Big Bend National Park in September
September at Big Bend National Park averages a daytime high near 86°F and an overnight low around 63°F, with about 1.7" of precipitation. Visitation runs about 0.6× the park's average month, which makes September a quiet month here.
- Average low
- 63°F
- Average high
- 86°F
Range across the year: 37°F to 94°F
- Precipitation
- 1.7 in
- Daylight
- 12.2 hours
Roughly 5% of the park's yearly visitors come in September: about 22,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes September the 9th-busiest of the park's twelve months, sitting between the March peak (2×) and the August low (0.4×).
September is our recommended month at Big Bend: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 75°F is a comfortable range for hiking and being outdoors all day. These figures are 1991–2020 NOAA climate normals from the nearest station, about 2.5 miles from the park.
Because June, July and August together draw about 12% of annual visitors, choosing September instead steps outside that summer crush — the single biggest lever on how crowded the park feels.
You'll have about 12.2 hours of daylight in September to explore — between the 10.1-hour midwinter low and the 13.9-hour summer high.
Park-wide, 2025 drew 568,104 recreation visits, up 1.2% from 561,458 in 2024.
Across the past decade overall visitation has risen about 29.3%, so a September visit is likely to feel busier than it did a few years ago.
How September compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| August | 91°F / 69°F | 0.4× Very quiet | 64 Good |
| September | 86°F / 63°F | 0.6× Quiet | 78 Excellent |
| October | 80°F / 55°F | 1.0× Average | 75 Excellent |
All twelve months at Big Bend, with the best time to visit.
Things to do at Big Bend in September
The National Park Service tags 15 Big Bend activities for fall. Here are 8 of them. Each links to the park's own page for it.
- Bike Big Bend
- Explore Backcountry Roads
- Primitive Roadside Campsites · reservation required
- Backpacking Big Bend · reservation required
- Big Bend Junior Rangers
- Birdwatch at Rio Grande Village Nature Trail · 15-45 minutes
- Hike the Lost Mine Trail
- See the Rio Grande
Frequently Asked Questions
September averages a daytime high near 86°F and an overnight low around 63°F at Big Bend National Park, with about 1.7 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 2.5 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is quiet at Big Bend National Park (about 0.6× the average month). Our best-time score rates it "Excellent" at 78/100. September is our recommended month for this park.
The busiest month is March and the quietest is August. September sits at about 0.6× the park's average, or 5% of annual visitation.
A typical September sees about 22,000 recreation visits at Big Bend National Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Big Bend in September
Booking a September trip to Big Bend National Park? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Big Bend
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
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See the full ranking of the best national parks to visit in September.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.