Monthly climate guide
Sirmione weather in September
September in Sirmione is typically warm, with average daytime highs around 25°C (76°F) and night-time lows near 15°C (59°F). The month usually brings about 72 mm of rain (some rain) and is often cloudy. Daytime highs are 5°C cooler than August and 6°C warmer than October.
What stands out in September
- Temperatures are falling — expect highs around 6°C lower by October.
- In Sirmione, September is early autumn.
- Sirmione is usually about 8°C warmer than Riva del Garda, 50 km away, in September.
Avg high
25°C
76°F
Avg low
15°C
59°F
Rainfall
72 mm
some rain
Humidity
67%
relative
Sky
59%
cloud · often cloudy
Sirmione weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 7°C / 44°F | 0°C / 32°F | 37 mm | 77% | 63% |
| February | 8°C / 47°F | 1°C / 34°F | 64 mm | 77% | 66% |
| March | 13°C / 55°F | 4°C / 40°F | 59 mm | 74% | 61% |
| April | 17°C / 63°F | 8°C / 47°F | 70 mm | 71% | 64% |
| May | 21°C / 70°F | 12°C / 53°F | 103 mm | 70% | 68% |
| June | 26°C / 79°F | 17°C / 63°F | 77 mm | 66% | 59% |
| July | 30°C / 85°F | 20°C / 67°F | 74 mm | 59% | 52% |
| August | 30°C / 85°F | 20°C / 67°F | 78 mm | 59% | 51% |
| September | 25°C / 76°F | 15°C / 59°F | 72 mm | 67% | 59% |
| October | 19°C / 65°F | 10°C / 50°F | 97 mm | 74% | 65% |
| November | 12°C / 54°F | 6°C / 42°F | 103 mm | 81% | 67% |
| December | 8°C / 46°F | 1°C / 35°F | 53 mm | 78% | 63% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is September a good time to visit Sirmione?
Compare the months in the chart above to find your ideal window.
Best time to visit Sirmione →Other Italy cities in September
Cite or embed this data
Writing about this destination? Copy a ready-made citation or embed a live widget — free, just keep the link.
Sirmione weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/italy/sirmione/september
<a href="https://weathercompare.eu/weather/italy/sirmione/september">Sirmione weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/italy/sirmione" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Sirmione weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/italy/sirmione/september">Sirmione weather in September</a> – WeatherCompare</p>
Sirmione in September: quick answers
Is September a good time to visit Sirmione?
Yes. September is one of the best months for Sirmione, with highs around 25°C and about 72 mm of rain.
How warm is Sirmione in September?
Average highs are about 25°C (76°F) and average lows about 15°C (59°F), based on 10 years of daily data.
Does it rain a lot in Sirmione in September?
Sirmione typically gets around 72 mm of rain in September — some rain.
Figures are long-term averages for the area around Sirmione (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.