Cross-sea ferry services are infrequent, so seize the opportunity to experience the fun of traveling by boat with your car! Remember not to go to the wrong company; you can ask the parking attendant first, and they will tell you which side is where your order is located.
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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
9/23
Wednesday
Sunny
77.4°F/67.6°F
9/24
Thursday
Sunny
79.2°F/68.5°F
9/25
Friday
Overcast
76.6°F/70.1°F
9/26
Saturday
Light rain shower
74.4°F/70.8°F
9/27
Sunday
Light rain shower
73.2°F/69.3°F
9/28
Monday
Overcast
75.7°F/70°F
9/29
Tuesday
Light rain shower
77.5°F/72.4°F
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