Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The onset of September entails a temperature shift, as the average high-temperature decreases from a hot 33.8°C (92.8°F) in August to a warm 28.1°C (82.6°F). Arenas de San Juan's nights during September are marked by a pronounced drop from daytime temperatures, experiencing an average low of 15.9°C (60.6°F).Heat index
September's heat index is estimated at 28°C (82.4°F). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
In September, the average relative humidity in Arenas de San Juan is 42%.Rainfall
In Arenas de San Juan, in September, during 4.2 rainfall days, 12mm (0.47") of precipitation is typically accumulated. Throughout the year, in Arenas de San Juan, there are 86.6 rainfall days, and 245mm (9.65") of precipitation is accumulated.Snowfall
In Arenas de San Juan, snow does not fall in April through November.Daylight
In Arenas de San Juan, the average length of the day in September is 12h and 26min.On the first day of September in Arenas de San Juan, sunrise is at 07:43 and sunset at 20:44. On the last day of the month, sunrise is at 08:09 and sunset at 19:58 CEST.
Sunshine
The average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
Is it hot in Arenas de San Juan during September?
What is the average humidity in September in Arenas de San Juan?
How much does it rain in Arenas de San Juan in September?
When it does not snow in Arenas de San Juan?
What is the average length of the day in September in Arenas de San Juan?
What time are sunrise and sunset in September in Arenas de San Juan?
How long on average sun shines in September in Arenas de San Juan?
What is the UV index reading in September in Arenas de San Juan?
Average temperature in September
Arenas de San Juan, Spain
- Average high temperature in September: 28.1°C
The warmest month (with the highest average high temperature) is July (33.9°C).
The month with the lowest average high temperature is January (10.5°C).
- Average low temperature in September: 15.9°C
The month with the highest average low temperature is July (20.1°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in September
Arenas de San Juan, Spain
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is December (1023.4mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in September
Arenas de San Juan, Spain
- Average wind speed in September: 9.2km/h
The windiest months (with the highest average wind speed) are February and March (13.6km/h).
The calmest month (with the lowest average wind speed) is September (9.2km/h).
Average humidity in September
Arenas de San Juan, Spain
- Average humidity in September: 42%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is July (30%).
Average rainfall in September
Arenas de San Juan, Spain
- Average rainfall in September: 12mm
The wettest month (with the highest rainfall) is November (39mm).
The driest month (with the least rainfall) is July (4mm).
Average rainfall days in September
Arenas de San Juan, Spain
- Average rainfall days in September: 4.2 days
The month with the highest number of rainy days is April (12.8 days).
The months with the least rainy days are July and August (2.5 days).
Average snowfall in September
Arenas de San Juan, Spain
- Average snowfall in September: 0mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Arenas de San Juan, Spain
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Arenas de San Juan, Spain
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in September
Arenas de San Juan, Spain
- Average sunshine days in September: 24.7 days
The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is April (15.5 days).
Average UV index in September
Arenas de San Juan, Spain
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).
Average cloud cover in September
Arenas de San Juan, Spain
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 39).
The months with the least cloud cover are July and August (Cloud cover 7).
Average visibility in September
Arenas de San Juan, Spain
- Average visibility in September: 10km
The months with the highest visibility are February, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, March, April, November and December (9km).
Arenas de San Juan, Spain
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