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Pratas Islands

Island

The Pratas (Dongsha) Islands are Taiwanese‑administered coral atolls in the South China Sea; access is restricted, but the area is noted for diving, reef ecology and a maritime nature reserve.

Pratas Islands TainanKaohsiungChiayi CityYu ShanLiuqiu IslandKenting National ParkAli Shan ShanmoPratas Islands

Pratas Islands essentials

Address: Pratas Islands (Dongsha Atoll), South China Sea - administered from Kaohsiung/Takao, Taiwan
Admission: Access regulated - visits to the Pratas/Dongsha Atoll require permits and usually organised dive or research trips (fees apply)
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About Pratas Islands

The Pratas Islands, also known as Dongsha, are an atoll and group of reefs in the northern South China Sea administered by Taiwan’s Kaohsiung City. The feature includes a single larger cay with supporting facilities and an enclosed lagoon ringed by coral reefs.

The atoll is protected for its marine biodiversity and reef systems and has been designated as a national park and marine reserve. The environment comprises shallow lagoon habitat, reef flats and deeper slopes that support coral assemblages and reef fishes.

The islands are administered by Taiwan and are visited only with authorisation; a small garrison and park staff maintain presence on the main cay. The atoll lies in the northern South China Sea, several hundred kilometres southwest of Taiwan’s main island.

  • Administration and access: Administered by Taiwan (Kaohsiung City) and designated a marine national park, access is restricted and typically requires permits from Taiwanese authorities.

What to See#

  • Pratas Island (main cay): The main coral cay and islet with an airstrip, lighthouse and limited inhabited facilities that serve park staff and garrison personnel.
  • Atoll lagoon and reef: The surrounding atoll and lagoon containing coral reef systems and deeper reef slopes that are the primary focus of marine conservation and diving activities.
Things to Do
When to Go

Best Time to Visit Pratas Islands

Autumn through spring generally offers better sea conditions; travel requires permits and careful planning.

Autumn-Winter
Oct-Dec · 24-28°C
Calmer seas and good visibility for diving; typhoon season generally over.
Spring
Mar-May · 22-28°C
Good diving conditions but check local weather for winds.

Weather & Climate near Pratas Islands

Climate

Tropical climate with hot summers (peaking in July) and warm winters (coldest in January). Temperatures range from 19°C to 31°C. Abundant rainfall (1817 mm/year), wettest in August with a pronounced dry season.

Air Quality: AQI 49 Good
Best Time to Visit
MarchFebruaryJanuary
Temperature & Rainfall
Temperature Range
31°
Warmest Month
15°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Excellent 19° - 23° 21° 17 mm overcast 82% 3.6 m/s 1.1 high 10.9h
February Excellent 19° - 23° 21° 21 mm overcast 84% 3.7 m/s 1.5 high 11.4h
March Excellent 21° - 25° 23° 23 mm partly cloudy 85% 3.3 m/s 1.7 very high 11.9h
April Excellent 23° - 28° 25° 61 mm partly cloudy 85% 3.3 m/s 2.1 extreme 12.5h
May Very Good 25° - 29° 31° 169 mm partly cloudy 86% 3.3 m/s 2.3 extreme 13.0h
June Good 26° - 30° 33° 329 mm partly cloudy 85% 3.2 m/s 2.4 extreme 13.2h
July Good 26° - 31° 34° 352 mm partly cloudy 83% 3.4 m/s 2.5 extreme 13.1h
August Good 26° - 30° 33° 437 mm overcast 84% 3.2 m/s 2.3 extreme 12.7h
September Good 26° - 30° 32° 241 mm overcast 82% 3.1 m/s 2.0 very high 12.1h
October Very Good 24° - 28° 26° 110 mm overcast 81% 3.5 m/s 1.6 very high 11.6h
November Very Good 22° - 25° 24° 32 mm overcast 82% 4.7 m/s 1.2 high 11.1h
December Excellent 20° - 23° 22° 25 mm overcast 81% 3.5 m/s 1.0 moderate 10.8h
Getting There & Around

How to Get to Pratas Islands

Pratas/Dongsha Atoll is reached only by permit and specialised vessels out of ports in southern Taiwan (e.g., Kaohsiung). Tourist access is rare and often subject to seasonal or political restrictions; consult Taiwan’s Coast Guard and environmental authorities for current procedures.

Tips for Visiting Pratas Islands

  • Travel to the Pratas/Dongsha Atoll typically needs official permits - arrange through Taiwan's Coast Guard or authorised tour operators.
  • Bring dive certification if planning underwater activities; the atoll is prized for coral and pelagic life.
  • Prepare for basic facilities and strict conservation rules on the atoll.