Miyakojima, known for its stunning ocean and diverse marine activities, attracts many visitors throughout the year. The island’s crystal-clear blue waters—often referred to as “Miyako Blue”—are a major draw. Below is a detailed guide to the beauty of Miyakojima’s ocean and how you can swim safely all year round.

The Beauty of Miyakojima’s Ocean
Miyako Blue
Miyakojima’s sea is famous for its exceptional clarity and vibrant blue color. The white sandy beaches further enhance the breathtaking views, creating a scene that looks like a painting. Snorkeling and diving offer the opportunity to observe coral reefs and colorful tropical fish up close.

Popular Beaches
- Yonaha Maehama Beach: A 7-km-long white sand beach with crystal-clear water. Parasailing and other water activities are available.
- Aragusuku Beach (Shinjo Kaigan): A great snorkeling spot with coral reefs and high water visibility, perfect for viewing marine life.
- Sunayama Beach: Known for its unique rock formations and beautiful sand, it’s also ideal for photography.

Year-Round Swimming Guide
Seasonal Water Temperatures and Climate
- Summer (June to September): Air temperatures exceed 30°C; water temperatures range from 28°C to 30°C. The best time for swimming.
- Autumn (October to November): Air temperature slightly cools, but water remains warm at 25°C to 28°C—still comfortable for swimming.
- Winter (December to February): Air temperature around 20°C; water temperature ranges from 20°C to 23°C. Swimming is possible with a wetsuit.
- Spring (March to May): Air and water temperatures rise again to around 23°C–25°C, marking the start of another great swimming season.

Typhoon Season
- When: Mainly from June to October
- Note: Ocean activities can be dangerous during typhoons. Always check weather updates and take appropriate safety measures.
Ocean Safety Tips
- Jellyfish: Be especially cautious from summer through fall. Choose beaches with jellyfish nets for safety.
- Rip Currents: If caught in one, don’t fight the current. Swim parallel to the shore to escape.
- Lifeguards: Some beaches may not have lifeguards during winter months. Check in advance.
Recommended Gear
- Wetsuits: Recommended in colder seasons to help retain body heat.
- Rash Guards: Ideal in summer to prevent sunburn and jellyfish stings.
Important Reminders
- Check the Weather: Always confirm the forecast and ocean conditions before entering the water.
- Beach Rules: Follow each beach’s specific rules and contribute to preserving the environment.
Summary
Miyakojima’s ocean, with its breathtaking clarity and beauty, allows for year-round swimming. However, it’s important to adapt to seasonal and weather conditions. Enjoy the stunning “Miyako Blue” sea while practicing safe and responsible marine activity habits.
