The long-awaited Ginzan Onsen finally appeared before my eyes, and the dreamlike scenery was exactly as I had imagined. The itinerary also included Ouchi-juku, Fox Village, and Zao Snow Tree. So satisfying! Many thanks to the driver for his superb driving skills and the guide for the excellent arrangements!
Anonymous User
Couple
Best time to visit Minamiaizu
Data source:Meteostat Update date:2025-09
Weather in Minamiaizu throughout the year
Spring (March–May): Average 54–73°F, mild climate. Temperatures gradually warm starting in March; April offers pleasant temperatures, while May is warm. Rainfall gradually increases. Common activities: Sightseeing, flower viewing. Suggested clothing: Light jacket, long-sleeved shirt; warm clothing for mornings and evenings.
Summer (June–August): Average 78–87°F, hot temperatures. June to August experience higher rainfall and humidity. Common activities: Summer resort activities, stream play, hiking (be sure to protect yourself from the sun and stay hydrated). Suggested clothing: Light and breathable clothing, sun hat, sunglasses.
Autumn (September–November): Average 69–82°F, pleasant climate. September remains warm, with temperatures gradually cooling down after October. Rainfall decreases compared to summer. Common activities: Maple leaf viewing, hiking. Suggested clothing: Light jacket, long-sleeved shirt.
Winter (December–February): Average 45–49°F, cold temperatures, low rainfall. Common activities: Skiing (if there are nearby resorts), onsen experience. Suggested clothing: Warm coat, hat, gloves, scarf.
Weather in Minamiaizu
Annual average temperature: approx. 66.2°F / Annual rainfall: approx. 1745 mm / Summer humidity: 70%–80% / Rainiest month: June
Minamiaizu weather by month
Month
Air temperature (°F)
Precipitation (mm)
January
45.1°F
29.4
February
48.2°F
73.3
March
54.1°F
150.3
April
65.8°F
166.9
May
73.2°F
189.2
June
79°F
263.2
July
86.5°F
134.9
August
88°F
225.3
September
82.4°F
242.4
October
70°F
142.8
November
57.9°F
93.1
December
49.5°F
34.8
7-day weather forecast for Minamiaizu
10/16
Friday
Overcast
78.4°F/67.7°F
10/17
Saturday
Sunny
77°F/67.4°F
10/18
Sunday
Sunny
73.4°F/65.1°F
10/19
Monday
Overcast
79.2°F/66.7°F
10/20
Tuesday
Partly Cloudy
82.6°F/71.3°F
10/21
Wednesday
Sunny
82.3°F/73.7°F
10/22
Thursday
Overcast
76.2°F/66.2°F
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