The Western-style buildings in the park are more beautiful than I imagined, and they also offer a panoramic view of Nagasaki Port.
Anonymous User
Family
Inasa Mountain Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Inasa Mountain year round climate
Spring (March–May): Average 55–67°F, mild climate but with relatively high rainfall, especially in March and April. Common activities: Flower viewing, outdoor excursions (be mindful of weather changes). Recommended clothing: Light jacket, long-sleeved shirt, rain gear essential.
Summer (June–August): Average 74–84°F, hot and humid, abundant rainfall, with the most rainfall in June. Common activities: Avoiding the heat, indoor activities, swimming at the beach (be mindful of sun protection). Recommended clothing: Light and breathable clothing, hat, sunscreen.
Autumn (September–November): Average 69–60°F, comfortable and pleasant climate, reduced rainfall. Common activities: Hiking, outdoor walks. Recommended clothing: Comfortable long-sleeved shirts, light jacket.
Winter (December–February): Average 48–47°F, lower temperatures, less rainfall. Common activities: Hot spring trips, indoor leisure activities. Recommended clothing: Warm clothing, thick jacket, scarf, gloves.
Inasa Mountain climatological average
Annual average temperature: approx. 64.9°F / Annual rainfall: approx. 2007 mm / Summer humidity: 70%–80% / Rainiest month: June
Inasa Mountain monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
45.7°F
93
February
47.8°F
86.3
March
55°F
212
April
62.6°F
194.7
May
67.8°F
207
June
74.5°F
324.7
July
82.6°F
282.3
August
84.6°F
243.7
September
80.8°F
165.3
October
69.4°F
69
November
60.8°F
85.7
December
48.2°F
43.3
Inasa Mountain weather for the next seven days
5/26
Tuesday
Moderate rain
73.4°F/68.8°F
5/27
Wednesday
Heavy rain
70.4°F/68.3°F
5/28
Thursday
Patchy rain nearby
74.1°F/68.6°F
5/29
Friday
Patchy rain nearby
75.4°F/66.3°F
5/30
Saturday
Sunny
76.9°F/64.4°F
5/31
Sunday
Sunny
78°F/66.2°F
6/1
Monday
Sunny
79.3°F/66.2°F
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