Carlsbad Caverns National Park weather in September
September in Carlsbad Caverns National Park: hot, dry, with clean air — an excellent time to visit.
#7 of 12 months in Carlsbad Caverns National Park · #301 of 604 destinations to visit in September · comfort 80/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Carlsbad Caverns National Park climate normals — September
| Daytime high | 30°C / 86°F | 🥵 hot |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 24 mm / 1 in | ☀️ dry |
| Rainy days | 6 days | |
| Humidity | 46% | 🍃 comfortable |
| Dew point | 10°C / 49°F | |
| Sunshine | 11.2 h/day | |
| Daylight | 12.4 h | |
| Wind | 17 km/h / 11 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 Carlsbad Caverns National Park?
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Carlsbad Caverns National Park in September — FAQ
- Is September a good time to visit Carlsbad Caverns National Park?
- September in Carlsbad Caverns National Park: hot, dry, with clean air — an excellent time to visit. It ranks #7 of 12 months for Carlsbad Caverns National Park on SeasonMap's comfort score (80/100).
- What is the weather like in Carlsbad Caverns National Park in September?
- In September, Carlsbad Caverns National Park averages a daily high of 30.2°C and a low of 17.6°C, with about 24.4 mm of rain over roughly 6 rainy days.
- What is the air quality in Carlsbad Caverns National Park in September?
- Carlsbad Caverns National Park has a mean US Air Quality Index of about 37 in September.