Kohamashima Island Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Kohamashima Island year round climate
Spring (March–May): Average 70–78°F, warm and comfortable climate, increasing rainfall, with May being the wettest month. Common activities: snorkeling, diving, beach walks. Recommended clothing: light and breathable clothing, a light jacket for backup.
Summer (June–August): Average 83–86°F, hot and humid, moderate rainfall. Common activities: swimming, water sports, stargazing. Recommended clothing: light short-sleeved shirts, shorts, swimwear, sunscreen is essential.
Autumn (September–November): Average 75–83°F, pleasant climate, September is the wettest month, rainfall decreases after October. Common activities: diving, snorkeling, hiking. Recommended clothing: light and breathable clothing, a light jacket is needed for mornings and evenings.
Winter (December–February): Average 66–68°F, warm and comfortable, less rainfall. Common activities: diving, snorkeling, beach walks. Recommended clothing: light clothing, a light jacket is needed for mornings and evenings.
Kohamashima Island climatological average
Annual average temperature: approx. 77.2°F / Annual rainfall: approx. 2232 mm / Summer humidity: 75%–85% / Rainiest month: September
Kohamashima Island monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
66.7°F
96.7
February
68°F
123.3
March
70.9°F
98.3
April
76.3°F
113
May
78.3°F
333.7
June
83.7°F
195.7
July
86.5°F
148.3
August
86.2°F
177.3
September
83.8°F
354
October
80.6°F
231.7
November
75.9°F
203.3
December
68.7°F
157
Kohamashima Island weather for the next seven days
12/18
Thursday
Patchy rain nearby
72.1°F/71.3°F
12/19
Friday
Patchy rain nearby
74.7°F/71.9°F
12/20
Saturday
Moderate rain
75°F/70.4°F
12/21
Sunday
Patchy rain nearby
74.2°F/72°F
12/22
Monday
Patchy rain nearby
71.6°F/70.7°F
12/23
Tuesday
Patchy rain nearby
73.5°F/72.1°F
12/24
Wednesday
Patchy rain nearby
72.8°F/68.4°F
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