Okinawa Storm Preparedness: What to Do When a Typhoon Hits

Why Okinawa Typhoons Are Inconvenient, Not Dangerous

If a typhoon is heading for Okinawa while you are there, the most important thing to understand is this: Okinawa is built for typhoons. According to the Okinawa Prefectural Government disaster preparedness guide, the island's buildings are reinforced concrete with storm-rated windows — a direct result of decades of typhoon experience. Hotels secure their premises automatically when a storm approaches. Locals treat typhoons the way residents of snowy cities treat blizzards: prepare, stay inside, wait it out.

For travelers, the experience is inconvenient — you will lose 1-2 days of your vacation to indoor time — but not dangerous if you follow basic preparation steps. The storm passes, infrastructure recovers within hours, and Okinawa returns to normal surprisingly fast.

This guide covers the practical actions: what to buy, when to buy it, what to do during the storm, and when it is safe to go outside afterward. For broader typhoon season timing, see our typhoon season travel guide. For flight and travel disruption advice, see the Okinawa typhoon guide. This is part of our Okinawa weather hub.

The 48-Hour Countdown: What to Do Before the Storm

48 Hours Out: Start Monitoring

When a typhoon is forecast to approach Okinawa within 48 hours, begin preparations:

• Check JMA forecasts: The Japan Meteorological Agency (気象庁) issues typhoon track projections that are reliable 48 hours out. Look for the predicted closest approach time and wind speed.
• Confirm hotel protocol: Ask your hotel front desk what their typhoon procedure is. Most Okinawa hotels have established protocols — they will explain where to go, what they provide, and when facilities close.
• Plan your final outdoor day: Use the remaining calm weather to complete any beach, snorkeling, or sightseeing plans. The day before the typhoon often has clear skies and good conditions.
• Fill your gas tank: If you have a rental car, fill it up. Gas stations close as the storm approaches.

24 Hours Out: Final Preparations

With 24 hours remaining before the typhoon's closest approach:

• Buy supplies at the convenience store (see checklist below)
• Charge all devices: Phone, tablet, portable battery pack — charge everything fully
• Fill the bathtub with water: This is standard Okinawa typhoon prep. According to the OIST typhoon guide, bathtub water provides toilet flushing capability if the water supply is temporarily disrupted.
• Move belongings away from windows: Keep luggage, electronics, and important items in the center of the room
• Download offline maps and entertainment: You may lose internet connectivity for several hours

Once the typhoon is within 12 hours, stay in your hotel. Do not go outside for any reason, even if conditions seem calm.

What to Buy at the Convenience Store

According to the OIST typhoon preparation guide, stock the following from a konbini (コンビニ) like Family Mart, Lawson, or 7-Eleven:

Essential supplies:

• Water: 2 liters per person per day, for 2 days (4L minimum per person)
• Onigiri (rice balls) and bento (boxed meals) — these do not require heating
• Cup noodles — only useful if you have a kettle in your hotel room
• Canned food with pull-tab lids (no can opener needed)
• Bread, crackers, and shelf-stable snacks
• Batteries (AA and AAA)
• A flashlight or headlamp if you do not have one
• Portable phone charger (モバイルバッテリー) — if yours is not fully charged

Useful additions:

• Wet wipes and tissues
• Hand warmers (kairo) if it is a cooler month
• A deck of cards, a book, or downloaded entertainment — you will be indoors for 24-48 hours

Buy early. Once the JMA issues typhoon warnings, convenience store shelves empty fast — especially water, onigiri, and batteries. Shopping 48 hours ahead is comfortable; 24 hours is manageable; 12 hours out may be too late for some items.

During the Typhoon: Staying Safe in Your Hotel

Once the typhoon arrives, your job is simple: stay inside.

• Keep windows and curtains closed: Reinforced glass can still crack from flying debris. Curtains provide an extra barrier.
• Stay away from windows: The center of the room is the safest position during peak wind periods.
• Do not go outside: This includes balconies, hotel gardens, and the lobby entrance. Wind speeds during a typhoon can exceed 150 km/h — strong enough to turn loose objects into projectiles.
• Do not go out during the eye: If the wind suddenly stops and the sky clears, this may be the eye of the typhoon passing over. Winds will return from the opposite direction with full force. Stay inside.
• Follow hotel staff instructions: Okinawa hotels handle typhoons routinely. If staff tell you to move to a different area, comply.

Expect power outages. Most hotels have backup generators for essential systems, but room electricity may go out for several hours. Your flashlight and charged devices cover this period.

The intense wind period typically lasts 6-12 hours. The full storm passage — from first wind bands to calm conditions — takes 24-48 hours.

After the Storm: When to Go Outside Again

Wait for the official all-clear. The JMA will downgrade warnings, and your hotel staff will communicate when it is safe to resume normal activity. Do not assume the storm is over just because the wind dies down — the eye can create a false sense of security.

Post-typhoon hazards to watch for:

• Fallen power lines: Do not touch or step over any downed wires
• Debris on roads and sidewalks: Broken glass, branches, and dislodged signage
• Flooded roads: Standing water may be deeper than it appears
• Slippery surfaces: Wet concrete and tile are extremely slippery immediately after the storm

Recovery is fast. According to the Okinawa Prefectural Government, most infrastructure — electricity, water, roads — recovers within a few hours to one day after the typhoon passes. The airport typically resumes operations within several hours to one day. Convenience stores and restaurants reopen quickly as conditions allow.

The day after a typhoon often has strikingly clear skies and calm conditions — some of the best beach weather of the entire trip.

Useful Apps and Information Sources

App/Source	Language	What It Does
JMA Weather (気象庁)	Japanese (visual icons)	Official typhoon track forecasts, warnings
NHK World	English	Emergency broadcasts, typhoon updates
Windy.com	English	Visual wind and rain tracking maps
Safety Tips (NTA)	English	Disaster alerts for foreign visitors in Japan
Hotel front desk	English/Japanese	Most direct source for local conditions

Download and test these apps before typhoon season. The JMA app is primarily in Japanese but the typhoon track maps are visual and understandable regardless of language. NHK World provides English-language emergency broadcasts on TV and via app.

For reading and understanding weather forecasts in advance, see our Okinawa weather forecast tips.