Bastia Weather in September

September in Bastia averages 24°C (75°F) during the day and 19°C (66°F) at night. Quite a bit of rainfall is typical this month, with around 63 mm (2.5 in) on average. An umbrella is a good idea.

Rainfall in Bastia in September

Typically, about 8 days will experience rainfall, with an average of 63 mm (2.5 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Bastia in September

Bastia in September is worth a visit. The temperature is excellent, with 24°C (75°F) during the day and 19°C (66°F) at night. September is part of the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to around 19°C (66°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Bastia in September

Enjoy a sunny month with about 239 hours of sunshine, the clear skies make Bastia even more beautiful.

Wind Speed in Bastia in September

Wind speeds average 2 m/s (4 knots) during September. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.

Average water temperature in September

With water at 22°C (72°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.

If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August and September typically offer the best circumstances for Bastia.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Corsica, check out our Bastia's climate page.

Bastia Temperature in September

Min Temperature 19°C (66°F)  

Max Temperature 24°C (75°F)  

Water Temperature 22°C (72°F)  

Chance of Rain 26%  

Precipitation 63 mm (2.5 in)  

Rainy days 8 days  

Humidity 75%  

Windspeed 2 m/s (4 knots)  

Sunshine 239 hours  

Percentage Sunshine  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Bastia typically stay consistent throughout September, with daily highs averaging around 24°C (75°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 18°C (64°F).

Average temperatures in September

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

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‹ January February March April May June July August September October November December ›

Historical weather for Bastia in September

Browse day-by-day weather records for Bastia spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

‹ 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 ›

‹ January February March April May June July August September October November December ›

Bastia historical weather extremes in September

According to our 49 years of weather records for Bastia, the following extremes were recorded between 1976 and 2025.

• Bastia recorded its highest September temperature of 35°C (95°F) on September 23, 1987.
• The lowest daytime temperature in September was 16°C (61°F), recorded on September 27, 2020.
• The lowest overnight temperature recorded in September was 8°C (46°F) (September 28, 2007).

What to Wear in Bastia in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 22°C (72°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Bastia in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

10/10

Walking

10/10

Barbeque

8/10

Camping

8/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Corsica, check out our Bastia's climate page.

More climate data for Bastia

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Bastia climate overview or explore weather in Corsica.