September in Asuncion sees daytime temperatures around 29°C (84°F) and lows of 16°C (61°F) at night. With around 115 mm (4.5 in) of rainfall expected, it's worth packing a rain jacket.
If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Asuncion.
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Pick a month to see the average temperature, rainfall and sunshine in Asuncion - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Asuncion typically stay consistent throughout September, with daily highs averaging around 29°C (84°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 18°C (64°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Asuncion spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 50 years of weather observations in Asuncion between 1976 and 2026, these are the recorded extremes.
Find out more about the weather in Paraguay and which places have the best travel conditions in this month. See all of Paraguay in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Asuncion climate overview or explore weather in Paraguay.
Where to go in September - average daytime high across popular destinations.
San Bernardino
28°C (82°F) Areguá28°C (82°F) Asuncion29°C (84°F) Luque28°C (82°F) Ybycuí
27°C (81°F) Villarrica28°C (82°F) Ciudad del Este
28°C (82°F) Encarnación26°C (79°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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