Water quality, conditions, and what to know before you go
Sharks Cove on the North Shore receives winter north swells (October-April) that can produce significant surf. Summer conditions are typically calm. Check surf reports and match conditions to your ability.
Shore break can be significant during large north swells. Exercise caution during winter months. Summer conditions are more moderate.
North shore beaches can see elevated bacteria after rain events. Post-rain runoff from streams and developed areas increases risk. Surfers face consistent water exposure through submersion.
The Hawaii Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. This applies to all ocean activities including surfing. Runoff carries bacteria from land into nearshore waters.
When conditions are clear, Shark\x27s Cove has great options for surfing. 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.
When in doubt, don't go out. 🤙