Oahu update · 2026-04-12

Oahu: Storm Aftermath—Flood Risks Persist, Beaches Still Unsafe

Heavy rain and high winds continue to impact Oahu, with lingering flood risks and hazardous ocean conditions. Officials urge caution and indoor activities.

Oahu: Storm Aftermath—Flood Risks Persist, Beaches Still Unsafe beach conditions image

Oahu is still recovering from the recent storm system, with flood watches extended and dangerous ocean conditions persisting. Heavy rain has saturated soils, increasing the risk of flash flooding and landslides, particularly in windward and mauka areas. Beaches remain under advisories due to high surf, strong currents, and elevated bacteria levels from runoff. Non-essential offices and schools are reopening today, but officials urge caution when traveling or heading to the coast. If you must go out, stick to indoor activities or sheltered areas away from the shoreline. Here’s what you need to know for today.

Recommended Beaches

Neighborhood: Urban Honolulu

Ala Moana Beach Park

Oahu · Best window: morning

medium confidence
  • Reef-protected lagoon offers calmer waters, but runoff risks remain elevated.
  • Lifeguards on duty—stick to guarded areas if visiting.
  • Central location with nearby indoor alternatives (e.g., Ala Moana Center).
View beach page →

Ala Moana: Magic Island Lagoon

Oahu · Best window: midday

low confidence
  • Enclosed lagoon is safer for wading if rain clears briefly.
  • Avoid swimming—water quality may be compromised due to runoff.
View beach page →

Sans Souci Beach

Oahu · Best window: morning

low confidence
  • Calm, shallow waters protected by a reef—ideal for families if conditions allow.
  • Lifeguards on duty, but runoff risks are elevated.
View beach page →

Kailua Beach Park

Oahu · Best window: morning

medium confidence
  • Windward shore may have elevated runoff and choppy conditions—proceed with caution.
  • Lifeguards on duty, but avoid swimming if water is discolored.
View beach page →

Who Is This Update For?

🏄 Beginners

Avoid the ocean today. Runoff from heavy rain has likely elevated bacteria levels, and surf remains choppy. Wait 48–72 hours after the storm passes before swimming. Stick to indoor activities like museums, shopping centers, or Chinatown’s cultural spots.

👨‍👩‍👧 Families

Keep kids indoors or at sheltered parks (e.g., Ala Moana Center, Bishop Museum). If you must visit the beach, choose lifeguarded, reef-protected areas like Ala Moana and rinse off thoroughly afterward. Pack rain gear and indoor backup plans—lingering moisture could bring more showers.

🌊 Experienced

Ocean conditions are hazardous due to high surf, strong currents, and runoff. Avoid North Shore and windward beaches entirely. Check the Clean Water Branch’s advisory map before considering any water activities: [https://health.hawaii.gov/cwb/](https://health.hawaii.gov/cwb/).

Full Briefing

Ocean Conditions

high

Oahu’s beaches remain under advisories due to dangerous ocean conditions. High surf (4.4–6.4 ft) and strong westerly winds (7–11 mph) are creating choppy, hazardous waters, particularly on the North Shore and windward shores. Runoff from heavy rain has elevated bacteria levels, making most shorelines unsafe for swimming. The Ocean Safety Division warns against entering the water at North Shore beaches like Waimea Bay and Sunset Beach due to high surf and flash-flood risks. South shore beaches (e.g., Ala Moana, Waikiki) are relatively calmer but still pose runoff risks. Avoid discolored or murky water—even if it looks clear, bacteria levels may be unsafe. Windward beaches like Kailua are experiencing choppy conditions and elevated runoff.

Weather Snapshot

high

Oahu remains under a flood watch, with lingering moisture bringing scattered showers and gusty winds (10–20 mph). Temperatures are in the low 70s, with rain chances at 100% for most of the island. The heaviest downpours are expected in windward and mauka areas, where flash flooding and landslides remain possible. The storm system may bring additional rounds of rain into next week, though conditions should gradually improve. Officials urge residents and visitors to stay informed and avoid unnecessary travel, especially in flood-prone areas.

News To Know

high

Oahu continues to recover from the storm’s impacts. Kamehameha Highway near Waikane remains closed due to flooding, and officials warn of potential landslides in saturated areas. The Honolulu Passport Fair is scheduled for April 18 at the ʻAiea Library—appointments are required, and residents should bring proof of identity, a completed DS-11 application, a passport photo, and payment. Non-essential city and state offices, schools, and public facilities have reopened, but some parks and beach access points may still be closed. The National Weather Service notes that additional rain is possible into next week, so stay tuned for updates.

What Changed Since Yesterday

Quick Hits

  • Stay home if possible—avoid unnecessary travel and coastal areas.
  • Check the Ocean Safety Division’s beach conditions page before heading out: [https://www.oceansafety.honolulu.gov](https://www.oceansafety.honolulu.gov).
  • Pack rain gear and indoor backup plans—lingering moisture could bring more showers.
  • Avoid North Shore and windward beaches entirely—high surf and runoff create dangerous conditions.
  • Rinse off thoroughly after any ocean activity—bacteria levels may be elevated even if water looks clear.

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.

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