Does it rain at Wailea Beach in September?

Wailea Beach is on one of Hawaii's driest coastlines. September sees minimal rainfall regardless of the season. The dry microclimate means rain rarely affects water quality or beach plans at this location.

Is September a good time to swim at Wailea Beach?

September at Wailea Beach has very low bacteria risk based on historical patterns. Summer occasionally brings south swells to Wailea, which can create larger-than-usual surf for this typically calm beach. Conditions in september are generally favorable for ocean activities at Wailea Beach. Always check the live advisory status above and use the 72-hour rain rule.

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Maui · South Shore

Wailea Beach Water Quality in September

Q: What is Wailea Beach water quality like in September?

September at Wailea Beach is typically characterized by very low bacteria risk based on seasonal rainfall patterns. September brings slightly fewer crowds to Wailea while conditions remain excellent. Wailea Beach has one of the lowest advisory rates in Hawaii. The dry climate and lack of stream discharge mean water quality is consistently excellent.

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

Checking live advisories…

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September Conditions at Wailea Beach

September Advisory Risk Very Low

Wailea Beach has one of the lowest advisory rates in Hawaii. The dry climate and lack of stream discharge mean water quality is consistently excellent.

🌧️ Rainfall & Runoff

September brings slightly fewer crowds to Wailea while conditions remain excellent. The south shore stays dry and calm. This is an excellent value month for Maui south-shore visits.

🌊 Ocean Conditions

Summer occasionally brings south swells to Wailea, which can create larger-than-usual surf for this typically calm beach. Water temperature is warm (79-80°F). Check surf reports for unusual south-swell events.

👥 Crowd Levels

Moderate to low. Fall shoulder season offers fewer tourists while conditions remain good. This is one of the best value periods for visiting Hawaii.

⚠

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 september, rainfall is less frequent but individual storms can still produce contaminated runoff.

Book Tours & Activities

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

⛳ Wailea Snorkel & Turtle Tour

South Maui snorkeling cruise with turtle sightings, gear included. Departs near Wailea.

Viator

🏄 Wailea Coast Snorkeling

Guided snorkeling along the Wailea coast with opportunities to swim with sea turtles.

GetYourGuide

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

Wailea Beach — Other Months

Wailea Beach in January→ Wailea Beach in February→ Wailea Beach in March→ Wailea Beach in April→ Wailea Beach in May→ Wailea Beach in June→ Wailea Beach in July→ Wailea Beach in August→ Wailea Beach in October→ Wailea Beach in November→ Wailea Beach in December→

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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. 🤙