Asunción weather in September
September in Asunción: hot, rainy — an excellent time to visit.
#5 of 12 months in Asunción · #282 of 604 destinations to visit in September · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Asunción climate normals — September
| Daytime high | 28°C / 83°F | 🥵 hot |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 80 mm / 3.2 in | 🌧 rainy |
| Rainy days | 7 days | |
| Humidity | 67% | 💧 humid |
| Dew point | 15°C / 58°F | |
| Sunshine | 9.5 h/day | |
| Daylight | 12 h | |
| Wind | 21 km/h / 13 mph | |
| Air quality (US AQI) | 65 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Asunción?
Loading map…
Asunción in September — FAQ
- Is September a good time to visit Asunción?
- September in Asunción: hot, rainy — an excellent time to visit. It ranks #5 of 12 months for Asunción on SeasonMap's comfort score (81/100).
- What is the weather like in Asunción in September?
- In September, Asunción averages a daily high of 28.4°C and a low of 17.7°C, with about 80.4 mm of rain over roughly 6.8 rainy days.
- What is the air quality in Asunción in September?
- Asunción has a mean US Air Quality Index of about 65 in September.