Water quality guide for beaches near Hawaiʻi cruise ship ports
Hawaiʻi welcomes over a million cruise passengers each year, and many visitors want to spend their limited port time at a beach. The challenge is knowing which beaches are close to port, which have acceptable water quality, and which to avoid after recent rain.
This guide covers the four main cruise ports — Honolulu (Oʻahu), Kahului (Maui), Kona (Big Island), and Nʻawiliwili (Kauaʻi) — with water quality context and practical tips for cruise passengers with limited shore time.
Important: Water quality conditions change daily. The Hawaiʻi Department of Health posts advisories when bacteria levels exceed safe standards. Always check current conditions before entering the water, especially after rain.
Honolulu Harbor (Pier 2) is the most common cruise port in Hawaiʻi. The harbor itself sits in an industrial zone — do not swim near the docks. However, several excellent beaches are a short ride away.
Ala Moana Beach Park — About 2 miles from port (~10 min by taxi). This long, sheltered beach has a protected swimming area and is regularly tested by DOH. Water quality is generally acceptable in dry weather but can be affected by the Ala Wai Canal discharge after storms.
Waikiki Beach — About 3 miles from port (~15 min by taxi). The most famous beach in Hawaiʻi is regularly monitored. Water quality can be impacted by the Ala Wai Canal, particularly after heavy rain. Check current advisories.
Kailua Beach — About 12 miles from port (~30 min by car). Requires more travel time but offers excellent water quality with open-ocean flushing. A good option if you have 4+ hours in port.
Kahului Harbor is on Maui's north shore. The harbor area has murky water and is not suitable for swimming. Maui's best beaches require a 20-45 minute drive.
Kanaha Beach Park — About 2 miles from port (~5 min drive). A popular windsurfing beach with mixed water quality. Urban runoff can impact this area. Not the best option for swimming.
Kaʻanapali Beach — About 25 miles from port (~40 min drive). One of Maui's top resort beaches with generally good water quality and open ocean flushing. Worth the drive if time allows.
Kamaole Beaches — About 12 miles from port (~25 min drive). Three beaches in Kihei with decent water quality. Closer than Kaʻanapali and suitable for families.
Kona is a tender port, meaning you take a small boat to shore at Kailua Pier. The good news: you are steps from town and walking distance to several beaches.
Kamakahonu Beach — Right next to the tender pier. A tiny, sheltered beach ideal for wading. Water quality is generally acceptable but this is a small, enclosed area.
Magic Sands Beach — About 4 miles south (~10 min drive). A fun bodysurfing beach with good open-ocean flushing. Conditions can be rough in winter months.
Hapuna Beach — About 30 miles north (~35 min drive). One of the Big Island's finest beaches with excellent water quality. Only feasible if you have ample time in port.
Nʻawiliwili Harbor is located on Kauaʻi's southeast coast near Lʻihuʻe. Several beaches are accessible within a short drive.
Kalapaki Beach — Less than 1 mile from port (~3 min drive or 10 min walk). A sheltered beach in Nʻawiliwili Bay with calm water. Popular with cruise passengers. Water quality is generally acceptable in dry conditions but the harbor proximity is a factor.
Poʻipʻu Beach — About 14 miles south (~25 min drive). One of Kauaʻi's best beaches with good water quality and lifeguards. A great family option.
Lydgate Beach — About 7 miles north (~15 min drive). Features a protected swimming area ideal for children. Generally has acceptable water quality.
The Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. If it has been raining at your port of call, consider a pool day or inland activities instead. Cruise passengers cannot wait for conditions to improve — check water quality before committing to a beach excursion. Urban beaches near ports are especially vulnerable to runoff contamination after storms.
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⚠️ Important Disclaimer
Safe to Swim Hawaii is an independent passion project — it is not affiliated with the Hawaii Department of Health or any government agency. Water quality ratings on this site are estimates based on publicly available testing data and geographic analysis. They are not real-time measurements and may not reflect current conditions. “No DOH Alerts” means no advisory is currently posted — it does not mean the water was tested and found safe. DOH only monitors a fraction of Hawaii’s beaches, and some areas have no regular testing at all.
Always verify current water quality conditions with the Hawaii Department of Health Clean Water Branch before entering the water. This site is for informational purposes only and should not be the sole basis for any swimming decisions.
This site is a work in progress and we want to make it better. If you notice something that isn't working right, have a suggestion, or want to share local knowledge about a beach, please reach out.
When in doubt, don't go out. 🤙