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Weather in Mount Rinjani
Sacred crater lake trek on Lombok's volcanic peak
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About Mount Rinjani
Mount Rinjani's crater contains a sacred freshwater lake at 2,000 meters, accessible via a challenging trek ascending through jungle to alpine grandeur. This volcano represents Lombok's spiritual geography where trekking becomes pilgrimage for local and international visitors.
Best months to visit
Year-round
Language
Indonesian, English
Things to do in Mount Rinjani
2-3 day crater lake trekking expeditions
Sunrise summit climb to viewpoint peaks
Lake shore meditation and prayer sessions
Hot spring bathing in geothermal water
Mountain guide porter cultural interactions
Photography of crater lake reflections
Weather by month
Click any month for detailed weather information and travel tips.
January
10C
Cool, with frequent heavy rain.
February
10C
Cool, with frequent heavy rain.
March
10C
Cool, with frequent heavy rain.
April
10C
Cool, with frequent heavy rain.
May
10C
Cool, with regular rainfall.
June
10C
Cool, with regular rainfall.
July
9C
Cold, with some rainy days.
August
10C
Cool, with some rainy days.
September
11C
Cool, with some rainy days.
October
12C
Cool, with some rainy days.
November
11C
Cool, with frequent heavy rain.
December
10C
Cool, with frequent heavy rain.
Mount Rinjani, Indonesia's second-highest volcano at 3,726 metres, dominates Lombok's skyline and rewards multi-day trekkers with one of Southeast Asia's most dramatic crater landscapes — Segara Anak, a vast turquoise lake with its own smaller active cone, Gunung Baru, rising from within it, plus natural hot springs on the crater's edge. The summit push for sunrise is gruelling, but even reaching the rim camps delivers views that rank among the best in Indonesia.
Best areas to stay in Mount Rinjani
Senaru
The northern trailhead village, with a waterfall, basic guesthouses, and views straight up toward the crater rim.
Sembalun
The eastern trailhead village, set in a high valley of garlic and tobacco fields, generally considered the better route for reaching the summit.
Segara Anak Crater Lake
The vast crescent-shaped lake within Rinjani's caldera, with hot springs at Aiq Kalak on its shore — the highlight of the multi-day trek.
Rinjani Summit
The 3,726-metre peak, reached via a steep pre-dawn scramble from the crater rim for sunrise views across Lombok and toward Bali's Mount Agung.
Getting to Mount Rinjani
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Flights
Fly into Lombok International Airport (LOP), then transfer by road (2-3 hours) to either the Senaru or Sembalun trailhead.
⏱
From London
~17-19 hours total journey time from London via Jakarta or Singapore
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Getting around
Treks are arranged through licensed operators who handle all transport between trailheads, porters, guides, and camping equipment.
Frequently asked questions
When is the best time to climb Mount Rinjani?
The trekking season runs April to December; the park is officially closed January to March for the wet season, when trails become dangerous. July to September is busiest and driest.
How do I get to Mount Rinjani?
The two main trailheads, Senaru and Sembalun, are reached by road from Lombok International Airport (LOP) or Mataram, each around 2-3 hours depending on the route.
What is there to do at Mount Rinjani?
The classic trek is a 2-3 day crossing between Senaru and Sembalun, taking in the crater rim, Segara Anak lake, the hot springs at Aiq Kalak, and optionally the summit push for sunrise.
What food is available on Mount Rinjani treks?
Trekking is organised through licensed guides who provide porters, tents, and meals — typically rice, noodles, vegetables, and tea cooked at camp, with simple warungs at the trailhead villages.
Is English widely spoken on Mount Rinjani treks?
Guides for foreign trekkers generally speak good English, as this is one of Indonesia's most established multi-day trekking routes for international visitors.
Traveler reviews
★★★★★
The crater rim camp overlooking Segara Anak lake at sunset was one of the most spectacular views I've ever camped with. The summit push at 2am was punishing — scree slopes in the dark — but the sunrise from the top over Lombok and Bali made it unforgettable.
Marcus T. · August 2024
★★★★☆
Did the Senaru to Sembalun crossing over three days and it was tough but incredibly rewarding — soaking in the hot springs by the crater lake after a long descent was bliss. Our guides and porters were fantastic.
Ayesha R. · July 2023
★★★★☆
Harder than I expected, especially the summit night, but the scenery throughout — savanna ridges, the crater lake, the smoking inner cone — was constantly changing and never less than dramatic.
Joel F. · September 2024
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