September weather forecastOrio, Spain
September
Weather in September
September, the first month of the autumn in Orio, is still a pleasant month, with an average temperature fluctuating between 15.5°C (59.9°F) and 21.1°C (70°F).Temperature
Orio's entry into September measures an average high-temperature of a pleasant 21.1°C (70°F), closely parallel to the preceding month. Orio, during September nights, observes an average temperature of 15.5°C (59.9°F).Humidity
The average relative humidity in September is 76%.Rainfall
September is the month with the least rainfall in Orio. Rain falls for 15.5 days and accumulates 44mm (1.73") of precipitation.Snowfall
April through November are months without snowfall in Orio.Sea temperature
In Orio, Spain, the average seawater temperature in September is 20.8°C (69.4°F).Note: In water with a temperature of 20.8°C (69.4°F), swimming is not a joy for most people. The challenge of controlling breathing increases as the temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day is 12h and 30min.On the first day of September, sunrise is at 07:33 and sunset at 20:43. On the last day of the month, sunrise is at 08:05 and sunset at 19:51 CEST.
Sunshine
In September, the average sunshine in Orio is 8.3h.UV index
May through September, with an average maximum UV index of 5, are months with the highest UV index in Orio, Spain. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Orio, Spain
- Average high temperature in September: 21.1°C
The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (9.9°C).
- Average low temperature in September: 15.5°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (6.1°C).
Average pressure in September
Orio, Spain
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1021.8mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Orio, Spain
- Average wind speed in September: 10.8km/h
The windiest month (with the highest average wind speed) is November (16.8km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).
Average humidity in September
Orio, Spain
- Average humidity in September: 76%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Orio, Spain
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is November (121mm).
The driest month (with the least rainfall) is September (44mm).
Average rainfall days in September
Orio, Spain
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is October (14.8 days).
Average snowfall in September
Orio, Spain
- Average snowfall in September: 0mm
The month with the highest snowfall is February (7mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Orio, Spain
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Orio, Spain
- Average sea temperature in September: 20.8°C
The best month for swimming (with the highest average sea temperature) is August (21.3°C).
The coldest month (with the lowest average sea temperature) is February (12.4°C).
Average daylight in September /
Average sunshine in September
Orio, Spain
- 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 0min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is November (Average sunshine: 4h and 48min).
Average sunshine days in September
Orio, Spain
- Average sunshine days in September: 11.6 days
The month with the most sunshine days is October (13.6 days).
The month with the least sunshine days is May (6.8 days).
Average UV index in September
Orio, Spain
- Average UV index in September: 5
The months with the highest UV index are May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in September
Orio, Spain
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in September
Orio, Spain
- Average visibility in September: 10km
The months with the highest visibility are February, March, June, July, August, September, October and December (10km).
The months with the lowest visibility are January, April, May and November (9km).





