Hapuna and Spencer Beach Parks remain calm with small surf. Brown water advisory persists for Hilo Bay and Hamakua Coast. Volcanic ash may affect air quality near Kīlauea.
The Big Island's west shore continues to deliver calm ocean conditions today, but a **brown water advisory** remains in effect for Hilo Bay and the Hamakua Coast, and a **volcanic ash advisory** is active for areas north/northwest of Halemaʻumaʻu following Kīlauea's 46th eruption of 2026. Hapuna Beach Park and Spencer Beach Park are the safest picks for swimming, with small surf (2 ft) and lifeguards on duty. Avoid beaches in the advisory zones, and check air quality updates if you're sensitive to volcanic ash. Pack sun protection and monitor Hawaii Department of Health and NWS advisories before heading out.
Currently posted advisories from the Hawaii Department of Health affecting Big Island. Source: official DOH Clean Water Branch.
Posted Apr 30, 2026 · Hilo bay and along the Hamakua Coast
Full advisory at health.hawaii.gov →Posted Apr 2, 2026 · Ninole area
Full advisory at health.hawaii.gov →Big Island · Best window: midday
high confidenceBig Island · Best window: morning
high confidenceBig Island · Best window: midday
medium confidenceBig Island · Best window: afternoon
medium confidenceBig Island · Best window: morning
medium confidenceStick to west-facing beaches like Hapuna or Spencer-calm, lifeguarded waters are safest. Avoid Hilo Bay, Hamakua Coast, and areas near Kīlauea due to advisories. Pack sun protection and check DOH/NWS updates before entering.
Hapuna and Spencer Beach Parks are your best bets-shallow, calm waters and lifeguards. Supervise kids closely, even in sheltered areas. Bring snacks and plan indoor backups (e.g., Imiloa Astronomy Center) if conditions change.
Carlsmith and Richardson offer decent snorkeling, but avoid Hilo Bay and Hamakua Coast due to brown water advisory. Monitor air quality near Kīlauea for volcanic ash. Windward shores may have stronger currents-stick to west-facing beaches.
West-facing beaches (Hapuna, Spencer) offer the calmest conditions today, with small surf (2-3 ft) and clear waters. A **brown water advisory** remains active for Hilo Bay and the Hamakua Coast-avoid swimming in these areas until the advisory lifts. Light winds (2.9-3.1 mph) prevail, with Kahaluʻu Beach Park experiencing slightly breezier conditions (SW winds). No active surf advisories, but avoid murky or discolored water, especially near river mouths or after rain. Volcanic ash may affect water clarity near Kīlauea's eruption zone.
The Big Island's west shore is partly cloudy today, with temperatures around 70°F. Hapuna Beach Park reports partly cloudy skies with light NNE winds (3.1 mph). Kahaluʻu Beach Park has a 60% chance of patchy rain nearby and light SW winds (2.9 mph). Volcanic ash advisories are in effect for areas north/northwest of Halemaʻumaʻu-check NWS updates if sensitive to ash. No significant rain expected, but gusty easterly winds (up to 22 mph) may affect air quality near the eruption zone.
A **brown water advisory** remains in effect for Hilo Bay and the Hamakua Coast-avoid swimming in these areas. Kīlauea's 46th eruption of 2026 has triggered an **ashfall advisory** for areas north/northwest of Halemaʻumaʻu, which may affect air quality and coastal zones. A tourist was caught on video throwing a rock at an endangered Hawaiian monk seal on Maui, sparking outrage and calls for stricter wildlife protections. FEMA funding is available for victims of the March Kona Low floods-visit a local recovery center for assistance.
Sources
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.