Danger Island, Great Chagos Bank

Island Remote coral atoll in Chagos, important bird sanctuary

Danger Island in the Great Chagos Bank is an uninhabited coral island important for seabirds and reef research; access is restricted and primarily for scientific expeditions.

Main image

Danger Island is a small, uninhabited island on the Great Chagos Bank in the Chagos Archipelago of the central Indian Ocean. It is remote and lies within the British Indian Ocean Territory maritime area.

The island and its surrounding reef support seabird colonies and relatively intact coral reef systems, making it significant for biodiversity and marine habitats. Human activity on the island is minimal and access is restricted as part of conservation management.

Danger Island sits on the extensive shallow platform of the Great Chagos Bank, one of the largest coral atoll structures in the world, and is separated from inhabited islands of the archipelago by open ocean waters.

  • Conservation status: Part of the Chagos Archipelago and included within the Chagos Marine Protected Area, with important seabird colonies and fringing coral reefs.
Danger Island, Great Chagos Bank
-6.3887, 71.2396

How to Get to Danger Island, Great Chagos Bank #

Visits to Danger Island require formal permission from the British Indian Ocean Territory administration and are typically limited to authorized scientific or conservation missions. Access is by long-range vessel; approach is hazardous and requires experience with atoll navigation.

Tips for Visiting Danger Island, Great Chagos Bank #

  • Strictly no landing without permission-Danger Island is within the Chagos Marine Protected Area with restricted access.
  • Visit is typically limited to scientific or conservation missions coordinated through the British Indian Ocean Territory administration.
  • If travel is authorized, plan long-range logistics: vessels must be self-sufficient and carry fuel, freshwater and emergency comms.

Best Time to Visit Danger Island, Great Chagos Bank #

Access is heavily restricted year-round; weather windows in the southeast trade-wind season can be more favorable for authorized visits.

Southeast trade wind season
May-October · 24-28°C (75-82°F)
Calmer seas and better sea-conditions for long-range travel.
Northwest monsoon season
November-April · 26-31°C (79-88°F)
Rougher seas and higher rainfall; access is more hazardous.

Weather & Climate near Danger Island, Great Chagos Bank #

Climate

Tropical climate with consistently warm temperatures year-round. Temperatures range from 25°C to 32°C. Heavy rainfall (2586 mm/year), wettest in January.

Best Time to Visit
JuneJulyOctober
Temperature & Rainfall
Temperature Range
30°
Warmest Month
25°
Coldest Month
Monthly Conditions

January

January is hot, feeling like 34°C with oppressive humidity. The wettest month with heavy rain (324 mm) and partly cloudy skies.

59 Acceptable

Comfort

34°
Feels Like Hot
29°C
Temperature
26° 31°
82%
Humidity
Very Humid

Weather

324 mm
Rainfall
2.5 m/s
Wind
Calm
2.6
UV Index
Extreme
12.3h daylight

February

February is hot, feeling like 34°C with oppressive humidity. Heavy rain (265 mm) and partly cloudy skies.

59 Acceptable

Comfort

34°
Feels Like Hot
29°C
Temperature
26° 31°
81%
Humidity
Very Humid

Weather

265 mm
Rainfall
2.5 m/s
Wind
Calm
2.8
UV Index
Extreme
12.2h daylight

March

March is hot, feeling like 35°C with oppressive humidity. Heavy rain (214 mm) and partly cloudy skies.

63 Good

Comfort

35°
Feels Like Hot
29°C
Temperature
26° 32°
80%
Humidity
Very Humid

Weather

214 mm
Rainfall
2.4 m/s
Wind
Calm
2.8
UV Index
Extreme
12.0h daylight

April

April is the hottest month, feeling like 36°C with oppressive humidity. Significant rainfall (174 mm) and partly cloudy skies.

61 Good

Comfort

36°
Feels Like Hot
29°C
Temperature
27° 32°
80%
Humidity
Very Humid

Weather

174 mm
Rainfall
2.4 m/s
Wind
Calm
2.5
UV Index
Extreme
11.9h daylight

May

May is hot, feeling like 34°C with oppressive humidity. Significant rainfall (165 mm) and partly cloudy skies.

61 Good

Comfort

34°
Feels Like Hot
29°C
Temperature
26° 31°
81%
Humidity
Very Humid

Weather

165 mm
Rainfall
2.9 m/s
Wind
Calm
2.1
UV Index
Extreme
11.7h daylight

June

June is hot, feeling like 33°C with oppressive humidity. Significant rainfall (135 mm) and partly cloudy skies.

74 Very Good

Comfort

33°
Feels Like Hot
28°C
Temperature
26° 31°
82%
Humidity
Very Humid

Weather

135 mm
Rainfall
4.7 m/s
Wind
Light Breeze
1.9
UV Index
Very High
11.6h daylight

July

July is hot, feeling like 31°C with oppressive humidity. Significant rainfall (134 mm) and mostly overcast skies.

70 Very Good

Comfort

31°
Feels Like Hot
28°C
Temperature
25° 30°
81%
Humidity
Very Humid

Weather

134 mm
Rainfall
5.0 m/s
Wind
Light Breeze
1.9
UV Index
Very High
11.7h daylight

August

August is hot, feeling like 31°C with oppressive humidity. Significant rainfall (151 mm) and mostly overcast skies.

68 Good

Comfort

31°
Feels Like Hot
27°C
Temperature
25° 30°
82%
Humidity
Very Humid

Weather

151 mm
Rainfall
4.2 m/s
Wind
Light Breeze
2.2
UV Index
Extreme
11.8h daylight

September

September is hot, feeling like 31°C with oppressive humidity. Heavy rain (234 mm) and mostly overcast skies.

66 Good

Comfort

31°
Feels Like Hot
28°C
Temperature
25° 30°
82%
Humidity
Very Humid

Weather

234 mm
Rainfall
3.2 m/s
Wind
Light Breeze
2.4
UV Index
Extreme
12.0h daylight

October

October is hot, feeling like 32°C with oppressive humidity. Heavy rain (272 mm) and partly cloudy skies.

69 Good

Comfort

32°
Feels Like Hot
28°C
Temperature
25° 31°
81%
Humidity
Very Humid

Weather

272 mm
Rainfall
2.5 m/s
Wind
Calm
2.6
UV Index
Extreme
12.1h daylight

November

November is hot, feeling like 33°C with oppressive humidity. Heavy rain (224 mm) and partly cloudy skies.

61 Good

Comfort

33°
Feels Like Hot
28°C
Temperature
26° 31°
81%
Humidity
Very Humid

Weather

224 mm
Rainfall
1.6 m/s
Wind
Calm
2.6
UV Index
Extreme
12.3h daylight

December

December is hot, feeling like 34°C with oppressive humidity. Heavy rain (294 mm) and partly cloudy skies.

59 Acceptable

Comfort

34°
Feels Like Hot
29°C
Temperature
26° 32°
82%
Humidity
Very Humid

Weather

294 mm
Rainfall
1.5 m/s
Wind
Calm
2.6
UV Index
Extreme
12.4h daylight

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