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Shiojiri

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Shiojiri Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Shiojiri year round climate

  • Spring (March–May): 5.3–15°C on average, rainy and humid, with temperatures rising slowly. Snow is possible in March, and it gradually warms up starting in April. Common activities: Picnics, flower viewing (certain species). Recommended clothing: Warm jacket, comfortable long pants, rain gear.
  • Summer (June–August): 19.4–25.5°C on average, hot and rainy, with July being the peak of the rainy season and higher humidity. Common activities: Summer resort visits, stream activities (safety precautions are necessary). Recommended clothing: Breathable and light clothing, rain gear, sun hat.
  • Autumn (September–November): 8.4–22.5°C on average, pleasant and comfortable, with rainfall gradually decreasing, but early morning and evening temperature differences should be noted. Common activities: Hiking, viewing autumn leaves (in some areas). Recommended clothing: Comfortable long-sleeved clothing, light jacket, comfortable shoes.
  • Winter (December–February): 0.1–2.7°C on average, cold and dry, with occasional snowfall. Common activities: Hot spring experiences, skiing (requires travel to nearby areas). Recommended clothing: Warm, thick jacket, hat, scarf, gloves.

Shiojiri climatological average

Annual average temperature: approx. 12.4°C / Annual rainfall: approx. 1689 mm / Summer humidity: 70%–80% / Rainiest month: July

Shiojiri monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
0.1°C
62.6
February
0.6°C
106.8
March
5.3°C
142
April
11.6°C
175.6
May
15°C
196.1
June
19.4°C
216
July
24°C
224.5
August
25.5°C
103
September
22.5°C
163.9
October
13.7°C
121
November
8.4°C
119.7
December
2.7°C
58.6

Shiojiri weather for the next seven days

12/16
Tuesday
Sunny
4.5°C/-6.2°C
12/17
Wednesday
Patchy rain nearby
6.1°C/-2.4°C
12/18
Thursday
Light freezing rain
4.3°C/-2.8°C
12/19
Friday
Sunny
9°C/-2.8°C
12/20
Saturday
Moderate rain
6.6°C/-1.3°C
12/21
Sunday
Patchy rain nearby
9°C/5.9°C
12/22
Monday
Patchy rain nearby
2.8°C/0.2°C

Shiojiri Frequently Asked Questions and Useful Information for Travel

Best time to go to Shiojiri?

The best time to visit Shiojiri is spring and autumn. The weather in these two seasons is mild and suitable for viewing the beautiful scenery of the Alps.

Must-visit attractions?

Must-visit attractions include Shiojiri wine history, Naarai-juku in the early summer (a nationally selected protected area of traditional architecture), and Shirokotsu Onsen in autumn leaves.