Oranjestad weather in September
September in Oranjestad: hot, a little rain, with clean air — an excellent time to visit.
#9 of 12 months in Oranjestad · #420 of 897 destinations to visit in September · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Oranjestad in September
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Oranjestad climate normals — September
| Daytime high | 30°C / 86°F | 🥵 hot |
|---|---|---|
| Nighttime low | 28°C / 82°F | |
| Rainfall | 53 mm / 2.1 in | 🌦 some rain |
| Rainy days | 9 days | |
| Humidity | 78% | 💦 very humid |
| Dew point | 25°C / 76°F | |
| Sunshine | 11 h/day | |
| Daylight | 12.2 h | |
| Wind | 32 km/h / 20 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Oranjestad in September — FAQ
- Is September a good time to visit Oranjestad?
- September in Oranjestad: hot, a little rain, with clean air — an excellent time to visit. It ranks #9 of 12 months for Oranjestad on SeasonMap's comfort score (84/100).
- What is the weather like in Oranjestad in September?
- In September, Oranjestad averages a daily high of 29.8°C and a low of 27.6°C, with about 53.2 mm of rain over roughly 8.6 rainy days.
- What is the air quality in Oranjestad in September?
- Oranjestad has a mean US Air Quality Index of about 38 in September.