MarumMarum at a Glance
About Marum
Marum is an active volcanic crater on Ambrym Island in Malampa Province, Vanuatu and is one of the island’s main eruptive centers. It is noted for high-temperature activity and for producing lava-lake phenomena on occasion.
The crater is a major reason visitors and scientists travel to Ambrym, with viewpoints on the caldera rim used to observe incandescent activity and gas emissions. Visits are typically arranged as guided treks from local villages, and conditions can change rapidly during eruptive episodes.
Marum sits within Ambrym’s larger volcanic complex alongside the nearby Benbow crater; both craters have a history of frequent activity and have shaped the island’s volcanic landscape. The craters remain active and are monitored by Vanuatu geological authorities.
The crater complex is located inland on Ambrym Island in Malampa Province, roughly in the island’s central caldera area.
- Activity and access: Known for persistent volcanic activity and occasional lava-lake visibility; crater access requires experienced guides and local permissions.
- Geology: Located within Ambrym’s caldera system alongside Benbow, forming the island’s primary volcanic centers.
What to See#
- Marum crater: An active summit crater that frequently hosts incandescent activity and lava lake phenomena; one of Ambrym’s principal eruptive vents.
- Benbow crater: A neighboring crater within the same volcanic complex that is also active and commonly displays fumarolic and eruptive behavior.
Best Time to Visit Marum
Best attempted during the dry season when trails are passable and guides are more reliable.
Weather & Climate near Marum
Marum's climate is classified as Tropical Rainforest - Tropical Rainforest climate with consistently warm temperatures year-round. Temperatures range from 16°C to 27°C. Heavy rainfall (3950 mm/year), wettest in April.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | - | 19° - 27° | 23° | 386 mm | - | - | 3.1 m/s | - | - |
| February | - | 19° - 27° | 23° | 385 mm | - | - | 3.4 m/s | - | - |
| March | - | 19° - 27° | 23° | 413 mm | - | - | 3.4 m/s | - | - |
| April | - | 18° - 26° | 22° | 431 mm | - | - | 4.2 m/s | - | - |
| May | - | 18° - 25° | 21° | 280 mm | - | - | 4.1 m/s | - | - |
| June | - | 17° - 24° | 20° | 271 mm | - | - | 3.9 m/s | - | - |
| July | - | 16° - 23° | 19° | 258 mm | - | - | 3.8 m/s | - | - |
| August | - | 16° - 23° | 20° | 195 mm | - | - | 4.4 m/s | - | - |
| September | - | 16° - 24° | 20° | 284 mm | - | - | 4.0 m/s | - | - |
| October | - | 16° - 25° | 21° | 315 mm | - | - | 4.2 m/s | - | - |
| November | - | 17° - 26° | 22° | 350 mm | - | - | 4.1 m/s | - | - |
| December | - | 18° - 27° | 23° | 382 mm | - | - | 3.7 m/s | - | - |
How to Get to Marum
Fly to Port Vila (Efate) and then take domestic transport (charter flight or inter-island service) to Ambrym; from the island’s villages, local guides and 4WD tracks lead to trailheads. Travel logistics vary; contact Vanuatu tourism operators for current schedules and permit requirements.
Tips for Visiting Marum
- If visiting Ambrym's crater area, hire an experienced local guide and follow village protocols - the volcano is culturally significant and access is controlled.
- Travel at night if hoping to glimpse the glow of lava (when safe and permissible), but do so only with an accredited guide and stable viewing platforms.
- Bring a headlamp and warm clothing; the climb to the caldera involves rough trails and cold, windy conditions.