Recent signals
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- stormGDACS1w agoGreen notification for tropical cyclone JANGMI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 1.274 million .From 27/05/2026 to 03/06/2026, a Tropical Storm (maximum wind speed of 139 km/h) JANGMI-26 was active in NWPacific. The cyclone affects these countries: Japan (vulnerability Low). Estimated population affected by category 1 (120 km/h) wind speeds or higher is 1.274 million .Source →-3.0
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- floodGDACS1w agoGreen flood alert in JapanOn 22/05/2026, a flood started in Japan, lasting until 23/05/2026 (last update). The flood caused 0 deaths and 0 displaced .Source →-3.0
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Foreign-ministry advisories
Practical guidance
What the disaster sub-score covers
Japan’s natural-disaster sub-score is 0/100 (high band). It combines the country’s long-term hazard exposure (fault lines, tropical cyclone tracks, volcanic chains, flood basins) with the live event feed from USGS, NOAA, NHC, JMA, GVP, and regional agencies. A score drop usually means a specific recent event; baseline hazard exposure barely moves year over year. The events feed above shows what is currently active.
Seasonality matters more than the headline number
Most natural-hazard risk is seasonal. Atlantic hurricane season runs June through November (peak August to October). Pacific typhoon season is broadly May to October. Indian Ocean monsoon flooding peaks June to September in South Asia. North Atlantic storm surge weights winter months. Volcanic and seismic risk is non-seasonal but clusters geographically; a country’s baseline score factors this in, but your specific itinerary’s exposure depends on which region you visit. The country safety guide’s natural- hazards chapter breaks it down by region.
What to actually do
Three concrete steps that move you out of the “tourist who got caught in it” bucket: enrol in your government’s traveller-notification programme (STEP for US citizens, LOCATE for UK, Smartraveller subscription for AU) so embassies can reach you in a major incident; download offline maps of your destination before you arrive (Maps.me or Google Maps offline) because mobile networks fail first in most disasters; and read the relevant Field Manual response guide for the specific hazard your destination carries. How to survive an earthquake while travelling and the wildfire, flood, and hurricane equivalents are linked from the relevant country safety guides.
Related for Japan
Long-form context
Japan is statistically among the safest large countries in the world. Crime against tourists is rare; the relevant risks are seismic, meteorological, and procedural. This guide covers what to do when the ground moves, when typhoons close transport, how the world-class healthcare system actually works for foreigners, and the small set of cultural conventions that make a difference.
Frequently asked about Japan
What natural hazards affect Japan?
Japan's natural-disaster sub-score is 0/100. It combines long-term hazard exposure (fault lines, tropical cyclone tracks, volcanic chains, flood basins) with the live event feed from USGS, NOAA, NHC, JMA, GVP, and regional agencies. Currently active events are listed in the recent-signals feed above.
When is hurricane / typhoon season in Japan?
Atlantic hurricane season runs June through November (peak August to October). Pacific typhoon season is broadly May to October. Indian Ocean cyclone season splits between November to April (southern hemisphere) and April to December (Bay of Bengal). Japan's specific exposure window is documented in the country safety guide.
What should I do if a natural disaster happens while I am in Japan?
Three concrete steps before you go: enrol in your government's traveller-notification programme (STEP for US, LOCATE for UK, Smartraveller subscription for AU), download offline maps because mobile networks fail first in major incidents, and read the relevant Field Manual response guide (earthquake, hurricane, wildfire, flood) for the specific hazard your destination carries.