HaterumaAbout Hateruma
Hateruma is the southernmost inhabited island of Japan, part of the Yaeyama group in Okinawa Prefecture. The island is known for traditional Ryukyuan culture, coral-fringed beaches and clear night skies.
Small villages, low-rise traditional houses and stretches of white sand beaches are typical features, along with shallow coral reefs used for snorkeling. A stone marker on the island denotes Japan’s southernmost inhabited point and is a common photo spot.
The island was historically part of the Ryukyu Kingdom and later incorporated into modern Japan; local culture retains Ryukyuan language and customs. Fishing and small-scale agriculture have long supported the island community.
Hateruma lies in the southern Yaeyama Islands of Okinawa Prefecture in the East China Sea, administratively part of Taketomi town. The closest larger island and transport hub is Ishigaki.
- Southernmost inhabited point: Marked by a stone monument denoting the southernmost inhabited point of Japan and valued locally for very low light pollution, making it a popular site for stargazing.
Best Time to Visit Hateruma
Best visited in early winter for clear skies and mild temperatures; summer is for swimmers and snorkelers but watch typhoon season (Aug-Oct).
Weather & Climate near Hateruma
Hateruma's climate is classified as Tropical Rainforest - Tropical Rainforest climate with hot summers (peaking in July) and mild winters (coldest in January). Temperatures range from 17°C to 31°C. Heavy rainfall (2219 mm/year), wettest in September.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Acceptable | 17° - 21° | 19° | 161 mm | overcast | 77% | 4.2 m/s | 0.8 moderate | 10.7h |
| February | Acceptable | 17° - 21° | 19° | 145 mm | overcast | 79% | 3.9 m/s | 1.1 high | 11.2h |
| March | Good | 18° - 23° | 21° | 144 mm | overcast | 80% | 3.6 m/s | 1.3 high | 11.9h |
| April | Good | 21° - 26° | 23° | 160 mm | overcast | 83% | 3.6 m/s | 1.6 very high | 12.6h |
| May | Good | 23° - 28° | 25° | 206 mm | overcast | 85% | 4.1 m/s | 1.9 very high | 13.2h |
| June | Good | 25° - 30° | 32° | 173 mm | overcast | 86% | 3.7 m/s | 2.3 extreme | 13.5h |
| July | Good | 26° - 31° | 35° | 170 mm | partly cloudy | 83% | 4.3 m/s | 2.6 extreme | 13.4h |
| August | Good | 26° - 31° | 34° | 228 mm | partly cloudy | 83% | 4.0 m/s | 2.3 extreme | 12.9h |
| September | Very Good | 25° - 30° | 31° | 241 mm | partly cloudy | 81% | 4.1 m/s | 1.9 very high | 12.2h |
| October | Good | 23° - 28° | 26° | 230 mm | overcast | 78% | 4.5 m/s | 1.4 high | 11.5h |
| November | Good | 21° - 25° | 23° | 206 mm | overcast | 78% | 4.9 m/s | 1.0 moderate | 10.8h |
| December | Good | 18° - 22° | 20° | 155 mm | overcast | 77% | 4.4 m/s | 0.7 moderate | 10.5h |
How to Get to Hateruma
Ferries and small plane connections run from Ishigaki Island. From Ishigaki Port take the high-speed ferry (about 1-2 hours depending on service) or a local charter. Arrange return crossings in advance, especially in shoulder seasons.
Tips for Visiting Hateruma
- Take the morning ferry from Ishigaki for calm seas and clear snorkeling conditions.
- Walk or rent a bicycle - traffic is minimal and roads are short; avoid the single-lane bridge at high tide if cycling.
- Visit the southern observation point after sunset for one of Japan's clearest views of the Milky Way.