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Joetsu

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Joetsu Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Joetsu year round climate

  • Spring (March–May): Average -34–53°F, the climate transitions from cold to mild, with chances of snowfall in March; it gradually warms up starting in April. Common activities: viewing spring scenery, spring outings. Recommended clothing: warm coat, sweater, scarf, hat.
  • Summer (June–August): Average 62–71°F, warm and humid climate with more rainfall, particularly in August. Common activities: mountain hiking (be mindful of weather changes), riverside recreation. Recommended clothing: light and breathable clothing, rain gear.
  • Autumn (September–November): Average 49–62°F, comfortable and cool climate with gradually decreasing rainfall. Common activities: viewing autumn leaves, mountain climbing. Recommended clothing: light jacket, long-sleeved shirt.
  • Winter (December–February): Average -8.4–-34.2°F, cold and dry climate with significant snowfall. Common activities: skiing, snow activities. Recommended clothing: warm clothing, thick coat, waterproof snow boots.

Joetsu climatological average

Annual average temperature: approx. 45.0°F / Annual rainfall: approx. 1426 mm / Summer humidity: 70%–80% / Rainiest month: August

Joetsu monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
16.9°F
58.4
February
19.2°F
48.7
March
29.8°F
65.6
April
44.6°F
70.7
May
54°F
88.9
June
62.2°F
175.4
July
70.5°F
144.5
August
71.8°F
250.6
September
62.4°F
179.5
October
49.3°F
144.3
November
37.6°F
117.6
December
21.7°F
82.3

Joetsu weather for the next seven days

2/1
Sunday
Moderate or heavy snow showers
25.9°F/15.6°F
2/2
Monday
Patchy moderate snow
25.4°F/7°F
2/3
Tuesday
Moderate or heavy snow showers
27.4°F/4°F
2/4
Wednesday
Moderate or heavy snow showers
32.5°F/16°F
2/5
Thursday
Patchy moderate snow
29.2°F/13°F
2/6
Friday
Blizzard
23.7°F/5.1°F
2/7
Saturday
Moderate snow
12°F/1.3°F