Kauaʻi water quality is worsening (-57pp in 14 days)
Kauaʻi ocean water quality worsened 57 percentage points over the last 14 days (57% clean two weeks ago vs. 0% clean now).
For a trip in the next week, prioritize islands with stronger structural protection (dry coasts, reef enclosure, no major streams). See cleanest Hawaiian island and BWA alternatives.
Big Island is stable — no significant change in the last 14 days. 0 of our 7 tracked beaches on the island have active advisory days in the last 30 days. NOAA's 7-day forecast is dry, so the current pattern should hold. See the Big Island leaderboard for the beach-by-beach ranking.
Maui is improving over the last 14 days (+50pp vs. the prior two weeks). 6 of our 6 tracked beaches on the island have active advisory days in the last 30 days. NOAA's 7-day forecast is dry, so the current pattern should hold. See the Maui leaderboard for the beach-by-beach ranking.
Oʻahu is worsening over the last 14 days (-32pp vs. the prior two weeks). 12 of our 12 tracked beaches on the island have active advisory days in the last 30 days. NOAA's 7-day forecast is dry, so the current pattern should hold. See the Oʻahu leaderboard for the beach-by-beach ranking.
Kauaʻi is worsening over the last 14 days (-57pp vs. the prior two weeks). 6 of our 6 tracked beaches on the island have active advisory days in the last 30 days. NOAA's 7-day forecast is dry, so the current pattern should hold. See the Kauaʻi leaderboard for the beach-by-beach ranking.
For the always-live per-island outlook, see our Hawaii Water Quality Forecast, which regenerates daily from NOAA + DOH data.