Monthly climate guide
Bastia weather in September
September in Bastia is typically warm, with average daytime highs around 25°C (77°F) and night-time lows near 19°C (66°F). The month usually brings about 42 mm of rain (fairly dry) and is a mix of sun and cloud. Daytime highs are 5°C cooler than August and 4°C warmer than October.
What stands out in September
- In Bastia, September is early autumn.
- Bastia is usually about 2°C warmer than Calvi, 60 km away, in September.
- Days and nights are close, only about 6°C apart.
- Temperatures are falling — expect highs around 4°C lower by October.
Avg high
25°C
77°F
Avg low
19°C
66°F
Rainfall
42 mm
fairly dry
Humidity
62%
relative
Sky
35%
cloud · a mix of sun and cloud
Bastia weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 11°C / 52°F | 7°C / 44°F | 64 mm | 79% | 54% |
| February | 11°C / 52°F | 6°C / 43°F | 79 mm | 77% | 52% |
| March | 14°C / 56°F | 8°C / 46°F | 76 mm | 75% | 49% |
| April | 17°C / 63°F | 11°C / 51°F | 48 mm | 72% | 46% |
| May | 20°C / 68°F | 14°C / 56°F | 48 mm | 68% | 44% |
| June | 26°C / 78°F | 19°C / 65°F | 23 mm | 60% | 29% |
| July | 29°C / 85°F | 22°C / 71°F | 15 mm | 54% | 21% |
| August | 30°C / 85°F | 22°C / 72°F | 13 mm | 53% | 21% |
| September | 25°C / 77°F | 19°C / 66°F | 42 mm | 62% | 35% |
| October | 21°C / 69°F | 15°C / 59°F | 78 mm | 73% | 43% |
| November | 16°C / 60°F | 11°C / 52°F | 103 mm | 78% | 53% |
| December | 12°C / 54°F | 8°C / 46°F | 62 mm | 79% | 46% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A small travel umbrella, just in case
- Sunglasses
Is September a good time to visit Bastia?
Compare the months in the chart above to find your ideal window.
Best time to visit Bastia →Other France 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.
Bastia weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/france/bastia/september
<a href="https://weathercompare.eu/weather/france/bastia/september">Bastia weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/france/bastia" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Bastia weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/france/bastia/september">Bastia weather in September</a> – WeatherCompare</p>
Bastia in September: quick answers
Is September a good time to visit Bastia?
Yes. September is one of the best months for Bastia, with highs around 25°C and about 42 mm of rain.
How warm is Bastia in September?
Average highs are about 25°C (77°F) and average lows about 19°C (66°F), based on 10 years of daily data.
Does it rain a lot in Bastia in September?
Bastia typically gets around 42 mm of rain in September — fairly dry.
Figures are long-term averages for the area around Bastia (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.