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Mount Nantai

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Mount Nantai Weather and climate

Data source：Meteostat
Update date：2025-09

Mount Nantai year round climate
  • Spring (March–May): 34–51°F on average, cold and humid climate with significant rainfall and occasional snowfall. Common activities: Hiking (be sure to dress warmly and check trail conditions), enjoying mountain views. Recommended clothing: Warm jacket, waterproof pants and jacket, hiking boots.
  • Summer (June–August): 58–68°F on average, cool climate with significant rainfall and high humidity. Common activities: Hiking (be sure to protect yourself from rain), admiring alpine plants. Recommended clothing: Breathable waterproof jacket, quick-drying pants and shirt, hiking boots.
  • Autumn (September–November): 50–63°F on average, cool and comfortable climate with gradually decreasing rainfall. Common activities: Hiking, enjoying autumn leaves (depending on altitude). Recommended clothing: Light jacket, long-sleeved shirt and pants.
  • Winter (December–February): -3.7–-33.4°F on average, cold and dry climate with a high probability of snowfall. Common activities: Skiing (depending on snow conditions), enjoying snow scenery. Recommended clothing: Warm down jacket, waterproof snow pants, snow boots.
Mount Nantai climatological average

Annual average temperature: approx. 46.2°F / Annual rainfall: approx. 1974 mm / Summer humidity: 70%–80% / Rainiest month: August

Mount Nantai monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
25.3°F
43.3
February
26.6°F
60.7
March
34.3°F
142.1
April
44.8°F
148.4
May
51.1°F
254.7
June
58.8°F
232
July
67.8°F
198.4
August
68°F
335.4
September
63.3°F
279.4
October
50°F
145.4
November
41.7°F
107.7
December
30.6°F
27
Mount Nantai weather for the next seven days
10/22
Wednesday
Patchy rain nearby
51.5°F/41°F
10/23
Thursday
Sunny
57.8°F/39°F
10/24
Friday
Patchy rain nearby
59.7°F/40.3°F
10/25
Saturday
Patchy rain nearby
58.8°F/40.9°F
10/26
Sunday
Heavy rain
55.4°F/50°F
10/27
Monday
Patchy rain nearby
65.3°F/48.6°F
10/28
Tuesday
Sunny
57.1°F/40.9°F

Mount Nantai FAQ

How long does it take to hike Mount Nantai?
The four-kilometer mountain trail to Mount Nantai's summit takes approximately seven hours for a round trip. The trail is open annually from April 25th to November 11th and is considered fairly tough, making it suitable only for experienced trekkers.
Is Mount Nantai a volcano?
Yes, Mount Nantai is a conical volcano with an elevation of 2,486 meters. It has been revered as a sacred object of worship since ancient times, particularly for the Nikko Futarasan Shrine.
What is Mount Nantai known for?
Mount Nantai is revered as a sacred object of worship and is also known as "Futarasan." At its summit stands the Okumiya Shrine of Futarasan Shrine, a testament to its historical and spiritual significance.
What are the best times to visit Mount Nantai?
The hiking trail to Mount Nantai is open from April 25th to November 11th each year. Visitors can enjoy the natural beauty and spiritual atmosphere during these months, with autumn offering particularly stunning scenery.
Can beginners hike Mount Nantai?
Due to its challenging four-kilometer trail and seven-hour round trip, Mount Nantai is generally recommended for experienced trekkers. Beginners may find the hike too strenuous and should consider alternative activities in the Nikko area.