General Mount Rinjani Weather Forecast – Best Time to Trek & Seasonal Conditions
Mount Rinjani stands at 3,726 meters, making it one of Indonesia’s most iconic and challenging volcanoes. Due to its high elevation and tropical climate, the weather can shift quickly. Understanding Rinjani’s climate, seasons, and daily weather patterns is essential for planning a safe and enjoyable trekking experience
Understanding Mount Rinjani’s Climate
Rinjani has two major seasons:
Dry Season (April – October)
- Stable weather and mostly clear skies
- Dry and safer trail conditions
- Best chance to reach the summit
- Popular months: July & August
Rainy Season (January – March)
- Heavy rainfall and cloud cover
- Slippery trails and landslide risks
- Rinjani National Park is officially closed from January to march
Temperature by Elevation
- Base Areas (Senaru / Sembalun): 20–30°C
- Crater Rim Camps: 5–15°C
- Summit:2–6°C or lower with strong wind chill
Even in the dry season, temperatures drop significantly at night, especially at the Crater Rim and Summit.
Rinjani Weather by Season
Dry Season (April – October) – Best for Trekking
- Clear skies and excellent visibility
- Safe and dry trails
- Ideal for photography, summit sunrise, and crater lake views
Transition Months (March & November)
- Weather may fluctuate between clear and rainy
- Trails may become damp or slippery
- Still possible to trek with caution and proper gear
Rainy Season (January March) – Park Closed
- Heavy rain increases erosion and landslide risks
- Poor visibility and dangerous trail conditions
- Park authorities close the mountain for safety
Monthly Weather Overview
Month | Weather | Trail Condition | Notes |
Jan–Feb | Heavy Rain | Closed | Unsafe for trekking |
Mar | Light–Moderate Rain | Wet/Muddy | The park still closed |
Apr–Jun | Clear & Dry | Good | Recommended months |
Jul–Aug | Very Clear | Busy Trails | Peak season; book early |
Sep–Oct | Clear w/ Mild Rain | Good | Balanced conditions |
Nov – December | Unstable Weather | Slippery | Start of rainy season |
Best Time to Trek Mount Rinjani
The most recommended months are April to October, with the best balance of weather and visibility from May to September.
Trek during these months for:
- Higher summit success rates
- Comfortable temperatures
- Beautiful sunrise and crater lake views
- Safer trail conditions
Daily Weather Patterns on Mount Rinjani
- Morning: Clear skies, ideal for trekking and visibility
- Afternoon: Clouds may gather; light winds develop
- Night: Very cold, especially at higher altitudes
- Summit Trek: Starts at 2:00–3:00 AM to avoid strong winds and cloud buildup
Safety & Preparation Tips
- Wear multiple layers to adapt to temperature changes
- Bring a poncho or rain cover (weather can change suddenly)
- Stay hydrated to reduce altitude fatigue
- Trek with a licensed guide and porter for safety, navigation, and support
How Authentic Rinjani Keeps You Safe
At Authentic Rinjani, your comfort and safety come first:
- We monitor daily weather forecasts before each summit attempt
- We maintain a Small-group policy (max 6 trekkers) for better guidance
- Our Eco Trekking Program supports sustainable trekking and fair porter wages
- Our team adjusts pace and strategy to ensure you trek safely and comfortably
Check Weather & Plan Your Trek
For real-time weather updates and trek planning assistance, feel free to reach out anytime
Ready to Trek Mount Rinjani? Book with Authentic Rinjani Today!
Experience a safer, cleaner, and more comfortable adventure with Lombok’s trusted trekking company.
Our professional guides, eco-friendly program, small-group policy, and high-quality equipment ensure a premium Rinjani experience from start to finish.
👉 Book your Mount Rinjani Trek now and let our expert team take care of everything!