Hahajima

Island Remote Ogasawara island with subtropical forests and wildlife

Hahajima, part of Japan’s Ogasawara (Bonin) Islands, offers subtropical forests, endemic wildlife and clear seas. Remote ferry access from Tokyo brings divers, whale-watchers and naturalists seeking rare species and seldom-visited island landscapes.

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Hahajima is one of the inhabited islands of the Ogasawara (Bonin) archipelago administered by Tokyo Metropolis and noted for its distinct subtropical ecosystems. The island is recognized for endemic species of plants and animals and is included in the Ogasawara Islands UNESCO World Heritage listing.

Natural attractions include native forests, coastal cliffs, and marine environments that support seabird colonies and unique terrestrial fauna; conservation measures regulate access to sensitive habitats. Small local communities maintain basic visitor facilities while limiting large-scale development to protect the island’s ecology.

The islands were colonized and settled in modern times and have since been managed for conservation as well as local livelihoods; scientific studies and protected-area management address invasive species and habitat preservation. Tourism is controlled and often organized through licensed operators.

Hahajima lies in the Pacific Ocean roughly 1,000 kilometres south of central Tokyo as part of the Ogasawara group, in a remote volcanic island chain administered by Tokyo Metropolis.

  • UNESCO designation: Part of the Ogasawara (Bonin) Islands UNESCO World Heritage site listed in 2011 for its endemic biodiversity and island ecosystems.
  • Access note: The Ogasawara archipelago lies about 1,000 kilometres south of Tokyo; travel to the islands requires a long ferry or organized boat services with limited schedules.
Hahajima
Hahajima, Ogasawara (Bonin) Islands, Tokyo Prefecture, Japan
26.6685, 142.1541

How to Get to Hahajima #

Access via the Ogasawara Ferry from Tokyo’s Takeshiba pier to Chichijima; onward connections to Hahajima by local boat or ferry-schedules are infrequent and journeys take many hours, so book well in advance.

Tips for Visiting Hahajima #

  • Hahajima is remote-book ferries and flights well in advance and confirm connections to the Ogasawara (Bonin) Islands.
  • Visitors should be prepared for basic facilities and bring cash; services are limited compared with mainland Japan.
  • Respect local wildlife protections-the islands have unique ecosystems with endemic species and strict conservation rules.

Best Time to Visit Hahajima #

Spring through autumn is best for access and marine activities; book travel far in advance.

Spring-Autumn
April-October · 18-28°C (64-82°F)
Best for outdoor activities, diving and birdwatching; humid subtropical conditions.
Winter
November-March · 12-20°C (54-68°F)
Milder temperatures but fewer services and limited ferry schedules.

Weather & Climate near Hahajima #

Climate

Subtropical climate with hot summers (peaking in August) and mild winters (coldest in February). Temperatures range from 14°C to 28°C. Abundant rainfall (1337 mm/year), wettest in May.

Best Time to Visit
JulySeptemberAugust
Temperature & Rainfall
Temperature Range
30°
Warmest Month
15°
Coldest Month
Monthly Conditions

January

January is cool with highs of 19°C and lows of 15°C. Regular rainfall (81 mm), partly cloudy skies, and breezy conditions.

66 Good

Comfort

17°
Feels Like Cool
17°C
Temperature
15° 19°
72%
Humidity
Very Humid

Weather

81 mm
Rainfall
6.1 m/s
Wind
Breezy
1.0
UV Index
Moderate
10.6h daylight

February

February is the coolest month with highs of 19°C and lows of 14°C. Moderate rainfall (68 mm), partly cloudy skies, and breezy conditions.

72 Very Good

Comfort

17°
Feels Like Cool
17°C
Temperature
14° 19°
74%
Humidity
Very Humid

Weather

68 mm
Rainfall
6.1 m/s
Wind
Breezy
1.4
UV Index
High
11.1h daylight

March

March is cool with highs of 20°C and lows of 16°C. Moderate rainfall (68 mm) and partly cloudy skies.

70 Very Good

Comfort

18°
Feels Like Cool
18°C
Temperature
16° 20°
77%
Humidity
Very Humid

Weather

68 mm
Rainfall
5.9 m/s
Wind
Light Breeze
1.7
UV Index
Very High
11.9h daylight

April

April is mild with highs of 22°C and lows of 18°C. Regular rainfall (95 mm) and partly cloudy skies.

76 Very Good

Comfort

20°
Feels Like Mild
20°C
Temperature
18° 22°
82%
Humidity
Very Humid

Weather

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

May

May is mild with highs of 24°C and lows of 20°C. The wettest month with heavy rain (163 mm) and partly cloudy skies.

72 Very Good

Comfort

22°
Feels Like Mild
22°C
Temperature
20° 24°
88%
Humidity
Very Humid

Weather

163 mm
Rainfall
5.2 m/s
Wind
Light Breeze
2.1
UV Index
Extreme
13.3h daylight

June

June is warm with stifling humidity (dew point 24°C). Significant rainfall (127 mm) and partly cloudy skies.

78 Very Good

Comfort

24°
Feels Like Warm
24°C
Temperature
22° 26°
87%
Humidity
Very Humid

Weather

127 mm
Rainfall
4.6 m/s
Wind
Light Breeze
2.5
UV Index
Extreme
13.6h daylight

July

July is warm with stifling humidity (dew point 25°C). Regular rainfall (91 mm).

84 Excellent

Comfort

26°
Feels Like Warm
26°C
Temperature
24° 28°
82%
Humidity
Very Humid

Weather

91 mm
Rainfall
4.8 m/s
Wind
Light Breeze
2.6
UV Index
Extreme
13.5h daylight

August

August is the warmest month with stifling humidity (dew point 25°C). Significant rainfall (113 mm) and partly cloudy skies.

80 Excellent

Comfort

26°
Feels Like Warm
26°C
Temperature
24° 28°
83%
Humidity
Very Humid

Weather

113 mm
Rainfall
5.4 m/s
Wind
Light Breeze
2.4
UV Index
Extreme
12.9h daylight

September

September is warm with stifling humidity (dew point 25°C). Significant rainfall (120 mm).

82 Excellent

Comfort

26°
Feels Like Warm
26°C
Temperature
24° 28°
82%
Humidity
Very Humid

Weather

120 mm
Rainfall
5.8 m/s
Wind
Light Breeze
2.1
UV Index
Extreme
12.2h daylight

October

October is warm with muggy conditions (dew point 24°C). Significant rainfall (151 mm) and partly cloudy skies.

76 Very Good

Comfort

25°
Feels Like Warm
25°C
Temperature
23° 26°
81%
Humidity
Very Humid

Weather

151 mm
Rainfall
5.0 m/s
Wind
Light Breeze
1.6
UV Index
Very High
11.4h daylight

November

November is mild with highs of 24°C and lows of 20°C. Significant rainfall (145 mm) and partly cloudy skies.

78 Very Good

Comfort

22°
Feels Like Mild
22°C
Temperature
20° 24°
78%
Humidity
Very Humid

Weather

145 mm
Rainfall
5.9 m/s
Wind
Light Breeze
1.1
UV Index
High
10.7h daylight

December

December is mild with highs of 21°C and lows of 17°C. Significant rainfall (115 mm) and partly cloudy skies.

66 Good

Comfort

19°
Feels Like Mild
19°C
Temperature
17° 21°
75%
Humidity
Very Humid

Weather

115 mm
Rainfall
5.8 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
10.4h daylight

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