Panajachel weather in September
September in Panajachel: nice, soaked, with very humid — fine if you can take 27 rainy days.
#12 of 12 months in Panajachel · #746 of 897 destinations to visit in September · comfort 65/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
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Panajachel climate normals — September
| Daytime high | 23°C / 73°F | 😎 nice |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Rainfall | 378 mm / 14.9 in | ⛈ soaked |
| Rainy days | 27 days | |
| Humidity | 88% | 💦 very humid |
| Dew point | 18°C / 64°F | |
| Sunshine | 9.3 h/day | |
| Daylight | 12.2 h | |
| Wind | 7 km/h / 5 mph | |
| Air quality (US AQI) | 58 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Panajachel in September — FAQ
- Is September a good time to visit Panajachel?
- September in Panajachel: nice, soaked, with very humid — fine if you can take 27 rainy days. It ranks #12 of 12 months for Panajachel on SeasonMap's comfort score (65/100).
- What is the weather like in Panajachel in September?
- In September, Panajachel averages a daily high of 23°C and a low of 17.7°C, with about 378.1 mm of rain over roughly 26.8 rainy days.
- What is the air quality in Panajachel in September?
- Panajachel has a mean US Air Quality Index of about 58 in September.