Viper Island

Island Small Andaman island with colonial-era prison history

Off Port Blair in the Andamans, Viper Island retains colonial-era jail ruins and a small lighthouse; day-trippers arrive by boat to see inscriptions, the gallows site and coastal views back toward the main island.

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Viper Island is a small island in the South Andaman group, located within the harbour area of Port Blair in the Andaman and Nicobar Islands. It is best known for visible remains of a British-era penal settlement on its shoreline.

Ruined masonry, collapsed structures and an area traditionally identified as a gallows comprise the main on-island attractions; these lie within a compact area close to the landing. Views across the harbour toward Port Blair and neighboring islands are a secondary draw, and visits are typically part of short island or harbour tours.

The island was used by the British colonial administration as part of their penal system during the 19th century and later; the surviving masonry and burial sites date to that colonial period. The structures fell out of official use as larger penal institutions were established elsewhere in the Andamans.

The island sits within Port Blair harbour on South Andaman Island and is reached by a short boat trip from Port Blair’s waterfront. It is visible from the harbour and lies close to other small historic islands used during the colonial period.

  • Access: Accessible on short boat trips from Port Blair harbour; landing is by small passenger boat rather than large ferries.
  • Visitor note: No large visitor facilities on the island, so bring water and sun protection; visits are usually combined with harbour or island tours from Port Blair.

What to See #

  • Penitentiary ruins: Remains of the British-era penal settlement including masonry foundations and the execution site can be seen across a compact shoreline area; many features are visible from the island's main landing point.
  • Cemetery and gallows: A small cemetery and the site traditionally referred to as the gallows lie close to the ruins and are interpreted as part of the colonial penal complex.
Viper Island
11.6667, 92.7000
Daytime access only (boat trips typically run morning to mid-afternoon)

How to Get to Viper Island #

Day-boat services to Viper Island depart from Phoenix Bay Jetty in Port Blair; crossings are short (typically 20-30 minutes) but schedules depend on weather and tides. Tickets are sold at Port Blair’s docks and via local operators.

Tips for Visiting Viper Island #

  • Boat schedules to Viper Island leave from Phoenix Bay Jetty in Port Blair - confirm times locally as they can change with weather.
  • Respect the site's solemn history: the island houses a former British penal settlement and many visitors leave flowers or small notes at the ruins.
  • Bring sun protection; shade is sparse on the island and return boats can be delayed in rough seas.

Best Time to Visit Viper Island #

Visit in the dry season for reliable boat crossings and calmer seas.

Dry season (October-May)
Oct-May · 24-30°C
Best sea conditions for boat crossings and clearer skies for exploring the ruins.
Monsoon (June-September)
Jun-Sep · 25-30°C
Rough seas and heavy rain; many boat services reduce or suspend trips.

Weather & Climate near Viper Island #

Climate

Tropical climate with consistently warm temperatures year-round. Temperatures range from 22°C to 32°C. Heavy rainfall (2527 mm/year), wettest in September with a pronounced dry season.

Best Time to Visit
FebruaryMarchJanuary
Temperature & Rainfall
Temperature Range
33°
Warmest Month
24°
Coldest Month
Monthly Conditions

January

January is warm with muggy conditions (dew point 22°C). Moderate rainfall (37 mm) and partly cloudy skies.

87 Excellent

Comfort

26°
Feels Like Warm
26°C
Temperature
23° 29°
75%
Humidity
Very Humid

Weather

37 mm
Rainfall
2.0 m/s
Wind
Calm
1.9
UV Index
Very High
11.4h daylight

February

February is warm with highs of 30°C and lows of 22°C. The driest month with just 24 mm and mostly sunny skies.

93 Ideal

Comfort

26°
Feels Like Warm
26°C
Temperature
23° 30°
72%
Humidity
Very Humid

Weather

24 mm
Rainfall
1.7 m/s
Wind
Calm
2.2
UV Index
Extreme
11.7h daylight

March

March is hot, feeling like 29°C due to high humidity. Moderate rainfall (40 mm).

89 Excellent

Comfort

29°
Feels Like Hot
27°C
Temperature
23° 31°
71%
Humidity
Very Humid

Weather

40 mm
Rainfall
1.9 m/s
Wind
Calm
2.5
UV Index
Extreme
12.0h daylight

April

April is the hottest month, feeling like 32°C due to high humidity. Significant rainfall (111 mm) and partly cloudy skies.

71 Very Good

Comfort

32°
Feels Like Hot
29°C
Temperature
25° 32°
72%
Humidity
Very Humid

Weather

111 mm
Rainfall
2.1 m/s
Wind
Calm
2.6
UV Index
Extreme
12.3h daylight

May

May is hot, feeling like 32°C due to high humidity. Heavy rain (296 mm) and mostly overcast skies.

63 Good

Comfort

32°
Feels Like Hot
28°C
Temperature
25° 31°
79%
Humidity
Very Humid

Weather

296 mm
Rainfall
2.4 m/s
Wind
Calm
2.0
UV Index
Very High
12.5h daylight

June

June is hot, feeling like 30°C with oppressive humidity. Heavy rain (332 mm) and mostly overcast skies.

64 Good

Comfort

30°
Feels Like Hot
27°C
Temperature
25° 30°
83%
Humidity
Very Humid

Weather

332 mm
Rainfall
3.0 m/s
Wind
Light Breeze
1.9
UV Index
Very High
12.7h daylight

July

July is warm with stifling humidity (dew point 25°C). Heavy rain (331 mm) and mostly overcast skies.

63 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
24° 29°
84%
Humidity
Very Humid

Weather

331 mm
Rainfall
2.7 m/s
Wind
Calm
1.9
UV Index
Very High
12.6h daylight

August

August is warm with stifling humidity (dew point 25°C). Heavy rain (341 mm) and mostly overcast skies.

63 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
24° 29°
84%
Humidity
Very Humid

Weather

341 mm
Rainfall
2.7 m/s
Wind
Calm
2.0
UV Index
Extreme
12.4h daylight

September

September is warm with stifling humidity (dew point 25°C). The wettest month with heavy rain (390 mm) and mostly overcast skies.

63 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
24° 29°
83%
Humidity
Very Humid

Weather

390 mm
Rainfall
2.0 m/s
Wind
Calm
2.0
UV Index
Extreme
12.1h daylight

October

October is warm with stifling humidity (dew point 24°C). Heavy rain (309 mm) and mostly overcast skies.

65 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
24° 30°
81%
Humidity
Very Humid

Weather

309 mm
Rainfall
1.7 m/s
Wind
Calm
2.0
UV Index
Extreme
11.8h daylight

November

November is warm with stifling humidity (dew point 24°C). Heavy rain (217 mm) and partly cloudy skies.

69 Good

Comfort

27°
Feels Like Warm
27°C
Temperature
24° 30°
79%
Humidity
Very Humid

Weather

217 mm
Rainfall
2.1 m/s
Wind
Calm
1.8
UV Index
Very High
11.5h daylight

December

December is warm with muggy conditions (dew point 23°C). Regular rainfall (99 mm) and partly cloudy skies.

77 Very Good

Comfort

26°
Feels Like Warm
26°C
Temperature
23° 29°
77%
Humidity
Very Humid

Weather

99 mm
Rainfall
2.3 m/s
Wind
Calm
1.7
UV Index
Very High
11.3h daylight

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