The best time to trek Mount Rinjani is during the dry season, which runs from April to December. Here’s a breakdown of what to expect in each period:

Best Months: April – December (Dry Season)

Here is a guide for you to pick the best time, highlighting the pros and pros, together with the temps for each season.

April to May

Temperature: Daytime 22°C–31°C, Nighttime 6 to 8°C

Pros: The trees and meadow are still green, the weather is less hot, the hiking trail is not dusty and still less climber

Cons: The weather is still bit rainy, and it usually rains during the day between 12.00 pm to 4 pm. The hiking trail on certain part is slippery where you should extra carefully.

June to September

Temperature: Daytime 26°C–34°C, Nighttime 8 to 10°C

Pros: The weather is clear and sunny. Glorious views of mountains

Cons: The hiking trail is dusty. Visitors are very crowded so when climbing to the top, it would be traffic jam on the way up to the top

October to November

Temperature: Daytime 22°C–31°C, Nighttime 6 to 8°C

Pros: The weather is sometimes sunny and sometimes bit rainy

Cons: The hiking trail is not dusty. Visitors are less crowded

December

Temperature: Daytime 19°C–29°C, Nighttime 6 to 8°C

Pros: The trees and meadow still green, the weather is humid, the hiking trail is not dusty and a smaller number of visitors

Cons: It is rainy season, and it usually rains during the day between 10.00 pm to 6 pm, sometimes its rainy starts from the morning until evening. Most of the hiking trail is slippery where you should extra carefully.