This is an older update. Read the latest Big Island update →Big Island update · 2026-04-18

Big Island: West Shore Calm, Brown Water Advisory Still Active

West-facing beaches like Hapuna and Spencer Beach Park provide sheltered, calm waters. Brown water advisory still in effect—check water quality before swimming.

Big Island: West Shore Calm, Brown Water Advisory Still Active beach conditions image

The Big Island’s west shore remains the best option for calm ocean conditions today, with Hapuna Beach Park and Spencer Beach Park offering small surf (1.4–2.4 ft) and lifeguard-monitored areas. A statewide brown water advisory continues due to storm runoff, warning against swimming in discolored or murky water. Avoid windward shores, river mouths, and areas with visible contamination. Stick to sheltered west-facing beaches and check the Hawaii Department of Health’s latest water quality updates before entering the water.

Recommended Beaches

Hapuna Beach Park

Big Island · Best window: midday

high confidence
  • Small surf (1.4 ft) with calm waters—ideal for swimming and sunbathing
  • Lifeguard-monitored and sheltered from windward chop
  • Patchy rain nearby (88% chance), but dry periods likely midday
View beach page →

Spencer Beach Park

Big Island · Best window: morning

high confidence
  • Breakwall-protected cove with shallow, calm waters—safe for families and beginners
  • Less prone to runoff contamination due to sheltered location
  • Lifeguard on duty and dry picnic areas available
View beach page →

Carlsmith Beach Park

Big Island · Best window: afternoon

medium confidence
  • Protected lagoon with calm waters—good for wading and sea turtle sightings
  • Shaded areas provide shelter from sun
  • Avoid if water appears murky or discolored
View beach page →
Neighborhood: Hilo

Onekahakaha Beach Park

Big Island · Best window: midday

medium confidence
  • Artificial lagoon offers enclosed, calm swimming area—ideal for families
  • Grassy picnic areas provide dry refuge
  • Lifeguard-monitored, but check water clarity before entering
View beach page →
Neighborhood: Kahaluu-Keauhou

Kahaluʻu Beach Park

Big Island · Best window: morning

medium confidence
  • Moderate surf (2.4 ft) but sheltered—good for experienced swimmers if water is clear
  • Snorkeling potential if visibility is good
  • Check water quality before entering due to runoff risks
View beach page →

Who Is This Update For?

🏄 Beginners

Stick to west-facing beaches like Hapuna or Spencer Beach Park—calm, lifeguarded waters are safest. Avoid windward shores, murky water, and areas with visible runoff. Pack sun protection and check for bacteria advisories before entering.

👨‍👩‍👧 Families

Hapuna and Spencer Beach Park 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 rain appears.

🌊 Experienced

West shore beaches offer small to moderate surf (1.4–2.4 ft) for swimming or light snorkeling. Avoid windward shores—strong currents persist. Monitor water quality updates; conditions can shift quickly with runoff.

Full Briefing

Ocean Conditions

high

West-facing beaches (Hapuna, Spencer) offer the calmest conditions today, with small to moderate surf (1.4–2.4 ft) and relatively clear waters. A statewide brown water advisory remains in effect due to storm runoff, warning against swimming in discolored or murky water. Windward shores and river mouths are particularly risky—avoid areas with visible contamination. The Hawaii Department of Health advises treating all beach sites as potentially unsafe for swimming until further notice.

Weather Snapshot

high

The Big Island’s west shore is seeing patchy rain nearby today, with temperatures in the low 70s. Hapuna Beach Park reports 70.6°F and 88% rain chance, while Kahaluʻu Beach Park is at 72°F with light S winds (4.3 mph). Windward areas may experience higher winds and isolated showers. Monitor updates from the National Weather Service for any changes.

News To Know

high

Federal disaster assistance is now available for residents, businesses, and farmers impacted by the March Kona Low storms. The Big Island’s beaches remain under a brown water advisory, with health officials warning that bacterial levels remain elevated. No new beach closures have been announced, but visitors should continue to avoid discolored or murky water. For updates, check the Hawaii Department of Health’s latest water quality reports.

What Changed Since Yesterday

Quick Hits

  • West shore beaches (Hapuna, Spencer) are safest today—calm, clear waters and lifeguards.
  • Brown water advisory still in effect; avoid murky or discolored water.
  • Hapuna Beach Park has high rain chance (88%)—plan for dry periods midday.
  • Have an indoor backup plan (e.g., museums, aquariums) if conditions change.
  • Check Hawaii Department of Health’s latest water quality updates before entering the water.

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.

Join the Community

Stay Connected

Follow us for the latest beach updates, surf reports, and island vibes