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 12.3–22.9°C, 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 26.1–31.1°C, 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 21.1–28.0°C, 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 7.3–9.7°C, 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. 19°C / Annual rainfall: approx. 1745 mm / Summer humidity: 70%–80% / Rainiest month: June
Minamiaizu weather by month
Month
Air temperature (°C)
Precipitation (mm)
January
7.3°C
29.4
February
9°C
73.3
March
12.3°C
150.3
April
18.8°C
166.9
May
22.9°C
189.2
June
26.1°C
263.2
July
30.3°C
134.9
August
31.1°C
225.3
September
28°C
242.4
October
21.1°C
142.8
November
14.4°C
93.1
December
9.7°C
34.8
7-day weather forecast for Minamiaizu
10/18
Sunday
Sunny
23.2°C/18.5°C
10/19
Monday
Overcast
26.3°C/19.4°C
10/20
Tuesday
Overcast
27.7°C/22.2°C
10/21
Wednesday
Sunny
28.5°C/22.8°C
10/22
Thursday
Overcast
24.6°C/17.5°C
10/23
Friday
Overcast
20.3°C/15.2°C
10/24
Saturday
Sunny
21.8°C/15.9°C
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