What to expect for water quality, rainfall, and ocean conditions
Wet season rainfall in november increases the chance of water quality advisories at Chuns Reef. Runoff from nearby streams can carry bacteria into coastal waters. Avoid the water for 72 hours after heavy rain.
November is part of Hawaii's wet season (October through March). Chuns Reef sees approximately 4.5 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.
Winter brings large north and northwest swells to Chuns Reef. Waves can reach 15-30+ feet on big days. Strong currents and shore break make conditions challenging. Water temperature around 78-79°F. These conditions are for experienced ocean-goers only.
Low. Pre-holiday quiet period. Thanksgiving week sees a brief uptick but otherwise Chuns Reef is peaceful.
The Hawaii Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. In november, rainfall is more frequent and can produce significant contaminated runoff. Be especially cautious after storms.
When conditions are clear, Chuns Reef has excellent ocean activities. Check the water quality above, then book with confidence.
Tours listed via Viator and GetYourGuide. Safe to Swim Hawaii may earn a commission if you book, at no extra cost to you.
Free alerts when water quality changes at your beach — brown water advisories, bacteria warnings, and all-clear notices.
No spam. Just safety alerts for your trip.
500+ beaches and 25+ hotels across all 6 islands
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.
When in doubt, don't go out. 🤙