COLLECTIE TROPENMUSEUM Mannen bij aankomst op het strand van Moearabinoeangeun na een verblijf op Trouwers-eiland (Poelau Tindjil) met een op zee gevangen tengiri TMnr 60044111.jpg

Dhr. C.H. (Christoffel Hendrik) Japing (Fotograaf/photographer). CC BY-SA 3.0 Wikimedia Commons

Tinjil

Island

Tinjil Island off Java's Banten coast is visited for beaches, snorkeling and occasional day trips from the mainland; services and access are limited and seasonal.

Tinjil JakartaTangkuban PrahuSemarangKarimunjawaYogyakartaBorobudurPrambananSoloSurabayaMalangIjenBanyuwangiTinjil
In this guide

Tinjil essentials

Country: Indonesia
Driest months: Jun-Aug
Pay in: Rupiah (Rp)
Language: Indonesian
Emergency: 110

Tinjil at a Glance

About Tinjil

Pulau Tinjil is a small, uninhabited island off the coast of Banten province in western Java. It is known for hosting populations of long-tailed macaques (Macaca fascicularis) and is used as a quarantine and breeding site for animals used in biomedical research and conservation purposes. The island has no permanent civilian settlement and entry is controlled by Indonesian authorities; facilities on the island are focused on animal housing and veterinary support.

  • Restricted access: Access is restricted and regulated because the island is used for primate quarantine and breeding work; permission from Indonesian authorities is required to visit.
When to Go

Best Time to Visit Tinjil

Dry season (May-September) provides the most reliable access by boat and calmer sea conditions.

Dry season
May-September · 24-31 °C
Calmer seas and better conditions for boat crossings from the mainland.
Transition months
March-April, October-November · 25-32 °C
Intermittent rain and warm temperatures; still accessible with caution.
Wet season
December-February · 24-30 °C
Heavy rains and rougher seas-boat crossings often curtailed.

Weather & Climate near Tinjil

Climate

Tropical climate with consistently warm temperatures year-round. Temperatures range from 22°C to 29°C. Heavy rainfall (3182 mm/year), wettest in November.

Air Quality: AQI 48 Good
Best Time to Visit
AugustJulySeptember
Temperature & Rainfall
Temperature Range
31°
Warmest Month
22°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Good 23° - 28° 25° 399 mm overcast 83% 2.9 m/s 2.3 extreme 12.3h
February Good 23° - 28° 25° 334 mm overcast 83% 2.2 m/s 2.4 extreme 12.2h
March Good 23° - 28° 26° 352 mm overcast 83% 2.3 m/s 2.4 extreme 12.0h
April Good 23° - 29° 26° 275 mm overcast 83% 2.8 m/s 2.2 extreme 11.9h
May Good 23° - 29° 26° 218 mm partly cloudy 82% 2.7 m/s 1.9 very high 11.7h
June Very Good 23° - 29° 26° 135 mm partly cloudy 82% 2.0 m/s 1.8 very high 11.6h
July Very Good 22° - 29° 25° 121 mm partly cloudy 82% 2.5 m/s 1.9 very high 11.7h
August Excellent 22° - 29° 25° 110 mm some cloud 81% 3.5 m/s 2.2 extreme 11.8h
September Very Good 22° - 29° 25° 155 mm partly cloudy 82% 3.2 m/s 2.3 extreme 12.0h
October Good 23° - 29° 26° 256 mm overcast 83% 3.5 m/s 2.2 extreme 12.1h
November Good 23° - 28° 25° 417 mm overcast 83% 3.0 m/s 2.2 extreme 12.3h
December Good 23° - 27° 25° 410 mm overcast 83% 2.6 m/s 2.1 extreme 12.4h
Getting There & Around

How to Get to Tinjil

Tinjil Island is located off the south coast of Banten province and is accessed by authorised boats from nearby ports in West Java or Banten. Visits are controlled due to the island’s wildlife quarantine and research role; permissions are required for landings.

Tips for Visiting Tinjil

  • Tinjil Island is a regulated site-if interested in the primate facilities, contact Indonesian research or conservation authorities for guided visits.
  • Boat crossings can be choppy; choose a reputable operator with life jackets and experienced skippers.
  • Respect quarantine rules-do not bring food or materials that might affect local wildlife.