Mount Tanzawa

Mountain Mountain in Tanzawa Range popular for hiking

West of Tokyo, Mount Tanzawa provides day‑hike trails, ridgelines and seasonal beech and maple woods popular with weekend hikers from the metropolitan area.

Main image

Mount Tanzawa (丹沢山) is a mountain in Kanagawa Prefecture and a central summit of the Tanzawa range, noted for its alpine ridge terrain and established hiking routes. Its summit elevation is 1567 metres.

Hikers follow ridge trails and multi-day routes that link to nearby peaks in the Tanzawa range; clear days offer long-distance views including Mount Fuji. Routes vary from steep single-day ascents to longer traverses that require overnight stays at mountain huts.

The peak is a natural mountain long used for recreation; it is part of the Tanzawa-Oyama Quasi-National Park and has long-standing trail infrastructure rather than a single historic construction. Mountain huts and marked trails have developed to support recreational use.

The mountain sits in western Kanagawa Prefecture within the Tanzawa Mountains, in a forested and rugged landscape northwest of coastal Kanagawa lowlands and within reasonable travel from the greater Tokyo-Yokohama region.

  • Elevation: 1567 metres above sea level, making it one of the higher summits in the Tanzawa range.
  • Park and access: Located inside the Tanzawa-Oyama Quasi-National Park, with established trail networks and mountain huts on popular routes.
Mount Tanzawa
Mount Tanzawa, Tanzawa-Ōyama Quasi-National Park, Kanagawa Prefecture, Japan
35.4743, 139.1629
Google Maps Apple Maps
https://www.env.go.jp/en/park/kanagawa/
Open 24 hours (park managed areas observed daylight hours)
Free (trails access).

How to Get to Mount Tanzawa #

From Shinjuku, take the Odakyu Line to Hon-Atsugi and transfer to local buses toward Yabitsu Pass or other Tanzawa trailheads. Alternatively, drive via Kanagawa Prefectural Route 64 to various parking areas near trail starts.

Tips for Visiting Mount Tanzawa #

  • Use the Odakyu or local bus services to get to trailheads early in the day; weekday mornings are quietest.
  • The trail network connects with the Tanzawa-Ōyama Quasi-National Park-consider looping routes that include waterfalls and ridgelines.
  • The Kanagawa side trailheads are steeper; the Yabitsu Passage is the gentlest for long day hikes.

Best Time to Visit Mount Tanzawa #

Spring and autumn are the best seasons for comfortable hiking and clear views; avoid the heavy rain season around June.

Spring (March-May)
Mar-May · 5-20°C (41-68°F)
Cool days and cherry blossoms at lower elevations; comfortable hiking.
Autumn (September-November)
Sep-Nov · 5-18°C (41-64°F)
Crisp air and fall colors; prime season for views and fewer insects.

Weather & Climate near Mount Tanzawa #

Climate

Mount Tanzawa's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with warm summers (peaking in August) and freezing winters (coldest in February). Temperatures range from -6°C to 24°C. Abundant rainfall (1909 mm/year), wettest in August.

Best Time to Visit
AugustJulyMay
Temperature & Rainfall
Temperature Range
37°
Warmest Month
-7°
Coldest Month
Monthly Conditions

January

January is freezing with highs of 4°C and lows of -6°C. Moderate rainfall (44 mm) and breezy conditions.

56 Acceptable

Comfort

-1°
Feels Like Freezing
-1°C
Temperature
-6° – 4°
77%
Humidity
Very Humid

Weather

44 mm
Rainfall
6.4 m/s
Wind
Breezy
0.4
UV Index
Low
9.9h daylight

February

February is the coldest month with highs of 4°C and lows of -6°C. Moderate rainfall (65 mm), partly cloudy skies, and breezy conditions.

50 Acceptable

Comfort

-1°
Feels Like Freezing
-1°C
Temperature
-6° – 4°
77%
Humidity
Very Humid

Weather

65 mm
Rainfall
6.5 m/s
Wind
Breezy
0.6
UV Index
Moderate
10.8h daylight

March

March is cold with highs of 7°C and lows of -3°C. Significant rainfall (111 mm) and partly cloudy skies.

48 Poor

Comfort

2°
Feels Like Cold
2°C
Temperature
-3° – 7°
77%
Humidity
Very Humid

Weather

111 mm
Rainfall
5.6 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
11.8h daylight

April

April is cold with highs of 12°C and lows of 2°C. Significant rainfall (146 mm), partly cloudy skies, and breezy conditions.

50 Acceptable

Comfort

7°
Feels Like Cold
7°C
Temperature
2° – 12°
78%
Humidity
Very Humid

Weather

146 mm
Rainfall
6.2 m/s
Wind
Breezy
1.2
UV Index
High
13.0h daylight

May

May is cool with highs of 17°C and lows of 7°C. Significant rainfall (170 mm) and partly cloudy skies.

60 Good

Comfort

12°
Feels Like Cool
12°C
Temperature
7° – 17°
79%
Humidity
Very Humid

Weather

170 mm
Rainfall
5.3 m/s
Wind
Light Breeze
1.4
UV Index
High
13.9h daylight

June

June is cool with highs of 19°C and lows of 11°C. Heavy rain (240 mm) and mostly overcast skies.

54 Acceptable

Comfort

15°
Feels Like Cool
15°C
Temperature
11° – 19°
83%
Humidity
Very Humid

Weather

240 mm
Rainfall
4.9 m/s
Wind
Light Breeze
1.4
UV Index
High
14.4h daylight

July

July is mild with highs of 23°C and lows of 15°C. Heavy rain (213 mm) and mostly overcast skies.

64 Good

Comfort

19°
Feels Like Mild
19°C
Temperature
15° – 23°
84%
Humidity
Very Humid

Weather

213 mm
Rainfall
4.3 m/s
Wind
Light Breeze
1.6
UV Index
Very High
14.1h daylight

August

August is the warmest month with muggy conditions (dew point 22°C). The wettest month with heavy rain (306 mm) and partly cloudy skies.

68 Good

Comfort

20°
Feels Like Mild
20°C
Temperature
16° – 24°
82%
Humidity
Very Humid

Weather

306 mm
Rainfall
4.9 m/s
Wind
Light Breeze
1.7
UV Index
Very High
13.3h daylight

September

September is cool with highs of 20°C and lows of 13°C. Heavy rain (281 mm) and mostly overcast skies.

56 Acceptable

Comfort

17°
Feels Like Cool
17°C
Temperature
13° – 20°
84%
Humidity
Very Humid

Weather

281 mm
Rainfall
5.1 m/s
Wind
Light Breeze
1.2
UV Index
High
12.3h daylight

October

October is cool with highs of 15°C and lows of 7°C. Significant rainfall (196 mm), partly cloudy skies, and breezy conditions.

58 Acceptable

Comfort

11°
Feels Like Cool
11°C
Temperature
7° – 15°
84%
Humidity
Very Humid

Weather

196 mm
Rainfall
6.1 m/s
Wind
Breezy
0.8
UV Index
Moderate
11.2h daylight

November

November is cold with highs of 12°C and lows of 2°C. Regular rainfall (95 mm), partly cloudy skies, and breezy conditions.

58 Acceptable

Comfort

7°
Feels Like Cold
7°C
Temperature
2° – 12°
82%
Humidity
Very Humid

Weather

95 mm
Rainfall
6.1 m/s
Wind
Breezy
0.5
UV Index
Low
10.2h daylight

December

December is cold with highs of 7°C and lows of -3°C. Moderate rainfall (42 mm).

58 Acceptable

Comfort

2°
Feels Like Cold
2°C
Temperature
-3° – 7°
79%
Humidity
Very Humid

Weather

42 mm
Rainfall
5.9 m/s
Wind
Light Breeze
0.3
UV Index
Low
9.7h daylight

Nearby Attractions to Mount Tanzawa

Tanzawa Mountains
Tanzawa Mountains
Mountain range west of Tokyo with hiking trails
Mountains 2.8 km
Mount Ōyama (Kanagawa)
Mount Ōyama (Kanagawa)
Sacred Kanagawa mountain with ancient shrines and views
Mountain 7.3 km
Lake Sagami
Lake Sagami
Reservoir in Kanagawa Prefecture supplying water and recreation
Lake 15.7 km
Shasui Falls
Shasui Falls
Scenic waterfall near Hakone, popular for views
Waterfall 16.4 km
Mount Takao
Mount Takao
Accessible Tokyo mountain with historic temple and trails
Mountain 17.7 km
Yuhi Falls
Yuhi Falls
Scenic Kanagawa waterfall popular with local hikers
Waterfall 22.1 km
Mount Ashigara
Mount Ashigara
Mountain on Kanagawa boundary with views of Fuji
Mountain 25.0 km
Lake Yamanaka
Lake Yamanaka
One of Mount Fuji's five lakes, recreational area
Lake 26.9 km