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Tokyo weather

Warning guide

What the Japan Meteorological Agency’s warnings mean, and when each is raised. Tokyo’s active ones show on this page while in force.

Emergency Warning

Reserved for once-in-decades disasters. Take action to protect your life immediately — follow evacuation guidance.

  • Snowstorm Emergency Warning The once-in-decades tier of the snowstorm warning.
  • Heavy Rain Emergency Warning The once-in-decades tier of the heavy rain warning.
  • Storm Emergency Warning The once-in-decades tier of the storm warning.
  • Heavy Snow Emergency Warning The once-in-decades tier of the heavy snow warning.
  • High Wave Emergency Warning The once-in-decades tier of the high wave warning.
  • Storm Surge Emergency Warning The once-in-decades tier of the storm surge warning.

Warning

Serious damage is expected — flooding, landslides, structural damage. Reconsider going out; transport may stop.

  • Snowstorm Warning Violent wind with heavy snow — whiteouts and transport shutdowns likely.
  • Heavy Rain Warning Rain heavy enough to trigger landslides or flooding.
  • Flood Warning Rivers expected to rise to flood level.
  • Storm Warning Winds strong enough to damage buildings and stop trains.
  • Heavy Snow Warning Snowfall heavy enough to paralyse transport.
  • High Wave Warning Waves dangerous to anyone on or near the water.
  • Storm Surge Warning Sea level driven up by a storm — coastal flooding possible.

Advisory

Caution level — conditions that can disrupt plans or transport. Common in Tokyo; check before long trips.

  • Heavy Rain Advisory Rain that can cause localised flooding or small slides.
  • Heavy Snow Advisory Snow that can disrupt roads and rail.
  • Snow & Wind Advisory Wind-blown snow cutting visibility.
  • Thunderstorm Advisory Lightning, sudden squalls, possible hail — near-daily in Tokyo summers.
  • Strong Wind Advisory Wind that can topple bikes and scatter loose objects.
  • High Wave Advisory Rough seas — care on waterfronts.
  • Flood Advisory Rivers rising; low-lying paths may flood.
  • Storm Surge Advisory Elevated sea level along the bay.
  • Dense Fog Advisory Visibility low enough to disrupt transport.
  • Dry Air Advisory Fire-prone dryness — common in Tokyo winters.
  • Low Temperature Advisory Cold sharp enough to burst pipes or damage crops.
  • Frost Advisory Frost expected — mainly a spring and autumn note.
  • Icing Advisory Ice forming on surfaces and structures.
  • Snow Accretion Advisory Wet snow sticking to power lines and trees.

Japan Meteorological Agency (気象庁)

Today's high
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Chance of rain
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Observation and forecast: Japan Meteorological Agency

The week ahead

Across Japan

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