Kahului Beach (Kanaha)

Kanaha Beach Park (Kahului Beach) has a moderate bacteria risk rating compared to Maui's other beaches. The area is affected by proximity to Kahului Harbor, several stream mouths draining central Maui's agricultural and residential areas, and relatively limited ocean flushing in the bay compared to more exposed coastlines.

The DOH has issued advisories for parts of this area in the past, particularly after significant rainfall. Under dry, normal conditions, water quality is generally acceptable for wind sports and casual wading, but it is not among Maui's cleanest beaches. If you're looking for the best swimming water quality on Maui, the south and west shores (Kamaole, Wailea, Napili, Kapalua) are consistently better choices.

Based on: DOH testing data, proximity to harbor and stream mouths, central valley runoff risk

Kanaha Beach Park is Maui's most popular wind sports destination and one of the few world-class kitesurfing and windsurfing venues in Hawaii. The consistent Maui trade winds funnel through the gap between Haleakalā and the West Maui Mountains directly onto this beach, creating ideal conditions for wind sports.

The park is about 5 minutes from Kahului Airport (OGG), making it a popular first stop for wind sports enthusiasts arriving on the island. It's a long, wide sandy beach with full facilities — parking, restrooms, picnic tables, and shaded pavilions. The beach is open to the public and enjoyed by locals for picnics, kite flying, and walking as well as water sports.

Kanaha Wildlife Sanctuary: Adjacent to the beach is a protected wetland sanctuary for Hawaii's endangered nesting birds, including the Hawaiian stilt (aeʻo) and Hawaiian coot (ʻalae keʻokeʻo). Respect the protected areas — dogs must be leashed and disturbance of nesting birds is prohibited.

Swimming: Swimming is possible but the strong trade winds create choppy, sometimes rough conditions that make it less enjoyable than Maui's calmer south-side beaches. Best for casual wading or quick dips rather than extended swimming sessions.

• Wind conditions. Kahului trades can gust to 30+ mph in the afternoon. While exciting for kitesurfers, these conditions create significant chop and whitecaps for swimmers.
• Harbor proximity. The commercial harbor area to the east is not suitable for swimming. Stick to the Kanaha Beach Park area, west of the harbor entrance.
• Stream mouths after rain. Several small streams drain into Kahului Bay. After heavy rain, stay away from any visible brown plume of water entering the ocean.
• Kitesurfer activity. The beach is heavily used by kitesurfers and windsurfers. Swimmers should stay well away from launch and landing areas where equipment can cause injury.
• Shallow reef areas. Some sections of the beach near the wildlife sanctuary have shallow reef. Be aware of your depth, especially at lower tides.