September weather forecastSisterna, Spain
September
Weather in September
September, the first month of the autumn in Sisterna, is still a pleasant month, with temperature in the range of an average low of 9°C (48.2°F) and an average high of 22.8°C (73°F).Temperature
With the onset of September, Sisterna experiences a modest temperature adjustment, with the average high-temperature gently receding from a warm 26.3°C (79.3°F) in August to a pleasant 22.8°C (73°F). In September, the temperature registers a significant dip to an average of 9°C (48.2°F) at night.Humidity
The average relative humidity in September in Sisterna is 66%.Rainfall
In September, the rain falls for 8 days. Throughout September, 20mm (0.79") of precipitation is accumulated. In Sisterna, during the entire year, the rain falls for 157.5 days and collects up to 576mm (22.68") of precipitation.Snowfall
In Sisterna, snow does not fall in May through October.Daylight
In Sisterna, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 07:51 and sunset at 21:01. On the last day of September, in Sisterna, sunrise is at 08:23 and sunset at 20:09 CEST.
Sunshine
The average sunshine in September is 9.3h.UV index
In Sisterna, Spain, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sisterna, Spain
- Average high temperature in September: 22.8°C
The warmest month (with the highest average high temperature) is August (26.3°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in September: 9°C
The months with the highest average low temperature are July and August (10.8°C).
The coldest month (with the lowest average low temperature) is February (-0.3°C).
Average pressure in September
Sisterna, Spain
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Sisterna, Spain
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is February (9km/h).
The calmest month (with the lowest average wind speed) is September (6.4km/h).
Average humidity in September
Sisterna, Spain
- Average humidity in September: 66%
The months with the highest relative humidity are January and November (85%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Sisterna, Spain
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is November (91mm).
The driest month (with the least rainfall) is August (15mm).
Average rainfall days in September
Sisterna, Spain
- Average rainfall days in September: 8 days
The months with the highest number of rainy days are April and November (17.4 days).
The month with the least rainy days is August (5.5 days).
Average snowfall in September
Sisterna, Spain
- Average snowfall in September: 0mm
The month with the highest snowfall is February (32mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Sisterna, Spain
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Sisterna, 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 6min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Sisterna, Spain
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is August (21.7 days).
The month with the least sunshine days is November (8.8 days).
Average UV index in September
Sisterna, Spain
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Sisterna, Spain
- Average cloud cover in September: 25
The month with the most cloud cover is November (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Sisterna, Spain
- Average visibility in September: 9km
The months with the highest visibility are June, July, August and September (9km).
The months with the lowest visibility are January and November (7km).
