Mount Kumotori | TravelDojo

Mount Kumotori is a mountain on the boundary of Tokyo Metropolis and neighbouring prefectures, notable as Tokyo’s highest point. It forms part of the Okuchichibu mountain range.

Hikers use well-marked ridgelines and trails that connect to nearby mountain huts and passes, making it a common multi-day route for walkers exploring the Chichibu-Tama-Kai and Okuchichibu ranges. The summit provides broad views over wooded slopes and, in clear weather, distant mountain ranges.

The mountain has long been part of traditional transit and pilgrimage routes linking interior valleys and passes; over the 20th century it became established in modern walking guides and regional conservation planning. Trails and small shelters were developed to support recreational hiking.

Located in the western reaches of Tokyo Metropolis, the summit sits on the border with Saitama and Yamanashi prefectures. Access is typically from the Okutama and surrounding mountain towns via trailheads and forest roads.

Highest point in Tokyo: At about 2,017 metres it is the highest peak within Tokyo Metropolis and marks a boundary between Tokyo and neighbouring prefectures.

Tips for Visiting Mount Kumotori #

Start very early from the usual Okutama/West‑Tokyo trailheads to avoid weekend crowds and to reach the summit ridge before afternoon winds pick up; Kumotori is Tokyo's highest peak so it attracts many hikers on good-weather days.
Use the established trails from Okutama (the common access point) and check trailhead parking/bus schedules the day before-public transport connections are limited outside peak season.
If you want fewer people on the summit, choose a weekday or an off‑season shoulder month; many day‑hikers concentrate on weekends, while weekday visitors are far fewer.

Best Time to Visit Mount Kumotori #

Best from late spring through autumn (May-October) when trails are clear; winter ascents require winter skills and gear.

Summer (best for trail access)

Jun-Aug · 10°C to 20°C

Trails are usually clear and pleasant for day hikes; summit areas remain noticeably cooler than lowlands.

Autumn (leaf-peeping)

Sep-Oct · 0°C to 15°C

Clearer air and autumn colors; first frosts and early snow are possible later in the season.

Winter (snow and ice)

Dec-Mar · -10°C to 0°C

Snow-covered routes and icy conditions make ascents more technical-winter mountaineering experience required.

Weather & Climate near Mount Kumotori #

Climate

Mount Kumotori's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with mild summers (peaking in August) and freezing winters (coldest in January). Temperatures range from -8°C to 23°C. Abundant rainfall (1863 mm/year), wettest in August.

Best Time to Visit

AugustNovemberDecember

Temperature & Rainfall

Temperature Range

34°

Warmest Month

-15°

Coldest Month

Monthly Conditions

January

January is the coldest month with highs of 1°C and lows of -8°C. Moderate rainfall (35 mm) and partly cloudy skies.

47 Poor

Comfort

-4°

Feels Like Freezing

-4°C

Temperature

-9° – 1°

83%

Humidity

Very Humid

Weather

35 mm

Rainfall

5.0 m/s

Wind

Light Breeze

0.4

UV Index

Low

9.9h daylight

February

February is the coldest month with highs of 1°C and lows of -8°C. Moderate rainfall (57 mm) and partly cloudy skies.

45 Poor

Comfort

-4°

Feels Like Freezing

-4°C

Temperature

-8° – 1°

82%

Humidity

Very Humid

Weather

57 mm

Rainfall

5.6 m/s

Wind

Light Breeze

0.6

UV Index

Moderate

10.8h daylight

March

March is freezing with highs of 4°C and lows of -6°C. Regular rainfall (100 mm) and partly cloudy skies.

44 Poor

Comfort

-1°

Feels Like Freezing

-1°C

Temperature

-6° – 4°

78%

Humidity

Very Humid

Weather

100 mm

Rainfall

5.1 m/s

Wind

Light Breeze

0.9

UV Index

Moderate

11.8h daylight

April

April is cold with highs of 10°C and lows of 0°C. Significant rainfall (140 mm) and partly cloudy skies.

52 Acceptable

Comfort

5°

Feels Like Cold

5°C

Temperature

0° – 10°

76%

Humidity

Very Humid

Weather

140 mm

Rainfall

5.2 m/s

Wind

Light Breeze

1.2

UV Index

High

13.0h daylight

May

May is cold with highs of 15°C and lows of 4°C. Significant rainfall (165 mm) and mostly overcast skies.

56 Acceptable

Comfort

10°

Feels Like Cold

10°C

Temperature

4° – 15°

76%

Humidity

Very Humid

Weather

165 mm

Rainfall

4.8 m/s

Wind

Light Breeze

1.5

UV Index

High

13.9h daylight

June

June is cool with highs of 18°C and lows of 9°C. Heavy rain (245 mm) and mostly overcast skies.

52 Acceptable

Comfort

13°

Feels Like Cool

13°C

Temperature

9° – 18°

81%

Humidity

Very Humid

Weather

245 mm

Rainfall

4.3 m/s

Wind

Light Breeze

1.5

UV Index

High

14.4h daylight

July

July is cool with highs of 21°C and lows of 13°C. Heavy rain (234 mm) and mostly overcast skies.

54 Acceptable

Comfort

17°

Feels Like Cool

17°C

Temperature

13° – 21°

83%

Humidity

Very Humid

Weather

234 mm

Rainfall

3.8 m/s

Wind

Light Breeze

1.6

UV Index

Very High

14.1h daylight

August

August is the warmest month with highs of 23°C and lows of 14°C. The wettest month with heavy rain (314 mm) and mostly overcast skies.

64 Good

Comfort

18°

Feels Like Mild

18°C

Temperature

14° – 23°

83%

Humidity

Very Humid

Weather

314 mm

Rainfall

4.3 m/s

Wind

Light Breeze

1.7

UV Index

Very High

13.3h daylight

September

September is cool with highs of 19°C and lows of 11°C. Heavy rain (282 mm) and mostly overcast skies.

54 Acceptable

Comfort

15°

Feels Like Cool

15°C

Temperature

11° – 19°

85%

Humidity

Very Humid

Weather

282 mm

Rainfall

4.0 m/s

Wind

Light Breeze

1.3

UV Index

High

12.3h daylight

October

October is cold with highs of 13°C and lows of 5°C. Significant rainfall (174 mm) and partly cloudy skies.

50 Acceptable

Comfort

9°

Feels Like Cold

9°C

Temperature

5° – 13°

85%

Humidity

Very Humid

Weather

174 mm

Rainfall

5.1 m/s

Wind

Light Breeze

0.9

UV Index

Moderate

11.2h daylight

November

November is cold with highs of 9°C and lows of -1°C. Regular rainfall (84 mm) and partly cloudy skies.

60 Good

Comfort

4°

Feels Like Cold

4°C

Temperature

-1° – 9°

84%

Humidity

Very Humid

Weather

84 mm

Rainfall

4.2 m/s

Wind

Light Breeze

0.5

UV Index

Moderate

10.2h daylight

December

December is freezing with highs of 4°C and lows of -5°C. Moderate rainfall (33 mm).

58 Acceptable

Comfort

-1°

Feels Like Freezing

-1°C

Temperature

-5° – 5°

83%

Humidity

Very Humid

Weather

33 mm

Rainfall

5.0 m/s

Wind

Light Breeze

0.4

UV Index

Low

9.7h daylight

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