Description - Wa'ahila Ridge State Recreation Area is located on a ridge in the foothills of the Koolau Range, north of Honolulu.
- Wa'ahila Ridge State Recreation Area lies within a Norfolk Island pine forest and provides excellent views of the Manoa and Palolo valleys. Picnic facilities, including a picnic pavilion, as well as restrooms, are maintained here. A trailhead for the Honolulu Watershed Forest Reserve is accessible from the park.
Wa'ahila Ridge Trail begins here in ironwood and guava trees. It traverses alternately between open ridge and forest as it gradually ascends up the ridge between Manoa and Palolo Valleys. It offers spectular views of Manoa, Palolo, Honolulu and the Ko'olau Range. The trail covers 2.4 miles with options to link to other trails.
Recreation - This site is an excellent place for a family picnic with scenic overlooks and hiking available.
Climate - The climate is pleasantly mild on O'ahu throughout the year. Temperatures vary annually between 60 and 90 degrees F. Summer temperatures range from 68 to 82 degrees F with the water usually near 80 degrees. Winter temperatures vary from 61 to 80 degrees F with the water temperature close to 77 degrees. More rainfall occurs during the winter than other seasons of the year and most of it falls on the northeastern or windward portion of the island.
Wa'ahila Ridge State Recreation Area lies north of Honolulu and directly behind the northwestern corner of the University of Hawaii campus. It is accessible from Waialae Avenue via St. Louis Drive and Peter Street at the end of Ruth Place.