Introduction
In August 2025, a serious bear-related incident occurred in Okutama, Tokyo. A man in his 50s, enjoying stream fishing, was attacked by a bear cub and suffered facial injuries. Fortunately, his life was not in danger, but the incident highlighted that bear encounters in Okutama have entered a new and alarming stage.
As the autumn foliage season approaches, hikers and outdoor enthusiasts are urged to take safety precautions more seriously than ever before.
About ten years ago, I frequently visited Okutama for hiking (about 5–6 times a year). At the time, there were warning signs about bears, but I never encountered one. The most common wildlife sightings were deer, occasionally monkeys, and if you were lucky, the Japanese serow like the one shown in the photo below. A decade later, however, the situation with bears in Okutama is changing. This article summarizes the current risks to raise awareness.
Japanese Serow (photo: Tokyo Metropolitan Government website)
The Surge of Bear Sightings in Okutama (2025)
A sharp increase in sightings
Between April and the end of July 2025, there were 68 reported sightings of Asiatic black bears in Okutama alone. Compared to the same period last year, this marks a significant increase, showing that bear activity is more intense than usual.
Human injury incident
On the evening of August 23, a man fishing in a river in Okutama was attacked by a cub and injured in the face. This is a serious case where a bear encounter resulted in actual human harm.
Culling numbers show the severity
From April to July 2025, five bears were culled after appearing near residential areas. This is a clear warning that bears are increasingly entering human living spaces.
Bear Hotspot Map in Okutama｜Areas Requiring Extra Caution
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Hikawa District (near Okutama Station): Numerous sightings around trailheads and tourist spots
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Mount Mitake to Mount Odake: Popular hiking routes with frequent bear appearances
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Streams in the Tama River system: Location of the recent injury incident
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Mountain areas of Hachioji & Akiruno: Even near residential neighborhoods
👉 Always check the Tokyo Metropolitan Bear Sighting Map for the latest updates.
Why Autumn Is Especially Dangerous
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Bears increase activity to fatten up before hibernation
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They are highly attracted to human food or garbage
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Their range expands, and they may appear in unusual locations
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Cubs with mothers make encounters particularly risky
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Decreased wariness raises the chances of human-bear conflicts
Must-Read for Hikers｜Bear Safety Checklist
Equipment
✅ Bear bells (with a silencer function for convenience)
✅ Bear spray (keep it on your belt for quick access)
✅ Headlamp, whistle, and other emergency gear
Behavior
✅ Avoid hiking alone—group travel is safer
✅ Refrain from early morning or dusk activities
✅ Stay alert and make your presence known with voices or footsteps
Emergency Response Manual in Case of Encounter
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Do not run – Running may trigger a chase
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Do not turn your back – Keep the bear in sight while backing away slowly
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Retreat calmly – Loud noises or aggression can provoke a bear
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Use bear spray only as a last resort – Learn how to use it beforehand
Emergency Contacts
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Okutama Town Office: 0428-83-2295
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Police: Dial 110
Conclusion｜For a Safe Autumn Outdoors
In autumn 2025, Okutama faces an unprecedented risk of bear encounters. To safely enjoy hiking and fishing in the beautiful foliage season, please remember these 4 Golden Rules:
🔻 Bear Safety Guidelines
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Check the latest bear sighting information
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Carry bear bells and spray
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Avoid solo hikes and adjust activity times
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Know the correct response if you encounter a bear
Safety in nature depends on preparation and awareness. By respecting wildlife and keeping a safe distance, you can enjoy the autumn beauty of Okutama with peace of mind.
※ This article is based on information available as of August 26, 2025. For the latest updates, please refer to the official website of the Tokyo Metropolitan Government’s Environment Bureau.
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