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Aru Islands

Islands

The Aru Islands in eastern Indonesia are low, forested islands set in coral seas; travelers seek birdwatching, village visits and diving on reefs that remain largely unfettered by mass tourism.

Aru Islands TernateTidoreHalmaheraAmbonSeramBanda IslandsKei IslandsAru Islands
In this guide

Aru Islands essentials

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

Aru Islands at a Glance

About Aru Islands

The Aru Islands are an archipelago in Indonesia’s Maluku province located in the Arafura Sea. They comprise a large number of low-lying islands and are recognized for their mangrove systems, coastal wetlands, and traditional island communities.

The islands present a rural maritime landscape with small coastal settlements, traditional fisheries, and natural habitats that support diverse birdlife and marine resources. Access is typically by regional boat or limited air services, and infrastructure is modest compared with larger Indonesian islands.

The Aru Islands have long been inhabited by Austronesian and Papuan peoples and entered wider maritime trade networks in the premodern era. Colonial and modern periods brought changes in administration and economic activity but many communities retain traditional subsistence and craft practices.

Located in the Arafura Sea, the Aru group lies off the southwest coast of New Guinea and is administered as part of Maluku province in eastern Indonesia.

  • Environment and geology: The Aru Islands are a scattered group of low-lying islands in eastern Indonesia, composed largely of coral and uplifted limestone with extensive mangroves and wetlands.
Things to Do
When to Go

Best Time to Visit Aru Islands

Visit the Aru Islands in the dry season (roughly May-October) for calmer seas, better diving/snorkeling conditions and more reliable inter-island travel.

Dry season (best for travel/diving)
May-Oct · ~24-30°C
Lower rainfall, calmer seas and better visibility for diving, snorkeling and inter-island travel-this is the preferred period for visitors.
Wet season (rainier, rougher seas)
Nov-Apr · ~24-31°C
Higher rainfall, more frequent storms and rougher seas can disrupt travel between islands and reduce visibility for underwater activities.

Weather & Climate near Aru Islands

Climate

Aru Islands's climate is classified as Tropical Rainforest - Tropical Rainforest climate with consistently warm temperatures year-round. Temperatures range from 23°C to 31°C. Heavy rainfall (2526 mm/year), wettest in January.

Air Quality: AQI 32 Good
Best Time to Visit
OctoberSeptemberAugust
Temperature & Rainfall
Temperature Range
35°
Warmest Month
21°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Acceptable 24° - 31° 31° 316 mm overcast 84% 2.5 m/s 2.2 extreme 12.3h
February Acceptable 24° - 31° 31° 277 mm overcast 85% 2.4 m/s 2.3 extreme 12.2h
March Acceptable 24° - 31° 31° 275 mm overcast 84% 2.1 m/s 2.2 extreme 12.0h
April Good 24° - 31° 31° 268 mm overcast 84% 1.7 m/s 2.0 extreme 11.9h
May Good 24° - 30° 31° 253 mm overcast 85% 2.0 m/s 1.8 very high 11.7h
June Good 24° - 29° 26° 216 mm overcast 86% 2.1 m/s 1.5 very high 11.6h
July Good 23° - 28° 26° 164 mm overcast 85% 2.5 m/s 1.6 very high 11.7h
August Good 23° - 28° 26° 140 mm overcast 83% 2.5 m/s 1.9 very high 11.8h
September Very Good 23° - 29° 26° 97 mm overcast 81% 2.2 m/s 2.2 extreme 12.0h
October Very Good 24° - 31° 30° 105 mm partly cloudy 78% 2.0 m/s 2.3 extreme 12.1h
November Acceptable 24° - 31° 31° 150 mm overcast 77% 1.6 m/s 2.3 extreme 12.3h
December Acceptable 24° - 31° 31° 265 mm overcast 80% 1.9 m/s 2.2 extreme 12.4h
Getting There & Around

How to Get to Aru Islands

The Aru Islands (Maluku province) are served from eastern Indonesia by air and sea. The main town is Dobo on the largest island; Dobo Airport (DOB) has scheduled flights from Ambon (AMQ). Alternatively, regular and charter boats operate between Ambon (and other Maluku ports) and Dobo.

Inter-island travel within the Aru group is by local motorboat; arrange onward connections locally in Dobo, which is the usual gateway for visitors and supplies.

Tips for Visiting Aru Islands

  • Arrange travel through Ambon to Dobo and confirm onward boat or small-plane schedules in advance-commercial connections are infrequent and changeable.
  • Book accommodation and dive trips well ahead of time; infrastructure is limited and reliable options fill up during peak diving season.
  • If you plan to dive or snorkel, coordinate with local operators who know the best reef sites and seasonal conditions-independent exploration in remote areas can be unsafe.