Designation: National Park & Preserve
Location: Colorado
Open 24/7 year round! There are no timed entries or reservations to visit. The tallest dunes in North America are the centerpiece in a diverse landscape of grasslands, wetlands, forests, alpine lakes, and tundra. Stay on a moonless night to experience countless stars in this International Dark Sky Park!
Temperatures are relatively cool all year at the park elevation 8000 ft. Conditions are most often calm, but winds can arise, especially in spring and during storm fronts. Daytime temperatures feel warmer here year round due to intense high-altitude sunlight, and mid-day summer sand surface temps can be 160 degrees F! Plan to explore the dunes morning or evening during summer. Nights are cool in summer, and frigid in winter. Visit https://nps.gov/grsa/planyourvisit/weather.htm for details
To access the main park area, including the Dunes Parking Lot, Visitor Center, and Pinon Flats Campground, take US 160 to CO 150 from the south, or CO 17 to Lane 6 to CO 150 from the west. The national park is at the north end of CO 150.
The view at the park entrance contrasts giant dunes and snow-capped mountains.
Credit: NPS/Patrick Myers
Rent specially designed sand sleds to slide on the dry sand. Note: cardboard, snow sleds, saucers, and other items don't slide on dry sand.
Credit: NPS/Patrick Myers
Elk are sometimes seen by visitors along the park entrance road or County Lane 6, primarily fall through spring.
Spectacular alpine lakes are part of the backcountry of Great Sand Dunes National Preserve
Credit: NPS/Kris Illenberger
Sand Creek Basin, part of Great Sand Dunes National Preserve, contains lush forests and alpine lakes.
Credit: NPS/Patrick Myers
Fall is a pretty time to visit the park, with great colors and generally nice weather.
Credit: NPS/Patrick Myers
Thursday, Jun 11
Sunny
High: 78.2°F | Low: 47.2°F
Humidity: 26%
Wind: 11.9 mph
Rain Chance: 1%
UV Index: 12
Sunrise: 05:39 AM
Sunset: 08:24 PM
Moon: Waning Crescent (8%)
Visibility: 6 mi
Dew Point: 46.8°F
Cloud Cover: 1%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Friday, Jun 12
Sunny
High: 77.5°F | Low: 44.6°F
Humidity: 28%
Wind: 14.8 mph
Rain Chance: 1%
UV Index: 11.2
Sunrise: 05:39 AM
Sunset: 08:25 PM
Moon: New Moon (3%)
Visibility: 6 mi
Dew Point: 46.7°F
Cloud Cover: 1%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Saturday, Jun 13
Patchy rain nearby
High: 77.6°F | Low: 47.5°F
Humidity: 30%
Wind: 15 mph
Rain Chance: 17%
UV Index: 11.2
Sunrise: 05:39 AM
Sunset: 08:25 PM
Moon: New Moon (1%)
Visibility: 6 mi
Dew Point: 46.8°F
Cloud Cover: 17%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Fire Weather Watch issued June 10 at 7:59PM MDT until June 12 at 8:00PM MDT by NWS Pueblo CO
Effective: Jun 10, 2026 9:59pm
Expires: Jun 11, 2026 2:00pm
...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
223 AND 224...
* AFFECTED AREA...Fire Weather Zones 223 and 224.
* TIMING...From Friday morning through Friday evening.
* WINDS...West 15 to 25 mph with gusts up to 40 mph.
* RELATIVE HUMIDITY...As low as 8 percent.
* IMPACTS...Fires will catch and spread quickly. Exercise
extreme caution with any outdoor burning.
Fire Weather Watch issued June 11 at 1:37AM MDT until June 12 at 8:00PM MDT by NWS Pueblo CO
Effective: Jun 11, 2026 3:37am
Expires: Jun 11, 2026 7:45pm
* AFFECTED AREA...Fire Weather Zones 220, 223 and 224.
* WINDS...West 15 to 30 mph with gusts up to 45 mph.
* RELATIVE HUMIDITY...As low as 8 percent.
* IMPACTS...Fires will catch and spread quickly. Exercise
extreme caution with any outdoor burning.
Red Flag Warning issued June 10 at 7:59PM MDT until June 11 at 8:00PM MDT by NWS Pueblo CO
Effective: Jun 10, 2026 9:59pm
Expires: Jun 11, 2026 2:00pm
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON
THROUGH FRIDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY
FOR FIRE WEATHER ZONES 229 AND 230...
...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
229 AND 230...
* AFFECTED AREA...Fire Weather Zones 229 and 230.
* TIMING...For the Red Flag Warning, from 2 PM to 8 PM MDT
Thursday. For the Fire Weather Watch, from Friday afternoon
through Friday evening.
* WINDS...Thursday, East to southeast 15 to 25 mph with gusts up
to 35 mph. Friday, Southwest 15 to 25 mph with gusts up to 40
mph.
* RELATIVE HUMIDITY...As low as 6 percent.
* IMPACTS...Fires will catch and spread quickly. Exercise
extreme caution with any outdoor burning.
Fire Weather Watch issued June 10 at 7:59PM MDT until June 12 at 7:00PM MDT by NWS Pueblo CO
Effective: Jun 10, 2026 9:59pm
Expires: Jun 11, 2026 2:00pm
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON
THROUGH FRIDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY
FOR FIRE WEATHER ZONES 229 AND 230...
...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
229 AND 230...
* AFFECTED AREA...Fire Weather Zones 229 and 230.
* TIMING...For the Red Flag Warning, from 2 PM to 8 PM MDT
Thursday. For the Fire Weather Watch, from Friday afternoon
through Friday evening.
* WINDS...Thursday, East to southeast 15 to 25 mph with gusts up
to 35 mph. Friday, Southwest 15 to 25 mph with gusts up to 40
mph.
* RELATIVE HUMIDITY...As low as 6 percent.
* IMPACTS...Fires will catch and spread quickly. Exercise
extreme caution with any outdoor burning.
Red Flag Warning issued June 11 at 1:37AM MDT until June 11 at 8:00PM MDT by NWS Pueblo CO
Effective: Jun 11, 2026 3:37am
Expires: Jun 11, 2026 7:45pm
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON
THROUGH FRIDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY
FOR FIRE WEATHER ZONES 229 AND 230...
* AFFECTED AREA...Fire Weather Zones 229 and 230.
* TIMING...For the Red Flag Warning, from 2 PM this afternoon to
8 PM MDT this evening. For the Fire Weather Watch, from Friday
afternoon through Friday evening.
* WINDS...For Thursday, east to southeast 10 to 20 mph with gusts
up to 35 mph. For Friday, west to southwest 15 to 25 mph with
gusts up to 40 mph.
* RELATIVE HUMIDITY...As low as 9 percent.
* IMPACTS...Fires will catch and spread quickly. Exercise
extreme caution with any outdoor burning.
Birders and nature enthusiasts in the San Luis Valley will join others across the Western Hemisphere to participate in Audubon’s longest-running wintertime tradition—the annual Christmas Bird Count (CBC)—at Great Sand Dunes National Park and Preserve on Saturday, Jan. 3, beginning at 7:45 a.m.
Birders of all skill levels are welcome and encouraged to participate. The park also invites residents within this year’s count circle who have bird feeders at home to join the effort.
To participate in the count at Great Sand Dunes, individuals must register and be signed up as volunteers. Interested participants should contact Park Biologist Dewane Mosher at Dewane_Mosher@nps.gov or 719-378-6363. Please leave a message with the names of those in your survey party. Registered volunteers will receive a fee waiver for park entrance on the day of the count.
Volunteers must arrive at the visitor center by 7:45 a.m. on Jan. 3 to complete volunteer paperwork, review safety guidelines, and receive a map of their assigned area along with instructions for submitting count results.
Location: Meet the Visitor Center for orientation and safety briefing
Date: Jan 3, 2026 12:00am to Jan 3, 2026 12:00am
Paid Event
Join us athe visitor center to explore the roles between small mammals such as the kangaroo rat, and its effect on the speciation of sunflowers here at Great Sand Dunes.
Location: Visitor Center Auditorium
Date: May 7, 2026 12:00am to May 7, 2026 12:00am
Paid Event
Explore a variety of topics about Great Sand Dunes. Topics posted at visitor center lobby bulletin board. (20 minutes)
Location: Programs take place on visitor center rear porch, front lobby, or in auditorium. See bulletin board for topics and locations within visitor center.
Date: Jun 13, 2026 12:00am to Oct 10, 2026 12:00am
Paid Event
Hey Kids! Learn more about Great Sand Dunes with a park ranger.
Location: Park at the Amphitheater Parking Lot or walk from the Pinion Flats Campground. Program takes place on Amphitheater stage. AUGUST 1 PROGRAM LOCATED AT SOUTH RAMADA PICNIC AREA
Date: Jun 13, 2026 12:00am to Oct 10, 2026 12:00am
Paid Event
Location: Great Sand Dunes Visitor Center Auditorium
Date: Jun 20, 2026 12:00am to Jun 20, 2026 12:00am
Paid Event
Enjoy an evening of culture and dancing that connect to the Navajo or Dineh culture, one of the 29 affiiliated tribes and pueblos associated with Great Sand Dunes National Park.
Location: Pinon Flats Campground Amphitheater
Date: Jun 20, 2026 12:00am to Jun 20, 2026 12:00am
Paid Event
📍 Physical Address:
Visitor Center
11999 State Highway 150
Mosca, CO 81146
🏤 Mailing Address:
Visitor Center
11999 State Highway 150
Mosca, CO 81146
📞 Voice Phone: (719) 378-6395
📞 Fax Phone: 719-378-6310
✉️ Email: grsa_interpretation@nps.gov