Heavy rain returns to the Big Island, bringing flash flooding risks. Ocean conditions are hazardous—stick to indoor activities or sheltered beaches.
The Big Island is under a flood watch as heavy rain and strong winds move in, with up to 8 inches of rainfall expected. Ocean conditions are hazardous due to runoff, bacteria advisories, and potential flash flooding. If you’re visiting, prioritize indoor activities or sheltered beach parks with lifeguards. Avoid murky or brown water, and check the latest advisories before heading out. Stay safe—this isn’t the day for open-ocean swimming or snorkeling.
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medium confidenceAvoid the ocean today. If you must visit a beach, stick to enclosed areas like Onekahakaha’s lagoon or Spencer Beach Park’s breakwall. Check for bacteria advisories and avoid murky water—it’s not worth the risk. Pack rain gear and have an indoor backup plan.
Skip open-water beaches today. Onekahakaha’s lagoon or Spencer Beach Park’s sheltered areas are your safest bets if you need outdoor time. Supervise kids closely, even in shallow water. Bring rain covers for strollers and have a list of indoor activities (museums, aquariums) ready.
This is not a day for open-ocean activities. If you’re determined to get in the water, stick to lifeguarded beaches like Hapuna or Spencer, and avoid areas with visible runoff. Monitor weather updates—conditions can deteriorate rapidly. Consider postponing snorkeling or surfing until advisories lift.
Hazardous conditions prevail due to heavy rain, runoff, and potential bacteria advisories. West-facing beaches (Hapuna, Kahaluʻu) may offer calmer waters early, but avoid murky or brown water—it likely contains contaminants. Windward shores are choppy with strong currents, and flash flooding can create dangerous rip currents. The National Weather Service warns that saturated soils will lead to rapid runoff, increasing flood risks. Check for active advisories before entering the water.
Heavy rain and thunderstorms are expected today through Friday, with up to 8 inches of rainfall on the Big Island. Winds will gust up to 50 mph at higher elevations, and flash flooding is likely due to saturated soils. Temperatures will hover in the mid-60s to low 70s, but humidity will make it feel warmer. The National Weather Service has declared Wednesday through Friday as First Alert Weather Days. Prepare for rapidly changing conditions—pack rain gear and monitor updates.
The Big Island is under a flood watch as heavy rain returns, with flash flooding risks highest in low-lying and urban areas. Counties are prepping for more flooding, clearing canals and warning residents to stay alert. Ongoing bacteria and sewage advisories remain in effect—avoid swimming in murky or brown water. If you’re flying, check for delays due to the Hawaiian Airlines-Alaska Air merger integration, which is set to complete on April 22.
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.