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Agua Caliente Spring near Arivaca Junction flows at 90 degrees Fahrenheit at 3,882 feet elevation, emerging 23.6 degrees above ambient in Pima County. This roadside-accessible spring lies in Arizona's semi-desert grasslands within reach of Tucson, offering genuinely thermal waters in a high desert setting.
Located just 24.5 meters from the nearest road, the spring sits in rolling grassland terrain characteristic of southern Arizona's transition zone. The landscape features scattered oak and juniper, with mountain views toward the Coronado National Forest and surrounding basin-and-range topography creating a scenic approach.
History of Agua Caliente Spring
The spring's thermal output results from deep groundwater circulation through the complex geology of southern Arizona, where basement rocks conduct heat from depth. The name Agua Caliente reflects Spanish recognition of these warm waters in a region of significant geothermal gradient.
Access is straightforward from nearby roads in the grassland country. The spring remains accessible year-round, with cooler months offering more comfortable soaking. Be prepared for dry conditions and minimal shade; bring water and sun protection for any extended visit.
Is Agua Caliente Spring worth visiting?
Best for
- Warm-water soaking
- Easy day trips
- Overnight camping trips
Agua Caliente Spring is well suited for warm-water soaking and easy day trips.
Annual Precip: 12.8 in
Annual Snow: 1.4 in
January
Air 50°F · Water 90°F · +41° contrast
December
Air 49°F · Water 90°F · +41° contrast
February
Air 52°F · Water 90°F · +38° contrast
January offers 34°F more contrast than June
Overview
Kent Springs Cabin is located in the Madera Canyon Recreation Area, 15 miles southeast of Green Valley, Arizona in the Coronado National Forest. Located in an area boasting unique natural features and historical sites, the secluded and private cabin is an ideal location for guests seeking relaxation and recreation although less than an hour from Tucson.Recreation
Madera Canyon hiking trails are well-known throughout the Southwest, and vary from paved, accessible trails and gentle wa...
Reserve on Recreation.gov →
Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Sun protection
Limited shade in warm climate
Camping gear
Nearby camping at Kent Springs Cabin
Trash bag
Pack out what you pack in
0 miles from Arivaca Junction, AZ
USGS Quad: MOUNT WRIGHTSON 15 · PP 492: 20.0 · NOAA: 1.0 · AMS Map: NOGALES
What is the water temperature at Agua Caliente Spring?
Agua Caliente Spring has a water temperature of 90°F (32°C). This is a warm thermal spring.
Where is Agua Caliente Spring located?
Agua Caliente Spring is located in Pima County, Arizona at 3,882 feet elevation, near Arivaca Junction. Coordinates: 31.6950°N, 110.9630°W.
How do I get to Agua Caliente Spring?
Agua Caliente Spring has Roadside road access (80 ft from the road).
Can I camp near Agua Caliente Spring?
Yes, Kent Springs Cabin is located nearby (5.5 miles away).
Is it safe to soak at Agua Caliente Spring?
Agua Caliente Spring is generally safe for soaking at its recorded temperature. Access may be on private land or unconfirmed — verify current conditions before visiting. Always tell someone your plans before visiting remote hot springs.
Is Agua Caliente Spring crowded?
Agua Caliente Spring is accessible from a paved road, making it easy to reach. Weekends and holidays may be busier — consider visiting on a weekday for a quieter experience.
What should I bring to Agua Caliente Spring?
Essentials for Agua Caliente Spring: swimsuit, towel, water bottle, sun protection (hat, sunscreen), camping gear, a trash bag to pack out what you pack in.