Port of Spain weather in September
September in Port of Spain: sweltering, rainy, with clean air — a good time to visit.
#10 of 12 months in Port of Spain · #474 of 604 destinations to visit in September · comfort 65/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Port of Spain climate normals — September
| Daytime high | 30°C / 85°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 27°C / 80°F | |
| Feels like (high) | 36°C / 97°F | |
| Rainfall | 88 mm / 3.5 in | 🌧 rainy |
| Rainy days | 16 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 24°C / 76°F | |
| Sunshine | 10.8 h/day | |
| Daylight | 12.2 h | |
| Wind | 21 km/h / 13 mph | |
| Air quality (US AQI) | 37 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Port of Spain?
Loading map…
Port of Spain in September — FAQ
- Is September a good time to visit Port of Spain?
- September in Port of Spain: sweltering, rainy, with clean air — a good time to visit. It ranks #10 of 12 months for Port of Spain on SeasonMap's comfort score (65/100).
- What is the weather like in Port of Spain in September?
- In September, Port of Spain averages a daily high of 29.6°C and a low of 26.7°C, with about 88 mm of rain over roughly 16.2 rainy days.
- What is the air quality in Port of Spain in September?
- Port of Spain has a mean US Air Quality Index of about 37 in September.