September weather forecastArroyo de San Serván, Spain
September
Weather in September
September, the first month of the autumn in Arroyo de San Serván, is still a hot month, with an average temperature varying between 17°C (62.6°F) and 30.3°C (86.5°F).Temperature
September's onset introduces a mild reduction in the average high-temperature, from a sweltering 35°C (95°F) in August to a hot 30.3°C (86.5°F). Despite a significant daily temperature range, Arroyo de San Serván's temperature falls to a steady low-temperature average of 17°C (62.6°F) in September.Heat index
For September, the heat index is computed to be a tropical 30°C (86°F). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.Heat index determinations are made taking into account the shade and light air movements. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In Arroyo de San Serván, the average relative humidity in September is 43%.Rainfall
In Arroyo de San Serván, during September, the rain falls for 5 days and regularly aggregates up to 10mm (0.39") of precipitation. In Arroyo de San Serván, during the entire year, the rain falls for 93.1 days and collects up to 281mm (11.06") of precipitation.Snowfall
February through December are months without snowfall.Daylight
In September, the average length of the day in Arroyo de San Serván is 12h and 26min.On the first day of September in Arroyo de San Serván, sunrise is at 07:55 and sunset at 20:56. On the last day of the month, sunrise is at 08:21 and sunset at 20:09 CEST.
Sunshine
In September, the average sunshine in Arroyo de San Serván, Spain, is 9.5h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Arroyo de San Serván, Spain
- Average high temperature in September: 30.3°C
The warmest month (with the highest average high temperature) is August (35°C).
The month with the lowest average high temperature is January (12.8°C).
- Average low temperature in September: 17°C
The month with the highest average low temperature is July (19.2°C).
The coldest month (with the lowest average low temperature) is January (3.9°C).
Average pressure in September
Arroyo de San Serván, Spain
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is December (1023.2mbar).
The month with the lowest atmospheric pressure is July (1014.9mbar).
Average wind speed in September
Arroyo de San Serván, Spain
- Average wind speed in September: 8.3km/h
The windiest month (with the highest average wind speed) is March (11.6km/h).
The calmest month (with the lowest average wind speed) is September (8.3km/h).
Average humidity in September
Arroyo de San Serván, Spain
- Average humidity in September: 43%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (36%).
Average rainfall in September
Arroyo de San Serván, Spain
- Average rainfall in September: 10mm
The wettest month (with the highest rainfall) is November (43mm).
The driest month (with the least rainfall) is August (3mm).
Average rainfall days in September
Arroyo de San Serván, Spain
- Average rainfall days in September: 5 days
The month with the highest number of rainy days is April (13.3 days).
The months with the least rainy days are July and August (1.8 days).
Average snowfall in September
Arroyo de San Serván, Spain
- Average snowfall in September: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Arroyo de San Serván, Spain
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Arroyo de San Serván, Spain
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 7h and 18min).
Average sunshine days in September
Arroyo de San Serván, Spain
- Average sunshine days in September: 23.5 days
The month with the most sunshine days is August (28.4 days).
The month with the least sunshine days is April (14.4 days).
Average UV index in September
Arroyo de San Serván, Spain
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Arroyo de San Serván, Spain
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in September
Arroyo de San Serván, Spain
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).
