🌤 Weather at Keaīwa Heiau State Recreation Area by season
| Spring | Summer | Fall | Winter |
|---|---|---|---|
| 65–81 °F | 71–84 °F | 69–84 °F | 64–78 °F |
Each range runs from the coldest monthly average low to the warmest monthly average high in that season (1991-2020 climate normals), measured at Waihee 837.5, 5 mi away, elevation 108 ft. Conditions at the park can differ from the station, especially where elevation differs — check a forecast before you go.
Overview
Keaīwa Heiau State Recreation Area sits high above Pearl Harbor in the ʻAiea Heights neighborhood of Oahu, combining ancient Hawaiian spiritual heritage with lush tropical forest hiking and stunning panoramic views. The park is named for the Keaīwa Heiau, a centuries-old healing temple where kahuna lapaʻau (traditional Hawaiian medical practitioners) used medicinal plants and spiritual practices to treat the sick. Surrounding the heiau, a remarkable collection of native and Polynesian-introduced medicinal plants continues to thrive, serving as a living testament to the sophistication of Hawaiian traditional medicine.
Beyond its cultural significance, the recreation area serves as the trailhead for the popular ʻAiea Loop Trail, a 4.8-mile loop that winds through a dense Norfolk pine and eucalyptus forest canopy. The trail offers breathtaking views of Pearl Harbor, Diamond Head, and the Koʻolau Mountain Range, making it one of the most rewarding moderate hikes on Oahu for both residents and visitors.
Recreation
The ʻAiea Loop Trail is the centerpiece of outdoor recreation at Keaīwa Heiau. This well-maintained 4.8-mile loop trail climbs through diverse forest environments, passing groves of Norfolk pine, ironwood, eucalyptus, and native Hawaiian vegetation. The trail offers spectacular viewpoints overlooking Pearl Harbor, the H-3 freeway corridor, and Honolulu’s urban landscape against the dramatic backdrop of the Koʻolau Mountains. The hike is rated moderate with approximately 900 feet of elevation gain. The park also features picnic pavilions, restrooms, and a campground that can be reserved through the Hawaii DLNR.
Location & Access
Keaīwa Heiau State Recreation Area is located at the end of ʻAiea Heights Drive in ʻAiea, Oahu. From H-1 West, take the ʻAiea/Stadium exit and follow ʻAiea Heights Drive approximately 3 miles uphill to the park entrance. The park is open daily from 7:00 AM to 7:45 PM (April through Labor Day) and 7:00 AM to 6:45 PM (rest of year). Gate hours are strictly enforced. Free parking is available at the trailhead.
Frequently Asked Questions
What is the Keaīwa Heiau?
The Keaīwa Heiau is an ancient Hawaiian healing temple where kahuna lapaʻau practiced traditional medicine. The heiau grounds contain many medicinal plants used in traditional Hawaiian healing, including noni, kukui, and ti plants. Visitors are asked to treat the heiau with respect as a sacred cultural site.
How difficult is the ʻAiea Loop Trail?
The trail is rated moderate. It covers 4.8 miles with approximately 900 feet of elevation gain. Allow 2 to 3 hours for the full loop. The trail can be muddy after rain, so appropriate footwear is recommended.
Is camping available?
Yes, tent camping is available with a permit from the Hawaii DLNR Division of State Parks. The campground is closed on Wednesdays and Thursdays for maintenance.
Wildlife & Nature
Kea’iwa Heiau SRA — preserves a 15th-century Hawaiian healing temple (heiau) where kahuna lapa’au (medical priests) practiced traditional medicine using native plants. Many of the medicinal plants still grow in the surrounding forest. The park’s native and introduced forest supports ‘apapane and ‘amakihi.
Nearby Attractions
Aiea — adjacent. Aiea Loop Trail — 4.8-mile loop. Pearl Harbor — 3 miles south. Honolulu — 10 miles east.
More parks nearby: ʻAiea Bay State Recreation Area is a short drive away, while Queen Emma Summer Palace lies a short drive away.
🐾 Dogs & Pets at Keaīwa Heiau State Recreation Area
- Pets allowed? statewide rule
- Pets are heavily restricted in Hawaii state parks: they are not permitted in pavilions, swimming areas, campgrounds, lodges, on beaches or wherever posted, and only limited areas allow them.
- Leash rule statewide rule
- Where permitted, pets must be crated, caged, on a 6-foot or shorter leash, or otherwise under physical restrictive control at all times
- Beaches & swim areas statewide rule
- Pets are not permitted on beaches or in swimming areas statewide
- Cabins & lodging statewide rule
- Pets are not permitted in lodges or campgrounds, so overnight accommodations are effectively pet-free
- Statewide exceptions statewide rule
- Rules vary by park and posting; effectively day-use only in the limited unposted areas where pets are tolerated
Are dogs allowed at Keaīwa Heiau State Recreation Area?
Pets are heavily restricted in Hawaii state parks: they are not permitted in pavilions, swimming areas, campgrounds, lodges, on beaches or wherever posted, and only limited areas allow them. Individual parks can post stricter rules — check signage on arrival.
Rules verified July 2026 via dlnr.hawaii.gov. More: Hawaii state parks guide · Dog rules in all 50 states compared
Park Location
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