Agrihan at a Glance
About Agrihan
Agrihan is a volcanic island in the Northern Mariana Islands group in the northwest Pacific Ocean. The island contains the Mariana island chain’s highest point, Mount Agrihan.
A sparsely inhabited or uninhabited volcanic landscape with steep slopes rising to the island’s summit; natural features include tropical vegetation and volcanic terrain rather than developed visitor infrastructure. Access is by boat or occasional charter flights and is limited compared with more developed islands.
Formed by volcanic activity, the island has a history of small-scale habitation and periodic evacuation; it has seen limited development and remains largely natural in character. The peak has been the subject of mountaineering visits.
Located in the northern part of the Northern Mariana Islands, the island lies well north of the more populated southern islands and is accessible only by sea or chartered air services.
- Highest peak: Home to the highest peak in the Mariana Islands, Mount Agrihan, which reaches approximately 965 metres above sea level.
Best Time to Visit Agrihan
Visit in the drier months when sea conditions are more favorable; charter logistics dominate planning.
Weather & Climate near Agrihan
Agrihan's climate is classified as Tropical Monsoon - Tropical Monsoon climate with consistently warm temperatures year-round. Temperatures range from 19°C to 28°C. Abundant rainfall (1746 mm/year), wettest in August.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | - | 20° - 25° | 22° | 105 mm | - | - | 6.8 m/s | - | - |
| February | - | 19° - 24° | 22° | 76 mm | - | - | 6.4 m/s | - | - |
| March | - | 20° - 25° | 23° | 70 mm | - | - | 6.7 m/s | - | - |
| April | - | 21° - 26° | 24° | 87 mm | - | - | 6.5 m/s | - | - |
| May | - | 22° - 27° | 25° | 97 mm | - | - | 5.6 m/s | - | - |
| June | - | 23° - 28° | 26° | 100 mm | - | - | 5.3 m/s | - | - |
| July | - | 23° - 28° | 26° | 213 mm | - | - | 4.8 m/s | - | - |
| August | - | 23° - 28° | 26° | 252 mm | - | - | 5.0 m/s | - | - |
| September | - | 23° - 28° | 26° | 251 mm | - | - | 5.0 m/s | - | - |
| October | - | 23° - 28° | 25° | 218 mm | - | - | 5.4 m/s | - | - |
| November | - | 22° - 27° | 25° | 153 mm | - | - | 6.3 m/s | - | - |
| December | - | 21° - 26° | 23° | 124 mm | - | - | 6.6 m/s | - | - |
How to Get to Agrihan
Access is by private charter-small aircraft from Saipan when flights are available, or by boat. There are no regular commercial services; visitors must arrange transport and clearance in advance.
Tips for Visiting Agrihan
- Agrihan is remote and requires chartered transport-small aircraft or boat charters are the only realistic ways to reach the island.
- Bring supplies and emergency communications; there is virtually no tourist infrastructure and weather can strand visitors.
- For those interested in geography, Agrihan's remnant caldera and steep slopes make it a dramatic site for photography and volcanic study.