September weather forecastBastia, France
September
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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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).
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).
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).
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).
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).
Average daylight in September /
Average sunshine in September
Bastia, France
- Average daylight in September: 12h and 30min
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 24min
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).
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).
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).
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).
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).
