Operating Hours & Seasons

A saguaro stands surrounded by a carpet of yellow chinchweed flowers, with majestic volcanic mountains in the background.
Monsoon rains bring beautiful carpets of flowers but may also cause flash flooding. Make sure to check the weather and with the visitor center about current conditions.

NPS Photo/Cate Blanch

Monument Hours

Organ Pipe Cactus National Monument is open year-round, 24 hours a day. This allows visitors the pleasure of enjoying a beautiful sunrise at the beginning of the day and spectacular night sky viewing at night anytime!

Roads and Trails

All roads and trails in the monument remain open unless specified in the alerts at the top of each page or on the Alerts and Conditions page. During monsoon summer (mid-July through September), roads may be closed during the day for visitor safety because of flash flooding. Call 520-387-6849, ext 7302 or check with a ranger at the visitor center when you arrive to get current weather and road information.

Kris Eggle Visitor Center

The Kris Eggle Visitor Center is open 7 days a week from 8:00 am to 4:00 pm, but is closed to observe the Thanksgiving and Christmas holidays. Entrance fees are paid at the visitor center or online at Recreation.gov.

International Travel

For visitors interested in international travel into Mexico, the US-Mexico Border hours are 6 am to 8 pm daily, and passports and Mexican car insurance is needed. For more information about international travel, please visit the International Travel page.


Organ Pipe Cactus has no seasonal closures. The monument and campgrounds are open year-round, though monsoon rains may require certain roads are closed during a portion of the day for visitor safety. Each beautiful season offers a unique, spectacular experience in the Sonoran Desert for visitors to enjoy. Learn more about what to expect and experience during each season on our weather page.



Last updated: May 18, 2024

Park footer

Contact Info

Mailing Address:

10 Organ Pipe Drive
Ajo, AZ 85321



Contact Us