10 Ways to Volunteer for Earth Day on O‘ahu

From the North Shore to East O‘ahu and the Windward side, here are ten volunteer opportunities to get you outside this weekend.

Volunteer day



Central O‘ahu​

Kūkaniloko Community Clean-Up


Pull out invasive grass and weeds at the site of the Kūkaniloko Birthstones State Monument, where royalty would give birth. Bring hats, gloves, insect repellent, water in a reusable bottle and yard tools. Do know that you will need to park along the shoulders of Kamehameha Highway and the nearest restroom is a quarter of a mile down the road.

  • Saturday, April 20

  • 9 a.m. to noon

  • Kūkaniloko Birthstones State Monument, at the intersection of Kamehameha Highway and Whitmore Avenue, Wahiawā

  • Find more information at kukaniloko.weebly.com or email hccwahiawa@gmail.com


East O‘ahu​

Beach Clean Up: Save Our Coral Reefs!


Sea Life Park is hosting a Saturday beach cleanup at Kaupo Bay. The first 50 volunteers (with military or kamaʻāina I.D.) to check in by 8:30 a.m. receive free admission to the park later that day. Other participants receive 50 percent off admission rates to the park, where family-friendly programs and Earth Day exhibits will be up and running until 3 p.m. Please bring your own bucket to store trash, and gloves to keep your family's hands protected. After you're done cleaning the beach, spend the afternoon visiting marine animals at the park and exploring the playground.

  • Saturday, April 20

  • 8:30 a.m. beach cleanup. Noon to 3 p.m. park activities; meet and check in with park staff at Kaupo Bay (between Makapuʻu and Baby Makapuʻu).

  • Sea Life Park, 41-202 Kalanianaʻole Highway #7, Waimānalo

  • (808) 259-2500

  • sealifepark.com


An Earth Day Easter


Every year, the Earth Day cleanup at Waimānalo Beach Park draws the largest number of volunteers, and this Sunday’s event is expected to have more than 1,500. The cleanup begins at 9 a.m. and spreads out across the beaches of Makapuʻu, Kaupo, Makai Research Pier and Bellows. A free shuttle bus will transport volunteers from the main park to these outlying areas, starting at 9:30 a.m. Be sure to return to the park by 11:30 a.m., for the beach festival featuring live music, food and an Easter egg hunt for the kids.


Mālama Maunalua Community Huki


Pull invasive algae from the waters of Maunalua Bay. Since its start in 2009, Mālama Maunalua has pull more than three million pounds from 26 acres. Arrive early to find parking on Summer Street. Volunteers will be briefed and given water shoes, gloves and bags before making the 10- to 15-minute walk from Kuli‘ou‘ou Beach Park. This was a site for HONOLULU Familyʻs Volunteer Days in 2016 and 2019.

  • Saturday, April 20

  • 9 a.m. to noon

  • Meet at Kuli‘ouou Beach Park, 100 Bay St.

  • RSVP and sign a waiver at malamamaunalua.org



Children's Discovery Forest Volunteer Day


Weed and clean the land around culturally significant plants at this garden in the Honolulu Zoo. Volunteers of all ages can help out then explore the zoo. This was a site for HONOLULU Family's 2018 Volunteer Day. 


Makiki Aloha ‘Āina


Join Hālau Kū Māna to clean up the stream in Makiki. Groups will be stationed at one of four sites to remove trash and invasive plants. The work will be until 11 a.m. followed by music and activities. Wear a long-sleeve shirt and bring gloves and tools.

North Shore

Ka‘ena Point State Park Coastal Restoration and Guided Hike


Clear invasive plants along the footpath in the Mokule‘ia part of the state park. Volunteers will use some tools—trowels, folding saws and more—as they hike the coast and learn about the Laysan Albatross and other natural resources. After a 15-minute briefing, it will be a half-hour hike to the worksite, about two hours of work, a half-hour break for lunch, then another 45-minute hike to the Natural Reserve Area, a 45-minute tour, then a one-and-a-half-hour hike back to the parking.

  • Saturday, April 20

  • 9 a.m. to 3 p.m.

  • Ka‘ena State Park, the end of Farrington Highway past Dillingham Airfield

  • RSVP to conservationconnections.org


Waimea Valley’s Earth Day


Cleanup projects are planned for Waimea Valley on Saturday, where keiki can learn about forest reforestation, invasive species removal, planting and weeding. The volunteer day begins with a Hawaiian oli (chant) and ends with a raffle-prize drawing. Stick around the park after the volunteer activity to enjoy the waterfall and gardens. Waimea Valley—one of the venues for HONOLULU Family’s Volunteer Day—gives kids and parents a chance to remove invasive weeds and help keep the valley beautiful. 

  • Saturday, April 20

  • 8:30 a.m. to 12:45 p.m. (check in at 8 a.m.)

  • Waimea Valley, 59-864 Kamehameha Highway

  • (808) 638-7766

  • waimeavalley.com


West O‘ahu​

Mālama Tree Crew at Pālehua


Water, weed and clear debris around new native trees at Mālama Learning Center site with the Sierra Club Hawai‘i. The Akapu Enclosure also is a habitat for endangered ‘elepaio. Tools, gloves and equipment will be provided. Meet at Makakilo Community Park.

  • Sunday, April 20

  • 8:45 a.m. to noon

  • 92-1120 Makakilo Drive, Kapolei

  • (808) 278-6650, RSVP and sign a waiver at act.sierraclub.org


Windward O‘ahu​

Hāmākua Marsh


Plant and maintain the native forest in the watershed of Hāmākua Marsh, which is home to four species of native endangered waterbirds. Tools and gloves will be provided by people should bring reusable water bottles, covered shoes and sunscreen.