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Gero Onsen

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Gero Onsen Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Gero Onsen year round climate

  • 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

12/20
Saturday
Partly Cloudy
8.4°C/-2°C
12/21
Sunday
Moderate rain
10°C/-0.4°C
12/22
Monday
Patchy moderate snow
-2.2°C/-7.6°C
12/23
Tuesday
Sunny
4.1°C/-7°C
12/24
Wednesday
Moderate or heavy snow showers
1.4°C/-3.6°C
12/25
Thursday
Light freezing rain
-1.2°C/-6.5°C
12/26
Friday
Sunny
5.2°C/-7.9°C