I originally signed up for diving, but later couldn't overcome my fear of water and switched to snorkeling. The instructors were all very nice, always checking on the participants and introducing other fish species besides whale sharks. Observing whale sharks up close was breathtaking; they're like gentle, big children in the sea! The fish feeding activity was also very fun. There are showers on shore, but you need to bring your own toiletries if needed. The only downside was the lack of hair dryers; long hair had to air dry.
The service of Irisan was very good during the two-day chartered car tour. There were water and umbrellas in the car. The driver was very steady and gave a brief introduction to the places we passed. Although it was all in Japanese, I was able to grasp the key points and there was no problem in simple communication.
Anonymous User
Family
Okinawa Main Island Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Okinawa Main Island year round climate
Spring (March–May): Average 66–73°F, warm and comfortable climate, rainfall gradually increases. Common activities: Diving, snorkeling, beach activities. Recommended clothing: Light long-sleeved clothing, shorts, sun protection clothing.
Summer (June–August): Average 79–85°F, hot and humid, heavy rainfall, occasional typhoons. Common activities: Water activities, viewing tropical plants, night market visits. Recommended clothing: Light and breathable clothing, shorts, sandals, sunscreen.
Autumn (September–November): Average 78–72°F, comfortable and pleasant climate, reduced rainfall. Common activities: Diving, snorkeling, sightseeing. Recommended clothing: Thin long-sleeved clothing, long pants or skirts.
Winter (December–February): Average 62–64°F, mild and humid, occasional rainy days. Common activities: Onsen (hot spring) bathing, enjoying ocean views, tasting Okinawan cuisine. Recommended clothing: Warm jacket, long-sleeved clothing, long pants.
Okinawa Main Island climatological average
Annual average temperature: approx. 73.9°F / Annual rainfall: approx. 2742 mm / Summer humidity: 75%–85% / Rainiest month: June
Okinawa Main Island monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
62.4°F
84.6
February
64.4°F
106.2
March
66.7°F
231.8
April
72.3°F
189.5
May
73.8°F
332.6
June
79.3°F
534
July
85.1°F
194.6
August
84.4°F
348.8
September
82.4°F
218.2
October
78.4°F
152.7
November
72.9°F
203.1
December
64.6°F
146.1
Okinawa Main Island weather for the next seven days
12/17
Wednesday
Patchy rain nearby
71.3°F/66.6°F
12/18
Thursday
Patchy rain nearby
70.1°F/66.7°F
12/19
Friday
Partly Cloudy
71.9°F/67.1°F
12/20
Saturday
Moderate rain
71.8°F/68.9°F
12/21
Sunday
Patchy rain nearby
73.9°F/69.8°F
12/22
Monday
Patchy rain nearby
67.9°F/65.2°F
12/23
Tuesday
Patchy rain nearby
69.6°F/64.9°F
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