Aguiguan

Island Small uninhabited Mariana island with steep coastal cliffs

Aguiguan (Aguijan), south of Tinian in the Mariana chain, is a small largely uninhabited island; boaters and birdwatchers visit for seabird colonies and snorkeling along rocky shores, with limited access.

Main image

Aguiguan (also spelled Aguijan) is a small, uninhabited island in the Northern Mariana Islands, administered as part of Tinian Municipality. The island is limestone in origin, lies just south of Tinian and has no permanent population.

Historically it has been used intermittently for grazing and small-scale subsistence activities by nearby islanders; today it is largely a wildlife refuge with seabird colonies and native vegetation. Access is by small boat from Tinian and visits are infrequent.

Geographically it sits a short distance south of the island of Tinian in the western Pacific and is part of the Northern Mariana archipelago.

  • Administrative status: Administratively part of Tinian Municipality in the Northern Mariana Islands and commonly referred to as Aguijan or "Goat Island."
Aguiguan
14.8500, 145.5590

How to Get to Aguiguan #

Aguiguan is reached by private boat from Tinian. There are no regular ferry services; visits should be coordinated with licensed local skippers familiar with the reefed approach and local weather patterns.

Tips for Visiting Aguiguan #

  • If attempting a visit (rare and restricted), coordinate with Tinian authorities - Aguiguan is administered as part of Tinian Municipality.
  • The island is known locally as Goat Island; there is no infrastructure - plan for a self-contained day trip and respect local conservation rules.
  • Because of currents and coral reefs, only experienced small-boat operators should attempt landings.

Best Time to Visit Aguiguan #

Best accessed in the dry season with competent local operators; otherwise the island is largely inaccessible.

Dry season
Dec-May · 24-30°C
Calmer seas and more reliable weather for short boat trips from Tinian.
Wet season
Jun-Nov · 24-31°C
More rain and higher seas; typhoon risk increases in late summer and autumn.

Weather & Climate near Aguiguan #

Climate

Tropical climate with consistently warm temperatures year-round. Temperatures range from 24°C to 31°C. Heavy rainfall (2046 mm/year), wettest in September.

Temperature & Rainfall
Temperature Range
31°
Warmest Month
24°
Coldest Month
Monthly Conditions

January

January is warm with highs of 29°C and lows of 24°C. Significant rainfall (110 mm).

Comfort

27°
Feels Like Warm
27°C
Temperature
24° 29°

Weather

110 mm
Rainfall
5.9 m/s
Wind
Light Breeze

February

February is warm with highs of 29°C and lows of 24°C. Regular rainfall (82 mm).

Comfort

26°
Feels Like Warm
26°C
Temperature
24° 29°

Weather

82 mm
Rainfall
5.8 m/s
Wind
Light Breeze

March

March is warm with highs of 29°C and lows of 24°C. Moderate rainfall (78 mm).

Comfort

27°
Feels Like Warm
27°C
Temperature
24° 29°

Weather

78 mm
Rainfall
5.5 m/s
Wind
Light Breeze

April

April is warm with highs of 30°C and lows of 25°C. Regular rainfall (87 mm).

Comfort

28°
Feels Like Warm
28°C
Temperature
25° 30°

Weather

87 mm
Rainfall
5.3 m/s
Wind
Light Breeze

May

May is hot with highs of 31°C and lows of 25°C. Regular rainfall (98 mm).

Comfort

28°
Feels Like Hot
28°C
Temperature
25° 31°

Weather

98 mm
Rainfall
4.5 m/s
Wind
Light Breeze

June

June is the hottest month with highs of 31°C and lows of 26°C. Significant rainfall (120 mm).

Comfort

28°
Feels Like Hot
28°C
Temperature
26° 31°

Weather

120 mm
Rainfall
4.7 m/s
Wind
Light Breeze

July

July is hot with highs of 31°C and lows of 25°C. Heavy rain (246 mm).

Comfort

28°
Feels Like Hot
28°C
Temperature
25° 31°

Weather

246 mm
Rainfall
4.2 m/s
Wind
Light Breeze

August

August is warm with highs of 31°C and lows of 25°C. Heavy rain (308 mm).

Comfort

28°
Feels Like Warm
28°C
Temperature
25° 31°

Weather

308 mm
Rainfall
4.4 m/s
Wind
Light Breeze

September

September is warm with highs of 30°C and lows of 25°C. The wettest month with heavy rain (343 mm).

Comfort

28°
Feels Like Warm
28°C
Temperature
25° 30°

Weather

343 mm
Rainfall
4.0 m/s
Wind
Light Breeze

October

October is warm with highs of 30°C and lows of 25°C. Heavy rain (273 mm).

Comfort

28°
Feels Like Warm
28°C
Temperature
25° 30°

Weather

273 mm
Rainfall
4.6 m/s
Wind
Light Breeze

November

November is warm with highs of 30°C and lows of 25°C. Significant rainfall (178 mm).

Comfort

28°
Feels Like Warm
28°C
Temperature
25° 30°

Weather

178 mm
Rainfall
4.9 m/s
Wind
Light Breeze

December

December is warm with highs of 29°C and lows of 25°C. Significant rainfall (123 mm).

Comfort

27°
Feels Like Warm
27°C
Temperature
25° 29°

Weather

123 mm
Rainfall
5.6 m/s
Wind
Light Breeze

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