September weather forecastBolonia, Spain
September
Weather in September
September, the first month of the autumn in Bolonia, is also a moderately hot month, with an average temperature varying between 20.5°C (68.9°F) and 24.2°C (75.6°F).Temperature
Bolonia's September average high-temperature settles at a still moderately hot 24.2°C (75.6°F), showing a near match with the preceding month. Bolonia encounters a small divergence from daytime high temperatures, averaging a low-temperature of 20.5°C (68.9°F) during September nights.Humidity
The months with the highest humidity in Bolonia are April, September, October and December, with an average relative humidity of 78%.Rainfall
In Bolonia, in September, it is raining for 5.5 days, with typically 15mm (0.59") of accumulated precipitation. In Bolonia, during the entire year, the rain falls for 96 days and collects up to 396mm (15.59") of precipitation.Daylight
In Bolonia, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 07:55 and sunset at 20:50. On the last day of September, sunrise is at 08:17 and sunset at 20:08 CEST.
Sunshine
In September, the average sunshine is 9.3h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 6 during September translates into the following guidance:
Take precautions against overexposure. Protection against sun damage is needed. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bolonia, Spain
- Average high temperature in September: 24.2°C
The warmest month (with the highest average high temperature) is August (26.3°C).
The months with the lowest average high temperature are January and February (15°C).
- Average low temperature in September: 20.5°C
The month with the highest average low temperature is August (21.8°C).
The coldest month (with the lowest average low temperature) is February (11.7°C).
Average pressure in September
Bolonia, Spain
- Average pressure in September: 1016mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is August (1014.6mbar).
Average wind speed in September
Bolonia, Spain
- Average wind speed in September: 17km/h
The windiest month (with the highest average wind speed) is March (22km/h).
The calmest month (with the lowest average wind speed) is July (16.2km/h).
Average humidity in September
Bolonia, Spain
- Average humidity in September: 78%
The months with the highest relative humidity are April, September, October and December (78%).
The months with the lowest relative humidity are June and July (74%).
Average rainfall in September
Bolonia, Spain
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is November (79mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in September
Bolonia, Spain
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is July (1.8 days).
Average daylight in September /
Average sunshine in September
Bolonia, Spain
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is March (Average sunshine: 7h and 42min).
Average sunshine days in September
Bolonia, Spain
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is February (15.7 days).
Average UV index in September
Bolonia, Spain
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Bolonia, Spain
- Average cloud cover in September: 21
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Bolonia, Spain
- 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).
