Sources & licences