What to expect for water quality, rainfall, and ocean conditions
Wet season rainfall in december increases the chance of water quality advisories at Anahola Beach. Runoff from nearby streams can carry bacteria into coastal waters. Avoid the water for 72 hours after heavy rain.
December is part of Hawaii's wet season (October through March). Anahola Beach sees approximately 5.0 inches of rain this month. Heavier rainfall means more runoff entering coastal waters, carrying bacteria from inland areas. Streams and storm drains near the beach can discharge after rain events.
December brings variable ocean conditions to Anahola Beach. Some swell wrap-around and wind chop are possible. Water temperature around 76-78°F. Check surf reports before heading out.
High. Holiday season brings a surge of visitors. Christmas through New Year is one of the busiest periods.
The Hawaii Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. In december, rainfall is more frequent and can produce significant contaminated runoff. Be especially cautious after storms.
When conditions are clear, Anahola 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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