South shore beaches like Magic Island Lagoon offer calm, reef-protected waters-ideal for families. Windward shores are breezy; North Shore advisories remain-avoid swimming.
Oahu's south shore is the star today, with calm, reef-protected waters at **Magic Island Lagoon**-perfect for swimming and family-friendly activities. **Ala Moana Beach Park** offers moderate waves inside the reef, but strong currents exist beyond it. Windward shores like **Kailua Beach Park** are breezy (winds at 20 mph), making them ideal for windsurfing but choppy for swimming. **North Shore beaches** (Sunset Beach, Waimea Bay) have solid surf (4-4.8 ft), but **brown water advisories** remain in effect-do not enter the water. Waikiki's contaminated runoff risk persists; avoid swimming there. Lifeguards are on duty at major beaches, but always check for discolored water and posted warnings.
Currently posted advisories from the Hawaii Department of Health affecting Oahu. Source: official DOH Clean Water Branch.
Posted Apr 30, 2026 · Makua Beach
Full advisory at health.hawaii.gov →Posted Apr 23, 2026 · Haleiwa Beach Park to Mokuleia 260A Beach Access
Full advisory at health.hawaii.gov →Oahu · Best window: afternoon
high confidenceOahu · Best window: morning
medium confidenceOahu · Best window: midday
medium confidenceOahu · Best window: morning
low confidenceOahu · Best window: morning
low confidenceStick to enclosed, reef-protected spots like **Magic Island Lagoon** or **Sans Souci Beach**. Avoid North Shore beaches-**brown water advisories** are active, and surf is unsafe for swimming. Winds are strong (20 mph), so expect choppy conditions on windward shores. Always swim near a lifeguard and **avoid discolored water**-runoff risks are high. Rinse off after swimming to avoid skin irritation. **Never swim beyond the reef** at any beach.
**Magic Island Lagoon** is your safest bet today-calm waters, lifeguards, and space for kids to play. **Sans Souci Beach** is another great option with gentle waves. **Avoid Waikiki** (contaminated runoff risk) and **North Shore beaches** (brown water advisories). Pack windbreakers (trade winds are strong) and rinse off after swimming. Check the [Clean Water Branch advisories](https://eha-cloud.doh.hawaii.gov/cwb) before heading out.
Kailua's trade winds (20 mph) are ideal for **windsurfing or kitesurfing**-rentals are available nearby. North Shore surf is solid (4-4.8 ft), but **brown water advisories** make swimming unsafe. If you're set on getting in the water, south shore spots like **Magic Island Lagoon** are safer, but **avoid discolored water** and Waikiki. Check the [Clean Water Branch website](https://eha-cloud.doh.hawaii.gov/cwb) for updates. Rinse gear thoroughly after use to avoid contamination.
Oahu's **south shore** (Magic Island Lagoon, Sans Souci) offers calm, reef-protected waters with minimal waves-ideal for swimming and beginner-friendly activities. **Ala Moana Beach Park** has moderate waves (3.2 ft) inside the reef, but **strong currents exist beyond it-avoid the channel**. **Windward shores** (Kailua) are breezy (20 mph winds), making them perfect for windsurfing but choppy for swimming. **North Shore beaches** (Sunset Beach, Waimea Bay) have solid surf (4-4.8 ft), but **brown water advisories** remain active-do not enter the water. Waikiki's contaminated runoff risk persists; avoid swimming there. Lifeguards are on duty at major beaches, but always check conditions before entering.
Oahu is under partly cloudy skies today, with temperatures in the mid-70s. Winds are steady from the east-northeast at 20 mph, keeping conditions breezy. Rain chances are low (0%), but morning fog is possible near windward shores, clearing by midday. The ground remains saturated from recent storms-avoid hiking trails or low-lying areas prone to flooding. Midday is the best time for beach visits, with the least wind and sunniest conditions.
**Kailua resident's flood claim denied**: A Kailua homeowner is frustrated after the Board of Water Supply denied his damage claim following a watermain break that flooded his home. [Read more](https://www.khon2.com/local-news/kailua-resident-water-main-break/). **Robyn Ah Mow steps down from Rainbow Wahine Volleyball**: After nearly a decade as head coach, Ah Mow is leaving the University of Hawaii's volleyball program. [Read more](https://www.khon2.com/gobows/rainbow-wahine-head-coach-departure/). **Waikiki's contaminated flooding risk persists**: A UH Mānoa study warns that rising sea levels could cause the Ala Wai Canal to backwash sewage-contaminated water into Waikiki streets and beaches. Avoid swimming in Waikiki until further notice. [Read more](https://www.hawaiipublicradio.org/local-news/2026-04-24/waikiki-faces-threat-of-contaminated-flooding). **City launches AI assistant 'Akamai'**: Honolulu's new AI voice assistant, Akamai, is now available 24/7 to answer questions about driver's licenses, vehicle registrations, and state IDs. [Read more](https://www.khon2.com/local-news/akamai-ai-voice-assistant/).
**Active advisories on Oahu's North and West Shores**: The Hawaii Department of Health has issued brown water advisories for two zones: - **Haleiwa Beach Park to Mokuleia 260A Beach Access** (North Shore) - **Makua Beach** (West Side) **Do not enter the water** in these areas-runoff from recent storms may contain harmful bacteria, chemicals, and debris. Advisories remain in effect until water quality improves. Check the [Clean Water Branch website](https://eha-cloud.doh.hawaii.gov/cwb) for updates.
Disclaimer: This update is generated using AI and automated data sources including weather APIs, surf forecasts, and news feeds. It is not professional safety advice. Ocean conditions change rapidly and may differ from what is described here. Always check with on-site lifeguards, observe posted warning signs, and consult official sources such as the National Weather Service before entering the water. HawaiiYeah assumes no liability for injury, loss, or damage arising from use of this information. See our full disclaimer.