Spring (March–May): 5–15°C on average, mild climate but with relatively high rainfall, especially in April. Common activities: flower viewing, hot spring bathing, hiking. Recommended attire: light jacket, comfortable long pants, rain gear.
Summer (June–August): 20–25°C on average, hot and humid, with relatively high rainfall, peaking in July. Common activities: playing in streams, hot spring bathing, sightseeing in cool mountain resorts. Recommended attire: light and breathable clothing, rain gear, sun hat.
Autumn (September–November): 8–23°C on average, pleasant climate, but with a large temperature difference between morning and evening, moderate rainfall. Common activities: autumn leaves viewing, hot spring bathing, hiking. Recommended attire: light jacket, long-sleeved shirt, comfortable long pants.
Winter (December–February): -1–8°C on average, cold and dry, occasional snowfall. Common activities: skiing, hot spring bathing, snow scenery viewing. Recommended attire: warm clothing, thick jacket, scarf, gloves, hat.
Gero Onsen climatological average
Annual average temperature: approx. 12°C / Annual rainfall: approx. 1883 mm / Summer humidity: 70%–80% / Rainiest month: July
Gero Onsen monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-1.1°C
85.6
February
0.4°C
85.1
March
5°C
159.9
April
12.1°C
174.3
May
15.2°C
216.8
June
20.1°C
213.6
July
24.7°C
222.8
August
25.1°C
145.9
September
22.8°C
218.2
October
13.9°C
160.6
November
8.3°C
123.2
December
1.8°C
77.8
Gero Onsen weather for the next seven days
11/4
Tuesday
Sunny
5.7°C/-5.2°C
11/5
Wednesday
Sunny
10.1°C/-2.5°C
11/6
Thursday
Sunny
13°C/0.2°C
11/7
Friday
Partly Cloudy
9.4°C/-1.3°C
11/8
Saturday
Sunny
13.8°C/-2.7°C
11/9
Sunday
Patchy rain nearby
10.4°C/5°C
11/10
Monday
Patchy rain nearby
10.2°C/-0.3°C
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