The day before, the instructor will contact you to see if it is feasible based on the sea conditions. If it is not feasible, they will provide alternative solutions or cancel the trip. This time, we will change to snorkeling in Osaki and then snorkeling in Ishigaki Island in January. It will not be too cold, but you must keep warm when you come ashore!
Very helpful and accommodating service provider. Last minute booking of 2 x 10 seaters. Was able to provide local advice to Okinawa and go above and beyond to help make inquiries to restaurants for reservations. Highly recommended!
Anonymous User
Family
Ishigaki Island Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Ishigaki Island year round climate
Spring (March–May): 21.6–25.7°C on average, warm and comfortable climate with increasing rainfall. Common activities: snorkeling, diving, viewing tropical plants. Recommended clothing: light long-sleeved clothing, light jacket.
Summer (June–August): 28.7–30.3°C on average, hot and humid, occasional showers. Common activities: beach activities, water sports, night stargazing. Recommended clothing: light and breathable short-sleeved clothing, swimwear, sunscreen.
Autumn (September–November): 24.4–28.8°C on average, comfortable and pleasant climate, with heavier rainfall in September. Common activities: snorkeling, diving, exploring the island's natural scenery. Recommended clothing: light long-sleeved or short-sleeved clothing.
Winter (December–February): 19.3–20.4°C on average, warm and comfortable, with less rainfall. Common activities: enjoying the warm sunshine, seaside walks, viewing the winter night sky. Recommended clothing: light jacket, long-sleeved clothing.
Ishigaki Island climatological average
Annual average temperature: approx. 25.1°C / Annual rainfall: approx. 2232 mm / Summer humidity: 75%–85% / Rainiest month: September
Ishigaki 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
Ishigaki Island weather for the next seven days
2/4
Wednesday
Partly Cloudy
20.2°C/18.1°C
2/5
Thursday
Patchy rain nearby
21.2°C/20.3°C
2/6
Friday
Patchy rain nearby
22.2°C/21.2°C
2/7
Saturday
Patchy rain nearby
19.6°C/17.1°C
2/8
Sunday
Patchy rain nearby
15.9°C/13.3°C
2/9
Monday
Patchy rain nearby
16.1°C/12.7°C
2/10
Tuesday
Patchy rain nearby
19.3°C/16.6°C
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