Big Island's west shore beaches (Hapuna, Kahaluʻu) are snorkel-friendly today. South swell builds midweek-monitor conditions.
The Big Island's west shore beaches remain calm today, ideal for snorkeling and swimming. A **High Surf Advisory** is in effect for south shores of all Hawaiian Islands, with surf expected to build to 10-14 feet by midweek-plan accordingly. **Brown Water Advisory** remains active for Hilo Bay and the Hamakua coast; avoid swimming or snorkeling in these areas. Pack a light jacket for patchy rain, especially at Kahaluʻu Beach Park (73% rain chance).
Currently posted advisories from the Hawaii Department of Health affecting Big Island. Source: official DOH Clean Water Branch.
Posted Jun 2, 2026 · Hilo bay and along the Hamakua coast
Full advisory at health.hawaii.gov →Big Island · Best window: midday
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medium confidenceBig Island · Best window: afternoon
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medium confidenceBig Island · Best window: morning
medium confidenceStick to Hapuna or Spencer Beach Parks-calm, lifeguarded waters are safest. Avoid Kahaluʻu if you're not comfortable with moderate surf. Pack a light jacket for patchy rain and monitor [south swell updates](https://www.khon2.com/local-news/south-shore-surf-surge/). **Avoid Hilo Bay and Hamakua coast** due to the Brown Water Advisory.
Hapuna and Spencer Beach Parks are your best bets-shallow, calm waters and lifeguards. Supervise kids closely, even in sheltered areas. Bring indoor backups (e.g., Imiloa Astronomy Center) if rain disrupts plans. **Avoid Hilo Bay and Hamakua coast** due to the Brown Water Advisory.
Kahaluʻu offers decent snorkeling with moderate surf (3.7 ft). Monitor conditions and respect wildlife. Check for structural damage to restrooms and lifeguard towers before entering. **Avoid Hilo Bay and Hamakua coast** due to the Brown Water Advisory. Stay updated on south swell conditions via [KHON2](https://www.khon2.com/local-news/south-shore-surf-surge/).
West-facing beaches (Hapuna, Kahaluʻu) remain calm today, with small surf at Hapuna (1.6 ft) and moderate at Kahaluʻu (3.7 ft). Winds are light (3.8-4.7 mph), with Hapuna experiencing WNW winds and Kahaluʻu WSW winds. **High Surf Advisory** is in effect for south shores of all Hawaiian Islands, with surf expected to build to 10-14 feet by midweek-plan accordingly. **Brown Water Advisory** remains active for Hilo Bay and the Hamakua coast; avoid swimming or snorkeling in these areas. Kahaluʻu's surf is manageable for experienced swimmers-lifeguards are on duty.
The Big Island's west shore is warm today, with **Hapuna (77.9°F, 6% rain chance)** and **Kahaluʻu (75.7°F, 73% rain chance)** both experiencing patchy rain nearby. Winds are light (3.8-4.7 mph), but pack a light jacket for potential showers, especially at Kahaluʻu. Conditions are comfortable for beach time, but monitor radar for rain.
**High Surf Advisory** is in effect for south shores of all Hawaiian Islands-surf expected to build to 10-14 feet by midweek ([KHON2](https://www.khon2.com/local-news/south-shore-surf-surge/)). **Brown Water Advisory** remains active for Hilo Bay and the Hamakua coast-avoid swimming or snorkeling in these areas ([Hawaii DOH](https://eha-cloud.doh.hawaii.gov/cwb/#!/event/2074)). **Oahu surfer recovering** after a shark bite at Cromwell's Beach-monitor local updates for beach closures ([KHON2](https://www.khon2.com/local-news/oahu-surfer-recovers-shark-bite/)). **Violent assault on Oahu's North Shore**-a 15-year-old boy and a 23-year-old lifeguard were attacked by a group of 20; avoid the area if tensions persist ([KHON2](https://www.khon2.com/hawaii-crime/north-shore-teen-attack/)).
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.