Spring (March–May): Average 50–66°F, mild and comfortable climate, but with relatively high rainfall, especially in April. Common activities: flower viewing, coastal walks, sightseeing. Recommended clothing: light jacket, long-sleeved shirt, raincoat essential.
Summer (June–August): Average 74–83°F, hot and humid, frequent rainfall, especially abundant in July and August. Common activities: swimming, water activities, enjoying the sea breeze. Recommended clothing: light and breathable clothing, sun-protective clothing, hat, raincoat.
Autumn (September–November): Average 65–79°F, comfortable and pleasant climate, rainfall gradually decreasing. Common activities: maple leaf viewing, coastal walks, outdoor activities. Recommended clothing: comfortable long-sleeved shirts, light jacket.
Winter (December–February): Average 39–43°F, cold and dry, less rainfall. Common activities: onsen bathing, indoor activities. Recommended clothing: warm coat, sweater, scarf, hat, gloves.
Shima climatological average
Annual average temperature: approx. 62.6°F / Annual rainfall: approx. 2321 mm / Summer humidity: 75%–85% / Rainiest month: August
Shima monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
39.6°F
34.3
February
42.1°F
87.4
March
50.2°F
139.7
April
61°F
174.2
May
66.7°F
233.6
June
74.5°F
331.3
July
82.4°F
338.6
August
83.8°F
388
September
79.9°F
270.9
October
65.8°F
137.6
November
56.3°F
147.9
December
43.2°F
37.5
Shima weather for the next seven days
12/18
Thursday
Sunny
54.2°F/38.4°F
12/19
Friday
Sunny
54.9°F/36.6°F
12/20
Saturday
Heavy rain
52.5°F/46.3°F
12/21
Sunday
Moderate rain
56.2°F/52.4°F
12/22
Monday
Patchy rain nearby
55.7°F/48.9°F
12/23
Tuesday
Patchy rain nearby
51.1°F/45.4°F
12/24
Wednesday
Sunny
55.2°F/41.4°F
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