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DAILY REPORTS · ALL ISLANDS

Hawaii Water Quality Blog

Every day: new advisories, 14-day trend per island, NOAA 7-day forecast, today's cleanest and most-advisoried beaches — compiled from 6 data sources.

The DOH only tests 57 of 300+ Hawaiian beaches. Every day we pull fresh data from DOH Clean Water Branch, NOAA National Weather Service, USGS stream gauges, and published spill reports into a single digestible report so you can see what is actually happening with Hawaii's ocean water today.
Daily Reports — newest first
Hawaii Water Quality — May 31, 2026
Maui water quality is worsening (-79pp in 14 days)
Hawaii Water Quality — May 30, 2026
Advisory cleared at Hanakaʻoʻo Beach Park — Maui coast continues recovering
Hawaii Water Quality — May 29, 2026
Maui water quality is worsening (-79pp in 14 days)
Hawaii Water Quality — May 28, 2026
Maui water quality is worsening (-71pp in 14 days)
Hawaii Water Quality — May 27, 2026
Maui water quality is worsening (-64pp in 14 days)
Hawaii Water Quality — May 26, 2026
Maui water quality is worsening (-57pp in 14 days)
Hawaii Water Quality — May 25, 2026
Maui water quality is worsening (-50pp in 14 days)
Hawaii Water Quality — May 24, 2026
Maui water quality is worsening (-43pp in 14 days)
Hawaii Water Quality — May 23, 2026
Advisory cleared at Anini Beach — Kauaʻi coast continues recovering
Hawaii Water Quality — May 22, 2026
Maui water quality is worsening (-29pp in 14 days)
Hawaii Water Quality — May 21, 2026
Maui water quality is worsening (-21pp in 14 days)
Hawaii Water Quality — May 20, 2026
Anaehoʻomalu Bay (A-Bay) hits 30 consecutive clean days
Hawaii Water Quality — May 19, 2026
New advisory posted at Hanakaʻoʻo Beach Park — and what it means for the rest of Maui
Hawaii Water Quality — May 18, 2026
Anaehoʻomalu Bay (A-Bay) hits 30 consecutive clean days
Hawaii Water Quality — May 17, 2026
Maui water quality is improving (+21pp in 14 days)
Hawaii Water Quality — May 16, 2026
Maui water quality is improving (+29pp in 14 days)
Hawaii Water Quality — May 15, 2026
Maui water quality is improving (+36pp in 14 days)
Hawaii Water Quality — May 14, 2026
Maui water quality is improving (+43pp in 14 days)
Hawaii Water Quality — May 13, 2026
Maui water quality is improving (+50pp in 14 days)
Hawaii Water Quality — May 12, 2026
Maui water quality is improving (+57pp in 14 days)
Hawaii Water Quality — May 11, 2026
Maui water quality is improving (+64pp in 14 days)
Hawaii Water Quality — May 10, 2026
Maui water quality is improving (+71pp in 14 days)
Hawaii Water Quality — May 9, 2026
Maui water quality is improving (+79pp in 14 days)
Hawaii Water Quality — May 8, 2026
Maui water quality is improving (+86pp in 14 days)
Hawaii Water Quality — May 7, 2026
Maui water quality is improving (+86pp in 14 days)
Hawaii Water Quality — May 6, 2026
Maui water quality is improving (+100pp in 14 days)
Hawaii Water Quality — May 4, 2026
Maui water quality is improving (+86pp in 14 days)
Hawaii Water Quality — May 3, 2026
Maui water quality is improving (+79pp in 14 days)
Hawaii Water Quality — May 2, 2026
Maui water quality is improving (+71pp in 14 days)
Hawaii Water Quality — May 1, 2026
Advisory cleared at Makaha Beach — Oʻahu coast continues recovering
Hawaii Water Quality — April 30, 2026
Maui water quality is improving (+57pp in 14 days)
Hawaii Water Quality — April 29, 2026
Maui water quality is improving (+50pp in 14 days)
Hawaii Water Quality — April 28, 2026
Maui water quality is improving (+43pp in 14 days)
Hawaii Water Quality — April 27, 2026
Maui water quality is improving (+36pp in 14 days)
Hawaii Water Quality — April 26, 2026
Maui water quality is improving (+29pp in 14 days)
Hawaii Water Quality — April 25, 2026
Kauaʻi water quality is worsening (-64pp in 14 days)
Hawaii Water Quality — April 24, 2026
Kauaʻi water quality is worsening (-57pp in 14 days)
Hawaii Water Quality Report — Week of April 23, 2026: The Two-Hawaii Divide
Trip planners this week face two Hawaiis. Maui and the Big Island are running fully clean. Oʻahu and Kauaʻi are still recovering from the April 10 Kona Low. NOAA forecasts dry for most of the state — recovery should start within days.
Hawaii Water Quality Report — Week of April 19, 2026
Hawaii water quality update.
Hawaii Water Quality Report — Week of April 14
Hawaii water quality update.

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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.

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 does not recommend or advise anyone to swim at any beach. We share government data and geographic analysis so you can make your own informed decisions. By using this site you accept full responsibility for your own safety.

When in doubt, don't go out.