Guayaquil weather in September
September in Guayaquil: warm, a little rain, with clean air — a great time to visit.
#3 of 12 months in Guayaquil · #538 of 897 destinations to visit in September · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Guayaquil in September
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Guayaquil climate normals — September
| Daytime high | 28°C / 83°F | 🌤 warm |
|---|---|---|
| Nighttime low | 21°C / 70°F | |
| Rainfall | 66 mm / 2.6 in | 🌦 some rain |
| Rainy days | 16 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 20°C / 68°F | |
| Sunshine | 9.6 h/day | |
| Daylight | 12.1 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Guayaquil in September — FAQ
- Is September a good time to visit Guayaquil?
- September in Guayaquil: warm, a little rain, with clean air — a great time to visit. It ranks #3 of 12 months for Guayaquil on SeasonMap's comfort score (79/100).
- What is the weather like in Guayaquil in September?
- In September, Guayaquil averages a daily high of 28.3°C and a low of 20.9°C, with about 65.6 mm of rain over roughly 15.8 rainy days.
- What is the air quality in Guayaquil in September?
- Guayaquil has a mean US Air Quality Index of about 39 in September.