Ala Moana Beach Park
Oahu · Best window: morning
high confidence- Reef-protected lagoon offers calmer waters even in rain.
- Lifeguards on duty and ample shade for quick shelter.
- Central location makes it easy to duck indoors if showers intensify.
A storm system brings heavy rain and flash-flood warnings to Oahu. Ocean advisories remain active—choose beaches wisely.

Oahu is under a flood watch through Friday as another storm system brings heavy rain, flash-flood risks, and elevated runoff concerns. Ocean advisories remain in effect, with water-quality issues lingering from recent storms. If you're heading to the beach, stick to lifeguarded, reef-protected spots and avoid discolored water. Here’s what you need to know today.
Oahu · Best window: morning
high confidenceOahu · Best window: midday
medium confidenceOahu · Best window: morning
medium confidenceOahu · Best window: morning
low confidenceOahu · Best window: afternoon
low confidenceStick to reef-protected lagoons like Ala Moana or Magic Island. Avoid open ocean—currents and bacteria levels can be unpredictable after rain. Wait 48–72 hours after heavy rain before swimming.
Pack rain gear and plan for indoor backups (e.g., Bishop Museum, Honolulu Zoo). If swimming, choose lifeguarded beaches and rinse off thoroughly afterward. Avoid windward shores due to runoff risks.
Check the Clean Water Branch’s advisory map before paddling or surfing. Even if the water looks clear, bacteria levels may still be elevated. Avoid North Shore due to high runoff and flash-flood risks.
Oahu’s beaches remain under water-quality advisories due to runoff from recent storms. The state’s Clean Water Branch reports elevated bacteria levels, particularly on windward and south shores. Avoid discolored or murky water—even if it looks clear, bacteria may still be present. Surf is moderate (4–6 ft) but choppy due to southerly winds. Lifeguards are on duty at major beaches, but always heed posted warnings. North Shore beaches like Waimea Bay and Sunset Beach are not recommended for swimming due to high surf and runoff risks.
Heavy rain is expected to intensify today through Friday, with the heaviest downpours likely Thursday. A flood watch is in effect for Oahu, with 4–10 inches of rain forecasted. Temperatures will hover in the low 70s, with southerly winds at 15–25 mph. The storm system could linger into next week, bringing additional rounds of rain. Pack waterproof layers and plan for indoor alternatives if visiting.
Oahu is under a flood watch through Friday as a new storm system brings heavy rain and flash-flood risks. The National Weather Service warns that saturated soils from recent storms increase runoff concerns, particularly on windward shores. No beach closures have been reported yet, but officials urge caution near water due to lingering contamination advisories. The city has activated its emergency operations center and positioned high-water vehicles across the island. Sandbag distribution is underway in flood-prone areas like Waialua and Hauula. A Presidential Disaster Declaration has been approved, providing federal assistance for recovery efforts.
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.