September weather forecast
Bastia, France

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Weather in September

September, the first month of the autumn in Bastia, is still a warm month, with an average temperature ranging between min 18.3°C (64.9°F) and max 23.6°C (74.5°F).

Temperature

The onset of September aligns with a soft reduction in the average high-temperature, gently falling from 27.4°C (81.3°F) in August to a still warm 23.6°C (74.5°F). Bastia's temperature drops to an average low of 18.3°C (64.9°F) during the nights of September.

Humidity

The average relative humidity in September in Bastia, France, is 70%.

Rainfall

In Bastia, France, in September, it is raining for 8.6 days, with typically 26mm (1.02") of accumulated precipitation. In Bastia, France, during the entire year, the rain falls for 101.4 days and collects up to 325mm (12.8") of precipitation.

Snowfall

In Bastia, snow does not fall in April through December.

Sea temperature

In September, the average sea temperature is 23.1°C (73.6°F).
Note: Cold sensitivities vary, but with the right amount of sunshine, a gentle breeze, and a warm day, a swim in 23.1°C (73.6°F) waters might be just right. Remember, Olympic swimmers are used to waters between 25°C (77°F) and 28°C (82.4°F).

Daylight

In September, the average length of the day is 12h and 29min.
On the first day of the month, sunrise is at 06:47 and sunset at 19:56. On the last day of September, sunrise is at 07:18 and sunset at 19:05 CEST.

Sunshine

In Bastia, the average sunshine in September is 10.4h.

UV index

In Bastia, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Take necessary precautions - Protection from skin and eye injury is mandatory. The solar radiation around mid-day is intense; avoid the Sun and stay safe. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
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Frequently asked questions

What is the average September temperature in Bastia?

In Bastia, 23.6°C (74.5°F) is the average high-temperature and 18.3°C (64.9°F) is the average low-temperature during September. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in August is estimated at 29°C (84.2°F).

What is the average humidity in September in Bastia?

In Bastia, France, the average relative humidity in September is 70%.

How many days does it rain in September in Bastia?

In Bastia, France, in September, during 8.6 rainfall days, 26mm (1.02") of precipitation is typically accumulated.

When it does not snow in Bastia?

In Bastia, snow does not fall in April through December.

What is the water temperature in September in Bastia?

In September, the average sea temperature is 23.1°C (73.6°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 23.1°C (73.6°F) water may be enjoyable.

How many hours of daylight does Bastia have in September?

In September, the average day length in Bastia, France, is 12h and 29min.

What time are sunrise and sunset in September in Bastia?

On the first day of September, sunrise is at 06:47 and sunset at 19:56. On the last day of the month, sunrise is at 07:18 and sunset at 19:05 CEST.

How long on average sun shines in September in Bastia?

In September, the average sunshine duration in Bastia is 10.4h.

How high is the UV index in September in Bastia?

The average daily maximum UV index in September in Bastia is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Bastia, France

Average temperature in September - Bastia, France
  • Average high temperature in September: 23.6°C

The warmest month (with the highest average high temperature) is August (27.4°C).
The month with the lowest average high temperature is January (11.3°C).

  • Average low temperature in September: 18.3°C

The month with the highest average low temperature is August (20.8°C).
The coldest month (with the lowest average low temperature) is February (6.5°C).

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Average pressure in September
Bastia, France

Average pressure in September - Bastia, France
  • Average pressure in September: 1015.3mbar

The month with the highest atmospheric pressure is December (1017.9mbar).
The month with the lowest atmospheric pressure is November (1013.6mbar).

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Average wind speed in September
Bastia, France

Average wind speed in September - Bastia, France
  • Average wind speed in September: 9.3km/h

The windiest month (with the highest average wind speed) is March (12.7km/h).
The calmest month (with the lowest average wind speed) is August (7.6km/h).

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Average humidity in September
Bastia, France

Average humidity in September - Bastia, France
  • Average humidity in September: 70%

The month with the highest relative humidity is November (77%).
The months with the lowest relative humidity are July and August (67%).

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Average rainfall in September
Bastia, France

Average rainfall in September - Bastia, France
  • Average rainfall in September: 26mm

The wettest month (with the highest rainfall) is October (47mm).
The driest month (with the least rainfall) is July (18mm).

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Average rainfall days in September
Bastia, France

Average rainfall days in September - Bastia, France
  • Average rainfall days in September: 8.6 days

The month with the highest number of rainy days is November (11.1 days).
The month with the least rainy days is August (5.8 days).

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Average snowfall in September
Bastia, France

Average snowfall in September - Bastia, France
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (3mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in September
Bastia, France

Average snowfall days in September - Bastia, France
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in September
Bastia, France

Average sea temperature in September - Bastia, France
  • Average sea temperature in September: 23.1°C

The best month for swimming (with the highest average sea temperature) is August (24.2°C).
The coldest month (with the lowest average sea temperature) is February (13.2°C).

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Average daylight in September /
Average sunshine in September
Bastia, France

Average daylight in September / Average sunshine in September - Bastia, France
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 10h and 2min

The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).

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Average sunshine days in September
Bastia, France

Average sunshine days in September - Bastia, France
  • Average sunshine days in September: 18 days

The months with the most sunshine days are July and August (22.3 days).
The month with the least sunshine days is November (17.5 days).

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Average UV index in September
Bastia, France

Average UV index in September - Bastia, France
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Bastia, France

Average cloud cover in September - Bastia, France
  • Average cloud cover in September: 16

The month with the most cloud cover is January (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in September
Bastia, France

Average visibility in September - Bastia, France
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Bastia, France

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