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Unzen

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Unzen Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Unzen year round climate

  • Spring (March–May): Average 54–68°F, mild climate but with relatively high rainfall. Cherry blossoms start blooming in March, but it also rains frequently; please check weather forecasts. Common activities: Cherry blossom viewing, onsen (hot spring) bathing, hiking (be mindful of weather changes). Recommended clothing: Light jacket, comfortable and breathable long-sleeved clothing, and rain gear.
  • Summer (June–August): Average 75–85°F, hot and humid with abundant rainfall, especially in June. Common activities: Summer resort, relaxation at onsen (hot spring) inns, viewing cloud seas (be mindful of weather conditions). Recommended clothing: Light and breathable short-sleeved clothing, rain gear, and sunscreen.
  • Autumn (September–November): Average 69–81°F, pleasant and comfortable climate with gradually decreasing rainfall. Common activities: Hiking, viewing autumn leaves (in some areas), onsen (hot spring) bathing. Recommended clothing: Comfortable long-sleeved clothing, light jacket.
  • Winter (December–February): Average 46–48°F, cold climate with less rainfall. Common activities: Onsen (hot spring) bathing, viewing winter scenery. Recommended clothing: Warm jacket, sweater, scarf, gloves, etc.

Unzen climatological average

Annual average temperature: approx. 65.3°F / Annual rainfall: approx. 2349 mm / Summer humidity: 70%–80% / Rainiest month: June

Unzen monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
46°F
79.8
February
47.8°F
130.8
March
54.9°F
185.9
April
62.8°F
227
May
68.7°F
265.7
June
75.2°F
380.4
July
83.5°F
329.5
August
85.3°F
237.2
September
81.1°F
232.1
October
69.6°F
90.6
November
60.8°F
118
December
48.4°F
72.1

Unzen weather for the next seven days

8/8
Saturday
Sunny
87.5°F/79.1°F
8/9
Sunday
Sunny
89°F/76.4°F
8/10
Monday
Cloudy
82.8°F/77.1°F
8/11
Tuesday
Sunny
85.8°F/76.6°F
8/12
Wednesday
Sunny
85.9°F/73.8°F
8/13
Thursday
Sunny
85.9°F/76.8°F
8/14
Friday
Patchy rain nearby
84.5°F/75.4°F