Alor Archipelago

Islands Island chain in eastern Indonesia with diverse reefs

Remote East Nusa Tenggara island group prized by divers for steep coral walls, pelagic life and clear bays; visitors travel by boat for liveaboard dives and village stays.

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The Alor Archipelago is a group of islands in Indonesia’s East Nusa Tenggara province, centred on the large islands of Alor and Pantar. The chain lies in the eastern Lesser Sunda region and is administratively part of Alor Regency.

The islands are best known for their marine environment and diving, with coral reefs, walls and rich reef fauna that attract liveaboard and dive operators. Small towns and fishing villages provide basic visitor services and act as gateways for diving and land-based exploration.

Historically the islands have long been inhabited by Austronesian and Papuan-speaking communities and entered European colonial systems as part of the Dutch East Indies; they became part of the Republic of Indonesia after independence. The islands retain strong local traditions and subsistence economies.

Geographically the archipelago sits northeast of Timor and east of Flores in the Banda Sea sector of eastern Indonesia; the main transport link is by ferry or small aircraft to the principal town of Kalabahi on Alor Island.

  • Diving and marine life: The archipelago is noted for very high marine biodiversity and strong dive tourism, with coral reefs, steep drop-offs and abundant reef life.
  • Cultural diversity: The islands contain a mixture of Austronesian and Papuan languages and cultures, making them of interest for ethnographic study as well as nature tourism.

What to See #

  • Alor Island: The largest island and administrative centre, containing the main port and town of Kalabahi, which is the usual arrival point for visitors.
  • Pantar: The second-largest island in the group, separated from Alor by narrow straits and hosting several smaller settlements and farming communities.
Alor Archipelago
-8.2500, 124.2500

How to Get to Alor Archipelago #

Most visitors reach Alor via flights to Kalabahi (EFL) from Kupang (El Tari Airport) or by irregular ferry services from nearby islands. From Kalabahi, charter boats or scheduled local ferries connect to surrounding islands; sea conditions can delay services, so factor in buffer days.

Tips for Visiting Alor Archipelago #

  • Fly to Kalabahi (Alor's main airport) from Kupang and then arrange local boat transfers - schedules are irregular.
  • Bring cash (Indonesian rupiah) in small denominations; ATMs are rare outside Kalabahi.
  • Pack reef-safe sunscreen and a basic dive/snorkel light if planning night-snorkels - jellyfish and nocturnal life are best viewed with a small torch.

Best Time to Visit Alor Archipelago #

The archipelago is best visited in the dry season (May-October) when seas are calmer and diving conditions are optimal.

Dry season
May-October · 24-30°C / 75-86°F
Calm seas, better visibility for diving and boat travel.
Wet season
November-April · 25-31°C / 77-88°F
Higher rain chances, rougher seas and more limited boat services.

Weather & Climate near Alor Archipelago #

Climate

Alor Archipelago's climate is classified as Tropical Savanna - Tropical Savanna climate with consistently warm temperatures year-round. Temperatures range from 20°C to 30°C. Abundant rainfall (1265 mm/year), wettest in January with a pronounced dry season.

Best Time to Visit
AugustSeptemberJuly
Temperature & Rainfall
Temperature Range
35°
Warmest Month
23°
Coldest Month
Monthly Conditions

January

January is warm with stifling humidity (dew point 24°C). The wettest month with heavy rain (251 mm) and mostly overcast skies.

65 Good

Comfort

26°
Feels Like Warm
26°C
Temperature
23° 29°
82%
Humidity
Very Humid

Weather

251 mm
Rainfall
1.8 m/s
Wind
Calm
2.6
UV Index
Extreme
12.4h daylight

February

February is warm with stifling humidity (dew point 24°C). Heavy rain (228 mm) and mostly overcast skies.

65 Good

Comfort

26°
Feels Like Warm
26°C
Temperature
23° 29°
83%
Humidity
Very Humid

Weather

228 mm
Rainfall
2.4 m/s
Wind
Calm
2.7
UV Index
Extreme
12.3h daylight

March

March is warm with muggy conditions (dew point 24°C). Significant rainfall (200 mm) and partly cloudy skies.

69 Good

Comfort

26°
Feels Like Warm
26°C
Temperature
22° 29°
81%
Humidity
Very Humid

Weather

200 mm
Rainfall
1.7 m/s
Wind
Calm
2.7
UV Index
Extreme
12.0h daylight

April

April is warm with muggy conditions (dew point 23°C). Significant rainfall (110 mm).

81 Excellent

Comfort

26°
Feels Like Warm
26°C
Temperature
22° 30°
76%
Humidity
Very Humid

Weather

110 mm
Rainfall
1.5 m/s
Wind
Calm
2.5
UV Index
Extreme
11.8h daylight

May

May is warm with muggy conditions (dew point 23°C). Moderate rainfall (62 mm) and mostly sunny skies.

87 Excellent

Comfort

26°
Feels Like Warm
26°C
Temperature
22° 30°
73%
Humidity
Very Humid

Weather

62 mm
Rainfall
2.0 m/s
Wind
Calm
2.1
UV Index
Extreme
11.6h daylight

June

June is warm with highs of 30°C and lows of 21°C. Moderate rainfall (38 mm) and mostly sunny skies.

91 Ideal

Comfort

25°
Feels Like Warm
25°C
Temperature
21° 30°
71%
Humidity
Very Humid

Weather

38 mm
Rainfall
2.4 m/s
Wind
Calm
1.9
UV Index
Very High
11.5h daylight

July

July is warm with highs of 29°C and lows of 20°C. Light rainfall and mostly sunny skies.

96 Ideal

Comfort

25°
Feels Like Warm
25°C
Temperature
20° 29°
68%
Humidity
Humid

Weather

20 mm
Rainfall
4.2 m/s
Wind
Light Breeze
2.0
UV Index
Very High
11.6h daylight

August

August is warm with highs of 29°C and lows of 20°C. The driest month with just 6 mm and clear sunny skies.

98 Ideal

Comfort

25°
Feels Like Warm
25°C
Temperature
20° 29°
65%
Humidity
Humid

Weather

6 mm
Rainfall
4.0 m/s
Wind
Light Breeze
2.4
UV Index
Extreme
11.7h daylight

September

September is warm with highs of 29°C and lows of 21°C. Almost no rain and clear sunny skies.

98 Ideal

Comfort

25°
Feels Like Warm
25°C
Temperature
21° 29°
64%
Humidity
Humid

Weather

7 mm
Rainfall
3.1 m/s
Wind
Light Breeze
2.7
UV Index
Extreme
11.9h daylight

October

October is warm with highs of 30°C and lows of 22°C. Light rainfall and mostly sunny skies.

95 Ideal

Comfort

26°
Feels Like Warm
26°C
Temperature
22° 30°
65%
Humidity
Humid

Weather

29 mm
Rainfall
2.4 m/s
Wind
Calm
2.8
UV Index
Extreme
12.2h daylight

November

November is the hottest month, feeling like 29°C. Significant rainfall (108 mm).

81 Excellent

Comfort

29°
Feels Like Hot
27°C
Temperature
23° 31°
68%
Humidity
Humid

Weather

108 mm
Rainfall
2.1 m/s
Wind
Calm
2.8
UV Index
Extreme
12.4h daylight

December

December is warm with stifling humidity (dew point 24°C). Heavy rain (206 mm) and mostly overcast skies.

65 Good

Comfort

26°
Feels Like Warm
26°C
Temperature
23° 30°
77%
Humidity
Very Humid

Weather

206 mm
Rainfall
1.9 m/s
Wind
Calm
2.6
UV Index
Extreme
12.5h daylight

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