Fortaleza weather in September
September in Fortaleza: hot, dry, with clean air — one of the best months to visit.
#2 of 12 months in Fortaleza · #90 of 604 destinations to visit in September · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Fortaleza climate normals — September
| Daytime high | 31°C / 87°F | 🥵 hot |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Feels like (high) | 32°C / 90°F | |
| Rainfall | 4 mm / 0.2 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 70% | 💧 humid |
| Dew point | 21°C / 69°F | |
| Sunshine | 11.1 h/day | |
| Daylight | 12.1 h | |
| Wind | 27 km/h / 17 mph | |
| Air quality (US AQI) | 50 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Fortaleza?
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Fortaleza in September — FAQ
- Is September a good time to visit Fortaleza?
- September in Fortaleza: hot, dry, with clean air — one of the best months to visit. It ranks #2 of 12 months for Fortaleza on SeasonMap's comfort score (89/100).
- What is the weather like in Fortaleza in September?
- In September, Fortaleza averages a daily high of 30.7°C and a low of 24.8°C, with about 4.3 mm of rain over roughly 1 rainy days.
- What is the air quality in Fortaleza in September?
- Fortaleza has a mean US Air Quality Index of about 50 in September.