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 21.6–25.7°C, 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 28.7–30.3°C, 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 24.4–28.8°C, 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 19.3–20.4°C, 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. 25.1°C / Annual rainfall: approx. 2232 mm / Summer humidity: 75%–85% / Rainiest month: September
Kohamashima Island monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
19.3°C
96.7
February
20°C
123.3
March
21.6°C
98.3
April
24.6°C
113
May
25.7°C
333.7
June
28.7°C
195.7
July
30.3°C
148.3
August
30.1°C
177.3
September
28.8°C
354
October
27°C
231.7
November
24.4°C
203.3
December
20.4°C
157
Kohamashima Island weather for the next seven days
12/18
Thursday
Patchy rain nearby
22.1°C/21.7°C
12/19
Friday
Moderate rain
22.7°C/20.8°C
12/20
Saturday
Moderate rain
21.8°C/20.8°C
12/21
Sunday
Patchy rain nearby
23°C/21.9°C
12/22
Monday
Patchy rain nearby
21.6°C/19.7°C
12/23
Tuesday
Patchy rain nearby
22°C/19.3°C
12/24
Wednesday
Patchy rain nearby
21.6°C/21.2°C
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