Mount MiharaMount Mihara at a Glance
About Mount Mihara
Mount Mihara is an active volcanic peak on Izu Ōshima, one of the Izu Islands administered by Tokyo Prefecture. The volcano features a prominent summit crater and is the island’s main geomorphological feature.
Hiking routes lead toward the crater rim and offer coastal and island views; the summit area includes fumarolic activity and recent lava deposits in places. The mountain has a history of periodic eruptions and is monitored for volcanic activity.
Izu Ōshima lies south of the Izu Peninsula and is reached by scheduled ferries and occasional flights from the Tokyo region; the island’s transport links and visitor services are oriented around access to the volcano and coastal attractions.
- Access and hazards: The volcano is a dominant landmark on Izu Ōshima and is reached by ferry or air services from the Tokyo region; volcanic activity and gas emissions can restrict access at times.
What to See#
- Summit crater: The summit contains a large crater rim and accessible viewpoints around the depression that attract hikers and visitors to Izu Oshima.
Nearby Attractions to Mount Mihara
Best Time to Visit Mount Mihara
Most visitors come between spring and autumn for comfortable hiking and easy ferry connections from Tokyo.
Weather & Climate near Mount Mihara
Mount Mihara's climate is classified as Humid Subtropical - Humid Subtropical climate with warm summers (peaking in August) and cold winters (coldest in February). Temperatures range from 0°C to 27°C. Heavy rainfall (2166 mm/year), wettest in September.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Acceptable | 0° - 9° | 1° | 81 mm | partly cloudy | 69% | 6.4 m/s | 0.4 low | 10.0h |
| February | Acceptable | 0° - 9° | 0° | 100 mm | partly cloudy | 71% | 6.0 m/s | 0.6 moderate | 10.8h |
| March | Acceptable | 3° - 11° | 4° | 164 mm | partly cloudy | 71% | 5.5 m/s | 0.9 moderate | 11.8h |
| April | Good | 8° - 16° | 12° | 178 mm | partly cloudy | 75% | 5.6 m/s | 1.2 high | 12.9h |
| May | Acceptable | 12° - 20° | 16° | 196 mm | overcast | 81% | 4.9 m/s | 1.5 high | 13.8h |
| June | Good | 15° - 22° | 19° | 268 mm | overcast | 88% | 4.7 m/s | 1.5 very high | 14.3h |
| July | Good | 19° - 25° | 22° | 198 mm | overcast | 90% | 4.3 m/s | 1.8 very high | 14.1h |
| August | Very Good | 20° - 27° | 23° | 253 mm | partly cloudy | 87% | 4.9 m/s | 1.8 very high | 13.3h |
| September | Very Good | 17° - 24° | 21° | 274 mm | partly cloudy | 82% | 4.6 m/s | 1.4 high | 12.3h |
| October | Acceptable | 12° - 20° | 16° | 236 mm | partly cloudy | 76% | 6.3 m/s | 0.9 moderate | 11.2h |
| November | Good | 8° - 16° | 12° | 142 mm | partly cloudy | 72% | 5.7 m/s | 0.5 moderate | 10.2h |
| December | Acceptable | 3° - 12° | 4° | 76 mm | partly cloudy | 70% | 5.8 m/s | 0.4 low | 9.7h |
How to Get to Mount Mihara
Regular ferries and high-speed boats run from Tokyo ports (such as Takeshiba and Tokyo-Wan) to Izu Oshima; the crossing time varies from about 45 minutes (high-speed) to several hours (ferry). Once on the island, local buses and taxis connect to the trailheads for Mihara.
Tips for Visiting Mount Mihara
- From Tokyo, Ferries or local tour operators can arrange boat trips to Izu Oshima; check schedules in advance.
- Observe volcanic activity advisories-Mihara is an active volcano and access can be restricted.
- Bring windproof clothing; the island's exposed coastal ridges can be surprisingly cold.