Spring begins with warming temperatures and generally dry conditions, making it attractive for nature tourism. Flowering and agricultural activities start to pick up across rural areas.
Greg Schechter from San Francisco, USA CC BY-SA 4.0 Wikimedia Commons
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Average temperature across Paraguay in September.
Humidity climbs back in September and the air feels heavier by midday; highs move into the mid-20s to low 30s°C and showers begin to arrive more often. The city’s outdoor cafés get busier on mornings and evenings as locals anticipate the coming summer; by late month short-lived storms will sometimes interrupt travel. Bring light, breathable clothes and an umbrella - mornings are great for riverside walks before thunderstorms develop.
September’s humidity increases and days grow hotter with regular afternoon showers developing; daytime temperatures reach the high 20s°C. River islands and picnic spots see more local visitors as the weather swings between heavy sun and cloudbursts. Keep waterproof bags for electronics when visiting the Itaipú viewpoint or natural cascades, and be ready for sudden sheltering under trees or kiosks during storms.
Encarnación, Jesuit Missions
September’s afternoons grow more humid and warmer, often entering the high-20s°C, and short showers begin reappearing toward the end of the month. River beaches start attracting more locals again as the climate swings toward summer; plan outdoor activities in the morning to avoid developing storms. Birdwatching around river margins becomes lively as migratory species move through.
Filadelfia, Boquerón
September’s heat returns with rising humidity and sporadic showers toward month’s end; daytime temperatures climb into the high 20s and low 30s°C. The landscape becomes greener and wildlife breeding activity is visible around newly forming pools. Travelers should watch for rapidly changing road conditions after sudden storms and plan for early starts before midday heat.
Bahía Negra, Defensores del Chaco edge
September becomes noticeably warmer and showers begin to appear, often in the form of late-afternoon thunderstorms that quickly reshape local tracks. Daytime highs see the low 30s°C and humidity climbs; animals start spreading out as ephemeral pools form. Travelers should be prepared for switchable plans - sometimes the best viewing comes right after a short, heavy shower.
There are no major festivals or events in Paraguay during September to be aware of.
See how September compares with the rest of the year, then read the full guide.