Kaʻanapali, Wailea, Kapalua, and Napili — bacteria risk, DOH advisories, and swim conditions at every major Maui resort beach.
Kaʻanapali Beach fronts the Hyatt Regency, Westin, Marriott, Sheraton Maui, and several condo resorts along a 3-mile stretch of West Maui coastline. The leeward location provides strong offshore flushing and generally low bacteria readings under normal conditions. The beach has had occasional DOH advisories near the Kaʻanapali Beach Hotel end (north side) after heavy West Maui Mountain rain events.
The central and southern portions of Kaʻanapali (fronting the Marriott and Hyatt) tend to have the most consistent water quality. The area near Black Rock (Puʻu Kekaʻa) is a popular snorkeling spot with good water clarity and generally good quality.
Resorts: Hyatt Regency Maui, Westin Maui, Marriott's Maui Ocean Club, Sheraton Maui, Kaʻanapali Beach Hotel
Wailea Beach, fronting the Four Seasons and Grand Wailea, consistently has among the best water quality on Maui. The South Maui location receives less rainfall than West or East Maui, meaning fewer runoff events. The beach has a low historical bacteria reading and infrequent DOH advisories. The offshore coral and lava landscape promotes good water circulation.
Resorts: Four Seasons Maui at Wailea, Grand Wailea, Andaz Maui at Wailea
Just south of Wailea, Polo Beach (fronting the Fairmont Kea Lani) and Palauea Beach are among the least-developed resort beaches on Maui. Low upland runoff potential and strong offshore flushing give these beaches excellent water quality. Palauea is sometimes called 'White Rock Beach' and tends to be quieter than Wailea Beach.
Resorts: Fairmont Kea Lani
Kapalua Bay is widely regarded as having the best water quality of any major Maui resort beach. The sheltered crescent bay has minimal upland development in its watershed, strong natural flushing, and consistently low bacteria readings. It is a Marine Life Conservation District (MLCD), which limits fishing and anchor damage, contributing to cleaner water. DOH advisories at Kapalua Bay are rare.
Resorts: Ritz-Carlton Kapalua, Montage Kapalua Bay
Fleming Beach is north of the Kapalua resort core and has good water quality under normal conditions. However, it can experience stronger surf and more runoff from the surrounding hills. Water quality is generally good but can be affected after rain. This beach is not directly fronted by a resort, making it a public beach with resort access nearby.
Napili Bay has generally very good water quality with low bacteria readings. The small crescent bay is sheltered and has minimal upstream development. One consideration specific to Napili: the bay can experience higher concentrations of box jellyfish during their monthly cycle (typically 8–12 days after the full moon). This is a marine hazard, not a water quality issue, but worth noting when planning your swim.
Resorts: Napili Kai Beach Resort, Napili Shores, Outrigger Napili Shores
Even resort beaches in Maui can experience elevated bacteria levels after heavy rain. The DOH recommends waiting at least 72 hours after heavy rain before swimming. West Maui mountains can generate intense rain events that affect Kaʻanapali and Napili. South Maui (Wailea, Kapalua) is generally drier and recovers faster.
| Beach Area | Risk Level | DOH Advisories |
|---|---|---|
| Kapalua Bay | Very Low | Rare |
| Wailea Beach | Low | Infrequent |
| Napili Bay | Low | Infrequent |
| Kaʻanapali (central) | Low-Moderate | Occasional |
| Kaʻanapali (north) | Moderate | After rain |
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⚠️ Important Disclaimer
Safe to Swim Hawaii is an independent passion project — not affiliated with the Hawaii Department of Health or any government agency. Water quality ratings are estimates based on publicly available testing data and geographic analysis. They are not real-time measurements and may not reflect current conditions.
Always verify current water quality with the Hawaii Department of Health Clean Water Branch before entering the water.
When in doubt, don't go out.