Halawa Bay

Can You Swim at Halawa Bay Today?

Halawa Bay is a river-mouth beach at Molokaʻi’s east end, where two streams drain a wet windward valley directly into the ocean. DOH does not routinely test Molokaʻi beaches. Island-wide and statewide advisories can still apply; check the live status below. A dry day or clear-looking water does not establish water quality.

• Estimated risk: 3 out of 5 (Moderate — river mouth)
• Water type: River-mouth bay, stream discharge, windward
• After rain: Check current DOH notices; elapsed time does not establish water quality
• Other beach guide: Pāpohaku Beach (west end; check its current status separately)

Based on geographic analysis, Halawa Bay likely has moderate bacteria levels overall, with sharp spikes after rain. The main drivers are:

• Two perennial streams (Halawa & Moaʻula) drain directly into the bay, carrying watershed runoff year-round
• Windward wet climate — east Molokaʻi gets 80–120+ inches of rain per year, with heavy showers common
• Sediment and organic matter from the valley’s taro fields, forest litter, and wildlife
• Slow clearing after storms — the bay can remain murky for 4–7 days or longer after a Kona low

In dry conditions with clear water, locals do swim here and the bay is popular for family picnics and valley-hike rest stops. The risk is not constant — it tracks rainfall closely.

However: This is an estimate only. The Hawaii Department of Health does NOT monitor any Molokaʻi beaches. There is no testing data to confirm actual bacteria levels. “No DOH Alerts” means no routine DOH sample is available — not that it was tested clean. Clear-looking water does not establish water quality; check current DOH notices separately.

Based on: Geographic analysis only (no DOH data). River-mouth bay, windward wet valley, two perennial streams, high rainfall zone.