The entire trip was relaxed, with the Japanese-speaking guide providing clear and concise explanations of the attractions and repeatedly confirming whether everyone knew the meeting point and time, ensuring a smooth and successful trip.
My private jet skills were unfortunately disrupted by traffic, causing delays. Next time I'll have to leave earlier.
Anonymous User
Family
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
9/24
Thursday
Fog
20.1°C/13.7°C
9/25
Friday
Overcast
19.2°C/10.6°C
9/26
Saturday
Light rain shower
17.8°C/10.7°C
9/27
Sunday
Fog
19.4°C/12.6°C
9/28
Monday
Fog
19.1°C/14.4°C
9/29
Tuesday
Overcast
17.9°C/13°C
9/30
Wednesday
Light rain shower
15.8°C/9.2°C
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