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 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
September
Weather in September
Temperature
The average high-temperature is a still warm 27.3°C (81.1°F) in September, hardly different from the 25°C (77°F) recorded in August. The low-temperature average for San Antonio during September stands at a mild 15.9°C (60.6°F).Heat index
The heat index value for September is estimated at 29°C (84.2°F). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
The average relative humidity in September is 69%.Rainfall
In San Antonio, Paraguay, during September, the rain falls for 9.4 days and regularly aggregates up to 36mm (1.42") of precipitation. Throughout the year, there are 153.2 rainfall days, and 865mm (34.06") of precipitation is accumulated.Daylight
In September, the average length of the day is 11h and 58min.On the first day of September, sunrise is at 06:01 and sunset at 17:38. On the last day of the month, sunrise is at 05:30 and sunset at 17:49 -04.
Sunshine
In September, the average sunshine is 8.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: An average UV index of 6 in September transforms into this advice:
Take precautions against overexposure. Protection against sun damage is needed. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September in San Antonio?
How much does it rain in September?
What is the average length of the day in September in San Antonio?
When is the sunrise / sunset in September?
How many hours of sunshine does San Antonio have in September?
How high is the UV index in September?
Average temperature in September
San Antonio, Paraguay
- Average high temperature in September: 27.3°C
The warmest month (with the highest average high temperature) is January (34°C).
The month with the lowest average high temperature is July (21.2°C).
- Average low temperature in September: 15.9°C
The month with the highest average low temperature is January (23.3°C).
The coldest month (with the lowest average low temperature) is July (12.5°C).
Average pressure in September
San Antonio, Paraguay
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is July (1017.3mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in September
San Antonio, Paraguay
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is August (13km/h).
The calmest month (with the lowest average wind speed) is March (9.4km/h).
Average humidity in September
San Antonio, Paraguay
- Average humidity in September: 69%
The months with the highest relative humidity are May and June (84%).
The month with the lowest relative humidity is January (67%).
Average rainfall in September
San Antonio, Paraguay
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is November (109mm).
The driest month (with the least rainfall) is August (18mm).
Average rainfall days in September
San Antonio, Paraguay
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is January (16.7 days).
The month with the least rainy days is August (5.8 days).
Average daylight in September /
Average sunshine in September
San Antonio, Paraguay
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is November (Average sunshine: 10h and 30min).
The month with the least sunshine is May (Average sunshine: 7h and 0min).
Average sunshine days in September
San Antonio, Paraguay
- Average sunshine days in September: 19.2 days
The month with the most sunshine days is August (23.8 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in September
San Antonio, Paraguay
- Average UV index in September: 6
The months with the highest UV index are January, February, October and December (UV index 7).
The month with the lowest UV index is May (UV index 4).
Average cloud cover in September
San Antonio, Paraguay
- Average cloud cover in September: 28
The month with the most cloud cover is May (Cloud cover 46).
The month with the least cloud cover is November (Cloud cover 26).
Average visibility in September
San Antonio, Paraguay
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, July, August, September, October, November and December (9km).
The months with the lowest visibility are May and June (8km).
