Trancoso weather in September
September in Trancoso: warm, a little rain, with clean air — an excellent time to visit.
#3 of 12 months in Trancoso · #224 of 897 destinations to visit in September · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Trancoso in September
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Trancoso climate normals — September
| Daytime high | 26°C / 79°F | 🌤 warm |
|---|---|---|
| Nighttime low | 21°C / 71°F | |
| Rainfall | 51 mm / 2 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 20°C / 67°F | |
| Sunshine | 9.8 h/day | |
| Daylight | 12 h | |
| Wind | 15 km/h / 10 mph | |
| Air quality (US AQI) | 29 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Trancoso in September — FAQ
- Is September a good time to visit Trancoso?
- September in Trancoso: warm, a little rain, with clean air — an excellent time to visit. It ranks #3 of 12 months for Trancoso on SeasonMap's comfort score (89/100).
- What is the weather like in Trancoso in September?
- In September, Trancoso averages a daily high of 26.1°C and a low of 21.4°C, with about 50.9 mm of rain over roughly 11.4 rainy days.
- What is the air quality in Trancoso in September?
- Trancoso has a mean US Air Quality Index of about 29 in September.