Spring (March–May): Average 52–65°F, warm and comfortable climate with relatively high rainfall, especially in April. Common activities: Spring outings, flower viewing. Recommended clothing: Light jacket, long-sleeved shirt.
Summer (June–August): Average 71–82°F, hot and humid, rainfall concentrated in June. Common activities: Swimming at the beach, resort travel. Recommended clothing: Light and breathable clothing, short sleeves, shorts.
Autumn (September–November): Average 66–57°F, comfortable and pleasant climate with reduced rainfall. Common activities: Maple leaf viewing, outdoor excursions. Recommended clothing: Light jacket, long-sleeved shirt.
Winter (December–February): Average 45–46°F, cold climate with less rainfall. Common activities: Hot spring bathing, indoor activities. Recommended clothing: Warm jacket, sweater, scarf.
Kokubun climatological average
Annual average temperature: approx. 62.6°F / Annual rainfall: approx. 2470 mm / Summer humidity: 70%–80% / Rainiest month: June
Kokubun monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
43.5°F
67.2
February
46.6°F
127.8
March
52.9°F
220.7
April
61°F
278.8
May
65.8°F
262.6
June
72°F
570.6
July
79.5°F
280.7
August
82.2°F
216.9
September
77.4°F
154.1
October
66.4°F
111
November
57.9°F
104.6
December
45.1°F
75.8
Kokubun weather for the next seven days
6/3
Wednesday
Patchy rain nearby
80.4°F/67.1°F
6/4
Thursday
Heavy rain
68.1°F/65°F
6/5
Friday
Patchy rain nearby
77°F/65.5°F
6/6
Saturday
Moderate rain
73.6°F/66.2°F
6/7
Sunday
Heavy rain
68°F/64.4°F
6/8
Monday
Patchy rain nearby
78.8°F/64.3°F
6/9
Tuesday
Partly Cloudy
74.3°F/59.4°F
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