November is the wet-season return. First week sometimes climbable, rest of month effectively closed. Wait for April.
November sees Pergasingan Hill effectively closing as wet-season conditions return. Rainfall doubles versus October, sunrise visibility drops below 50%, and the Sembalun guide cooperative reduces operations significantly. By mid-November, climbs are not recommended. Wait for April.
# Pergasingan Hill in November: The Wet Season Returns
November is when Pergasingan Hill transitions from late dry-season into the wet season closure that lasts through March. Rainfall doubles versus October, summit fog returns, and the Sembalun guide cooperative steadily reduces operations as the month progresses. By mid-November, the hill is effectively closed for the year.
If you're researching November for a Pergasingan trip, this page is here to redirect you to April.
November is a transition month, but the transition is mostly downhill from a climbing perspective:
Week 1 (November 1-7): Sometimes still climbable. October patterns occasionally extend into early November. Cooperative still taking limited bookings if conditions allow.
Week 2 (November 8-14): First sustained wet patterns arriving. Sunrise visibility drops to 50% or worse. Cooperative reduces bookings.
Week 3 (November 15-21): Effectively closed. Trails wet, fog persistent, no commercial climbs running.
Week 4 (November 22-30): Wet-season pattern fully established. Closure aligns with December-March situation.
The 180mm rainfall is twice October's 90mm. The 14 rainy days versus October's 8 means roughly half the calendar gets rain. The pattern shifts from afternoon-only showers to all-day wet conditions in the second half.
Two factors combine:
1. Visibility becomes unreliable. The whole point of Pergasingan is the sunrise view. November summit fog persists through dawn most mornings. You climb in the dark, arrive at the summit, see grey-white nothing. Even when partial views appear, the dramatic atmospheric quality of dry-season sunrises is gone.
2. Trails become unsafe. The volcanic clay that defines Pergasingan's path turns slick within days of sustained rain. Lower trail sections handle the wet okay. The exposed upper shoulder becomes genuinely dangerous — same problem as January-March.
The Sembalun guide cooperative's approach is to taper operations through November rather than declaring a hard closure date. By the time it's clearly closed, it's been not really viable for two weeks.
Sembalun valley itself remains accessible:
For travelers determined to visit Sembalun in November, focus on these valley-level experiences and skip the hill itself.
If your November Lombok trip is locked in:
Skip Pergasingan and Rinjani entirely. Both are effectively closed. Plan your trip around:
Reschedule the climb to April-September. Pergasingan is worth the wait. April is the cautious reopening, May-September is peak window.
Don't trust November cooperative-bypass operators. A few freelance guides will still quote November climbs. They aren't running with the cooperative's safety standards or insurance, and conditions don't justify the risk.
The wet-season closure runs:
For travelers planning future trips, target May, June, July, August, or September for the best Pergasingan experience.
Statistically, November (180mm, 14 days) and April (150mm, 12 days) look similar. In practice, November is far worse for climbing:
A November statistical "good day" still feels like a closing-down experience. An April "average day" feels like a season opening up.
November is essentially a no-go month for Pergasingan Hill. The first week sometimes offers a window, but it's not bookable in advance. Plan your trip around other Lombok activities and book Pergasingan for a future April-September visit. The hill will still be there when conditions return.
If you absolutely have to be in Sembalun in November, target the first week of the month. Sometimes the wet season holds off until November 8-10, leaving a brief window where early-morning climbs are still occasionally possible. Talk to the cooperative on arrival — they'll know if conditions allow. But don't book travel expecting this window. By mid-November, it's effectively over until April.