Copán weather in September
September in Copán: warm, soaked, with clean air — a gamble, with 28 rainy days.
#12 of 12 months in Copán · #779 of 897 destinations to visit in September · comfort 61/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Copán in September
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Copán climate normals — September
| Daytime high | 28°C / 82°F | 🌤 warm |
|---|---|---|
| Nighttime low | 21°C / 69°F | |
| Rainfall | 292 mm / 11.5 in | ⛈ soaked |
| Rainy days | 28 days | |
| Humidity | 90% | 💦 very humid |
| Dew point | 21°C / 71°F | |
| Sunshine | 9.7 h/day | |
| Daylight | 12.2 h | |
| Wind | 10 km/h / 6 mph | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Copán in September — FAQ
- Is September a good time to visit Copán?
- September in Copán: warm, soaked, with clean air — a gamble, with 28 rainy days. It ranks #12 of 12 months for Copán on SeasonMap's comfort score (61/100).
- What is the weather like in Copán in September?
- In September, Copán averages a daily high of 27.6°C and a low of 20.6°C, with about 291.7 mm of rain over roughly 28 rainy days.
- What is the air quality in Copán in September?
- Copán has a mean US Air Quality Index of about 32 in September.