Monthly climate guide
Cortona weather in September
September in Cortona is typically warm, with average daytime highs around 26°C (78°F) and night-time lows near 14°C (56°F). The month usually brings about 66 mm of rain (some rain) and is a mix of sun and cloud. Daytime highs are 6°C cooler than August and 6°C warmer than October.
What stands out in September
- September brings early autumn to Cortona.
- Cortona is usually about 2°C cooler than Spoleto, 90 km away, in September.
- Afternoons and nights feel like different seasons, roughly 12°C apart.
- Temperatures are falling — expect highs around 6°C lower by October.
Avg high
26°C
78°F
Avg low
14°C
56°F
Rainfall
66 mm
some rain
Humidity
67%
relative
Sky
47%
cloud · a mix of sun and cloud
Cortona weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 8°C / 46°F | 0°C / 33°F | 56 mm | 90% | 65% |
| February | 9°C / 48°F | 1°C / 33°F | 75 mm | 87% | 64% |
| March | 13°C / 55°F | 3°C / 37°F | 73 mm | 82% | 58% |
| April | 17°C / 63°F | 6°C / 43°F | 57 mm | 77% | 60% |
| May | 21°C / 69°F | 9°C / 49°F | 67 mm | 73% | 61% |
| June | 27°C / 81°F | 14°C / 58°F | 40 mm | 62% | 41% |
| July | 31°C / 88°F | 17°C / 63°F | 39 mm | 53% | 30% |
| August | 32°C / 89°F | 18°C / 64°F | 37 mm | 53% | 28% |
| September | 26°C / 78°F | 14°C / 56°F | 66 mm | 67% | 47% |
| October | 20°C / 67°F | 9°C / 49°F | 84 mm | 78% | 56% |
| November | 14°C / 56°F | 6°C / 42°F | 105 mm | 88% | 66% |
| December | 9°C / 49°F | 2°C / 35°F | 68 mm | 91% | 61% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
Is September a good time to visit Cortona?
Compare the months in the chart above to find your ideal window.
Best time to visit Cortona →Other Italy cities in September
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Cortona weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/italy/cortona/september
<a href="https://weathercompare.eu/weather/italy/cortona/september">Cortona weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/italy/cortona" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Cortona weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/italy/cortona/september">Cortona weather in September</a> – WeatherCompare</p>
Cortona in September: quick answers
Is September a good time to visit Cortona?
September is a reasonable time for Cortona: highs around 26°C and about 66 mm of rain, though not one of the three best months.
How warm is Cortona in September?
Average highs are about 26°C (78°F) and average lows about 14°C (56°F), based on 10 years of daily data.
Does it rain a lot in Cortona in September?
Cortona typically gets around 66 mm of rain in September — some rain.
Figures are long-term averages for the area around Cortona (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.