What to expect for water quality, rainfall, and ocean conditions
Wet season storms flush contaminants through the Ala Wai Canal and urban drainage into Ala Moana's reef-protected lagoon. The lagoon's limited water exchange means bacteria can accumulate. Advisory risk is elevated during extended rain.
February brings 2-3 inches of rain to Honolulu. Kona storms can stall over the area bringing multi-day rainfall. The shallow lagoon behind the reef at Ala Moana has limited water exchange, meaning bacteria can accumulate after rain events.
Winter conditions in the Ala Moana lagoon remain calm due to reef protection. Water temperature is 75-77°F. Occasional south swell wrap can create small waves on the outer reef. Trade wind chop affects exposed areas.
High. Ala Moana is popular with both locals and tourists year-round. Holiday season adds tourist visitors but this beach is always busy with local families.
The Hawaii Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. In february, this is especially important as wet-season storms can produce heavy rainfall and significant runoff.
When conditions are clear, Ala Moana Beach has excellent ocean activities. Check the water quality above, then book with confidence.
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Safe to Swim Hawaii provides water quality information based on publicly available DOH data and seasonal patterns. This is not medical or safety advice. Always check current conditions, obey posted signs, and use your own judgment before entering the ocean. Privacy Policy
⚠️ 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 conditions with the Hawaii DOH Clean Water Branch before entering the water.
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