September weather forecastAsuncion, Paraguay

September
Weather in September
September steps into Asuncion embracing the traits of spring with temperatures elevating to 27.6°C (81.7°F). The month gets slightly warmer than August and creates a noticeable oscillation in the weather pattern. A slight increase in the number of rainfall days can also be noticed, signaling a shift towards wetter conditions. Stepping into the latter part of the year, September introduces warmer days and increased moisture in the air.Temperature
Asuncion's entry into September measures an average high-temperature of a still warm 27.6°C (81.7°F), closely parallel to the preceding month. Asuncion's nights in September cool down to an average low-temperature of 16°C (60.8°F).Heat index
In September, the average heat index is evaluated at a tropical 30°C (86°F). Constant activity during exposure could result in a state of weariness and possibly heat cramps.It is important to note that the heat index values are for shaded areas and light wind scenarios. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant 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 68%.Rainfall
In Asuncion, in September, during 8.9 rainfall days, 34mm (1.34") of precipitation is typically accumulated. In Asuncion, during the entire year, the rain falls for 145.4 days and collects up to 796mm (31.34") of precipitation.Daylight
The average length of the day in September in Asuncion is 11h and 58min.On the first day of the month, sunrise is at 06:01 and sunset at 17:38. On the last day of September, in Asuncion, sunrise is at 05:30 and sunset at 17:49 -04.
Sunshine
In September, the average sunshine is 8.7h.UV index
In Asuncion, Paraguay, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 6 in September transforms into this advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Asuncion, Paraguay
- Average high temperature in September: 27.6°C
The warmest month (with the highest average high temperature) is January (34.1°C).
The month with the lowest average high temperature is July (21.3°C).
- Average low temperature in September: 16°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 (12.6°C).
Average pressure in September
Asuncion, Paraguay
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is July (1017.2mbar).
The month with the lowest atmospheric pressure is December (1007.7mbar).
Average wind speed in September
Asuncion, Paraguay
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is August (12.6km/h).
The calmest month (with the lowest average wind speed) is March (9.2km/h).
Average humidity in September
Asuncion, Paraguay
- Average humidity in September: 68%
The month with the highest relative humidity is May (84%).
The month with the lowest relative humidity is January (66%).
Average rainfall in September
Asuncion, Paraguay
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is November (97mm).
The driest month (with the least rainfall) is August (19mm).
Average rainfall days in September
Asuncion, Paraguay
- Average rainfall days in September: 8.9 days
The month with the highest number of rainy days is January (15.8 days).
The month with the least rainy days is August (6.8 days).
Average daylight in September /
Average sunshine in September
Asuncion, 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 42min
The month with the most sunshine is November (Average sunshine: 10h and 36min).
The month with the least sunshine is May (Average sunshine: 7h and 0min).
Average sunshine days in September
Asuncion, Paraguay
- Average sunshine days in September: 19.5 days
The month with the most sunshine days is August (23.1 days).
The month with the least sunshine days is February (11.4 days).
Average UV index in September
Asuncion, Paraguay
- Average UV index in September: 6
The months with the highest UV index are January, February, March, October and December (UV index 7).
The month with the lowest UV index is May (UV index 4).
Average cloud cover in September
Asuncion, Paraguay
- Average cloud cover in September: 27
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
Asuncion, 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).





