Climate averages 1991–2020
Trento weather
in September.
A mild, wet month: the 4th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
Approximate: the model cell is 503 m higher than the city, so the temperatures are adjusted up by 3.3°C. For places not marked Approximate, the cell is within 400 m of the place's elevation.
September is a mild month in Trento: daytime highs average 21.7°C and nights cool to about 14.9°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 121 mm of rain on roughly 11 days, which makes September a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 36 min on an average September day.
The nearest other city in this atlas is Bolzano (50 km away, marked approximate). In September its highs average 22.1°C, about as warm as Trento, with 93 mm of rain.
Among the 79 cities listed in Italy, Trento ranks joint 75th of 79 for the warmest September highs and 69th of 79 for the driest September (rainfall, lowest first). The mean September high of those 79 cities is 24.3°C; Trento is 2.6°C cooler than that mean.
From September to October, average highs fall by 4.5°C to 17.2°C, and monthly rainfall rises from 121 mm to 143 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Trento climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.5°C-1.2°C | -1.2°C | 53 | 6.5 | 9.19 h |
| February | 8.2°C0.3°C | 0.3°C | 59 | 7.4 | 10.310 h |
| March | 12.4°C4.2°C | 4.2°C | 79 | 9.8 | 11.912 h |
| April | 16.1°C8.0°C | 8.0°C | 115 | 14.7 | 13.514 h |
| May | 20.4°C12.6°C | 12.6°C | 132 | 17.0 | 14.915 h |
| June | 23.9°C16.3°C | 16.3°C | 130 | 16.8 | 15.716 h |
| July | 26.0°C18.3°C | 18.3°C | 124 | 15.7 | 15.415 h |
| August | 25.8°C18.5°C | 18.5°C | 124 | 15.1 | 14.214 h |
| September, selected | 21.7°C14.9°C | 14.9°C | 121 | 11.4 | 12.613 h |
| October | 17.2°C10.4°C | 10.4°C | 143 | 10.9 | 11.011 h |
| November | 11.7°C5.5°C | 5.5°C | 147 | 10.7 | 9.510 h |
| December | 7.5°C1.0°C | 1.0°C | 78 | 7.7 | 8.79 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Bolzano (approximate) in SeptemberItaly · 50 kmHigh 22.1°C · Low 13.7°C · 93 mm rain
- Vicenza in SeptemberItaly · 67 kmHigh 23.1°C · Low 13.8°C · 113 mm rain
- Verona in SeptemberItaly · 71 kmHigh 23.6°C · Low 15.1°C · 105 mm rain
- Brescia in SeptemberItaly · 92 kmHigh 22.2°C · Low 14.6°C · 112 mm rain
- Padua in SeptemberItaly · 94 kmHigh 23.6°C · Low 14.8°C · 107 mm rain
- Treviso in SeptemberItaly · 98 kmHigh 22.8°C · Low 14.0°C · 120 mm rain
- Mestre in SeptemberItaly · 108 kmHigh 23.0°C · Low 15.5°C · 123 mm rain
- Bergamo in SeptemberItaly · 120 kmHigh 21.6°C · Low 12.8°C · 134 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Trento) is explained once on the Trento year overview and on the Sources, method and limits page.