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Waimea Bay Water Quality in June

What to expect for water quality, rainfall, and ocean conditions

Checking live advisories…
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June Conditions at Waimea Bay
June Advisory Risk Low

Dry conditions and calm seas make Waimea Bay an excellent swimming destination. Waimea River discharge is minimal. Water quality is good.

🌧️ Rainfall & Runoff

June at Waimea Bay is completely different from winter. The ocean is calm, flat, and perfect for swimming and cliff jumping from the famous Waimea Rock. Water quality is excellent with dry conditions.

🌊 Ocean Conditions

Summer transforms Waimea Bay into a calm swimming lagoon. The water is flat, clear, and warm (79-80°F). The famous jumping rock draws crowds. Snorkeling is possible along the rocky north side of the bay.

👥 Crowd Levels

High. Summer is peak family travel season with school holidays. Beaches are busy from mid-morning through sunset.

📌 June Notes
•In summer, Waimea Bay's calm waters make the famous jumping rock a popular activity. The rock sits about 25 feet above the water. Jump at your own risk and check depth conditions.
•Summer is the safest time for ocean swimming on most Oahu beaches, with smaller surf and fewer water quality advisories.
⚠
If It Looks Brown, Don't Swim
Never enter the ocean when the water appears brown or murky, even if no advisory is posted. Hawaii is often slow to test beaches and update advisories — not every beach is monitored. After heavy rain, wait at least 72 hours and until the water clears before swimming.
Learn more about brown water advisories →
⚠️ The 72-Hour Rain Rule

The Hawaii Department of Health recommends staying out of the ocean for at least 72 hours after heavy rain. In june, rainfall is less frequent but individual storms can still produce contaminated runoff.

Book Tours & Activities

When conditions are clear, Waimea Bay has excellent ocean activities. Check the water quality above, then book with confidence.

⛳ North Shore Adventure Tour
Full-day North Shore excursion including Waimea Bay, Haleiwa, and famous surf spots.
Viator
🏄 North Shore Ocean Experience
Guided tour of Oahu's legendary North Shore with beach stops, local food, and surf culture.
GetYourGuide

Tours listed via Viator and GetYourGuide. Safe to Swim Hawaii may earn a commission if you book, at no extra cost to you.

Waimea Bay — Other Months
Waimea Bay in January→ Waimea Bay in February→ Waimea Bay in March→ Waimea Bay in April→ Waimea Bay in May→ Waimea Bay in July→ Waimea Bay in August→ Waimea Bay in September→ Waimea Bay in October→ Waimea Bay in November→ Waimea Bay in December→
Related Guides
Waimea Bay — Full Water Quality Guide→ Hawaii Brown Water Advisory — Live Status→ Best Time to Swim in Hawaii→ Is It Safe to Swim After Rain?→ Jellyfish Calendar 2026 — Box Jellyfish Warning Dates→
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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. 🤙

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