The grass turned into fog, and the Aso Boys event was temporarily suspended, which was a bit disappointing. However, the friendliness of the local merchants and the delicious souvenirs made up for the aforementioned shortcomings.
I was the only Japanese person out of 26 people, but I had a very enjoyable trip without any problems. The guide was very cheerful and kind, and provided perfect support for everyone. The meals were varied, plentiful, and delicious. I was very satisfied with the price for such a comfortable bus trip.
Anonymous User
Solo traveler
Aso Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Aso year round climate
Spring (March–May): Average 5–13°C, mild climate, but with a large temperature difference between day and night, and less rainfall. Common activities: flower viewing, hiking. Recommended clothing: warm jacket, long-sleeved clothing.
Summer (June–August): Average 17–23°C, comfortable and pleasant climate, relatively little rainfall, but more rainfall in June. Common activities: mountain climbing, camping, outdoor activities. Recommended clothing: light and breathable clothing, sun protection clothing.
Autumn (September–November): Average 9–16°C, cool and comfortable climate, very little rainfall. Common activities: viewing autumn leaves, hot springs. Recommended clothing: light jacket, long-sleeved clothing.
Winter (December–February): Average 1–4°C, cold climate, very little rainfall. Common activities: skiing, hot spring experience. Recommended clothing: thick warm clothing, waterproof jacket.
Aso climatological average
Annual average temperature: approx. 12°C / Annual rainfall: approx. 104 mm / Summer humidity: 60%–70% / Rainiest month: June
Aso monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
1.5°C
1.4
February
4.1°C
7.9
March
5°C
13.5
April
12.1°C
10
May
13.5°C
10
June
17.2°C
22.5
July
22°C
10.7
August
23.2°C
13.2
September
21.1°C
3.4
October
15.7°C
5.3
November
9.1°C
5.6
December
1.3°C
0.6
Aso weather for the next seven days
7/31
Friday
Sunny
29.2°C/19.1°C
8/1
Saturday
Sunny
30.9°C/22.3°C
8/2
Sunday
Sunny
31.5°C/23.8°C
8/3
Monday
Patchy rain nearby
30°C/24.1°C
8/4
Tuesday
Fog
27.7°C/20.2°C
8/5
Wednesday
Sunny
28.1°C/19.5°C
8/6
Thursday
Patchy rain nearby
26.6°C/20.6°C
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