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Batholith CC BY-SA 4.0 Wikimedia Commons

Amagi Sanmyaku

Mountains

The Amagi mountain range on the Izu Peninsula offers forested ridges, waterfalls and coastal views. Hikers pass through hot-spring towns and come for autumn colour and seaside panoramas.

Amagi Sanmyaku Map data © OpenStreetMap contributorsShizuokaToro IsekiAmagi Sanmyaku
In this guide

Amagi Sanmyaku essentials

Country: Japan
Driest months: Dec-Feb
Pay in: Yen (¥)
Emergency: 110

Amagi Sanmyaku at a Glance

When to Go

Best Time to Visit Amagi Sanmyaku

Amagi's passes and ridgelines are most congenial in spring and autumn; summer brings heat and mosquitos, winter can close higher routes.

Spring
March-May · 10-20°C
Cherry blossoms lower on the slopes in late March-April; mountain roads are cooler and pleasantly fragrant.
Autumn
September-November · 10-18°C
Clear days, good visibility and autumn color on the ridges-best for hiking and photography.

Weather & Climate near Amagi Sanmyaku

Climate

Amagi Sanmyaku's climate is classified as Humid Subtropical - Humid Subtropical climate with warm summers (peaking in August) and cold winters (coldest in January). Temperatures range from -2°C to 26°C. Heavy rainfall (2060 mm/year), wettest in September.

Air Quality: AQI 46 Good
Best Time to Visit
AugustSeptemberJuly
Temperature & Rainfall
Temperature Range
34°
Warmest Month
-2°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Poor -2° - 7° -2° 65 mm partly cloudy 70% 6.3 m/s 0.4 low 10.0h
February Poor -2° - 7° -2° 85 mm partly cloudy 71% 6.0 m/s 0.6 moderate 10.8h
March Acceptable 1° - 10° 1° 144 mm partly cloudy 73% 5.9 m/s 0.9 moderate 11.8h
April Acceptable 6° - 15° 11° 168 mm partly cloudy 76% 5.9 m/s 1.2 high 12.9h
May Acceptable 10° - 19° 15° 184 mm overcast 80% 5.2 m/s 1.5 high 13.8h
June Acceptable 14° - 21° 18° 261 mm overcast 85% 4.7 m/s 1.5 very high 14.3h
July Good 18° - 25° 21° 204 mm overcast 87% 4.7 m/s 1.8 very high 14.1h
August Very Good 19° - 26° 23° 275 mm partly cloudy 85% 4.8 m/s 1.8 very high 13.3h
September Good 16° - 23° 20° 277 mm partly cloudy 83% 4.8 m/s 1.4 high 12.3h
October Acceptable 11° - 18° 15° 215 mm partly cloudy 80% 6.4 m/s 0.9 moderate 11.2h
November Acceptable 6° - 14° 10° 120 mm partly cloudy 76% 6.0 m/s 0.5 moderate 10.2h
December Acceptable 1° - 10° 2° 62 mm partly cloudy 72% 6.0 m/s 0.4 low 9.7h
Getting There & Around

How to Get to Amagi Sanmyaku

By rail: Take the JR Tokaido Line to Atami or the Izukyu Line to Shuzenji; from either station hire a car or take local buses toward Amagi Pass (look for signs to Amagi-tōge). By road: the Izu-Jūkan and local prefectural roads connect the peninsula-Route 11 and smaller mountain roads climb to the pass. Cycling is common on the established pass routes.

Tips for Visiting Amagi Sanmyaku

  • Start early at the Amagi Pass to avoid weekend drivers and crowds from nearby Shimoda and Atami.
  • If driving, use Route 11 (Izu-Jūkan Road) on the Izu Peninsula and look for signs to Amagi-tōge (Amagi Pass).
  • Pack for sudden weather changes-Amagi's microclimate can drop temperature and fog in an hour.