Hurricanes risk in Hawaii

A roof in Kailua-Kona that has never seen a hurricane is still a roof that has never seen one. You are on a small island in a huge ocean, and most years the storms miss. But when one doesn’t, the wind and water can hit hard. Our statewide rating for hurricane risk to homes here is 3 out of 5 — moderate, not mild.

Hawaii is not Florida. The Central Pacific sees fewer named storms, and trade winds, dry air, and wind shear often tear them apart before they reach the islands. Still, warm water and a long season mean you should plan. The Hawaii Emergency Management Agency (HIEMA) is the state agency to follow, not a national feed that forgets there is an ocean between you and the mainland.

Why Hawaii looks like this

Hurricanes near Hawaii usually form off Mexico or in the Central Pacific and move west or northwest. A storm can pass 100 miles south of Honolulu County and still push surge onto the south shore of Oahu, or dump rain on the Ko‘olau range and flood windward neighborhoods. On the Big Island, Hawaii County sees both wind and rain, especially around Hilo and the Hamakua Coast. Maui County — Maui, Molokai, Lanai, and Kahoolawe — can get cut off when harbors close. Kauai County, including Niihau, is farther west and often gets a different track, but it only takes one.

The shape of the islands matters. Steep valleys and narrow gulches turn rain into fast water. South- and west-facing shores — Kona, Waikiki, Kihei, Lahaina — are usually calm, which is exactly why a hurricane approaching from the south can surprise people there. Storm surge is not a wall of water like a tsunami. It is rising water pushed by wind, and it can arrive for hours.

The other thing: hurricanes are not the only flood. A passing tropical storm or a kona low can drop enough rain to flood a house. In many Hawaii neighborhoods, rain flooding is the more frequent problem.

Insurance gaps people miss

Your homeowners policy may cover hurricane wind, but check the deductible. In Hawaii, many policies have a separate hurricane or named-storm deductible, often written as a percentage of your dwelling coverage. That means your out-of-pocket cost can be thousands more than your normal deductible. Some carriers write hurricane coverage separately, and some condo master policies handle the building while your walls-in policy handles the inside.

Flood is almost always excluded. Storm surge is flood. Rain that pools and enters your home is flood. If your mortgage lender says you are in a FEMA flood zone, you will be required to carry flood insurance. If you are not in a zone, you can still buy it — and in Hawaii, that is often the gap that hurts. Earthquake is excluded too, which matters on the Big Island, but that is a different policy.

The messy part after a storm is the wind-versus-water split. One adjuster may say wind opened the roof; another may say rising water caused the damage. Take phone video before the storm: every room, closets, the roof if you can see it safely, and the serial numbers on major appliances. Keep receipts.

If you rent, your landlord’s policy does not cover your stuff. Renters insurance is cheap; flood coverage for renters is separate.

A practical weekend plan

If you have one weekend and a limited budget, I’d spend the first hour reading your insurance declarations page, not standing in line for plywood.

1. Read the policy. Find your hurricane deductible, your flood exclusion, and your wind coverage. Call your agent with two questions: “What is my named-storm deductible?” and “Does my policy cover storm surge?”
2. Check the roof and lanai. Look for loose shingles, rusted screws, and failed sealant. In Hawaii, many older homes have single-wall construction; a roof-to-wall retrofit matters more than new paint.
3. Clear the yard. Trim trees away from the house, tie down or store surfboards, coolers, propane tanks, and lanai furniture. Do this in good weather, not when a watch is posted.
4. Document everything. Walk room to room with your phone. Open closets. Film the underside of the eaves. Store the video in the cloud and email it to yourself.
5. Build a basic kit. Water, food, meds, flashlight, batteries, radio, chargers, documents in a zipper bag. Ready.gov has a list. You do not need a bunker; you need two weeks of the boring stuff.
6. Know your zone. Check HIEMA and your county civil defense for evacuation maps. If you live in a flood zone or a low-lying coastal area, decide now where you will go and how you will get there.

Do not tape windows. Ready.gov and NOAA both say it does not help and can make cleanup worse.

Questions we get

Do I need hurricane insurance in Hawaii if I live inland?

Not by law, but wind can reach far inland, and rain flooding is not covered by most homeowners policies. If you have a mortgage in a FEMA flood zone, your lender will require flood insurance. If you are inland but in a low spot, ask about flood anyway.

Is flood insurance required for Hawaii homes?

Only if your lender requires it, usually because the home is in a high-risk FEMA flood zone. But many floods in Hawaii happen outside those zones. NFIP policies typically have a 30-day waiting period, so do not wait for a storm to be named. If you are buying, ask for a flood elevation certificate and a quote before you close.

What should I do first if a hurricane is forecast for Hawaii?

Follow HIEMA, the National Weather Service in Honolulu, and your county civil defense. Fill water containers, charge devices, and secure your lanai. If you are in an evacuation zone, go early. If you have time for one thing, move your important documents and medications into a waterproof bag and put it in your car.

Official maps and agencies

Start with these. They are the ones we use when we check a Hawaii address.

• Hawaii Emergency Management Agency (HIEMA)
• NOAA National Hurricane Center
• Ready.gov – Hurricanes
• FEMA Hurricane Preparedness

If you are checking a specific address, look at the FEMA flood map for the parcel and ask your county planning department about hurricane evacuation zones.