Season by season
Dry season (May–October)
Dry season (roughly May–October): clear mornings, golden grass on the hills and open trekking routes. July and August are busiest and coldest at night.
Wet season (November–April)
Wet season (roughly November–April): greener slopes and fewer visitors, but cloud often hides Rinjani and the hill paths get slippery. The Rinjani trails are usually closed from about January to March.
Sea, surf & trail conditions
Mornings are clearest throughout the year; cloud usually builds in the afternoon. Wind on the ridges can be strong in the dry season.
Month by month
| Month | Avg high | Avg low | Rainfall | Crowds |
|---|---|---|---|---|
| January | 26°C | 18°C | 380 mm | Quiet |
| February | 26°C | 18°C | 340 mm | Quiet |
| March | 26°C | 18°C | 300 mm | Quiet |
| April | 27°C | 18°C | 180 mm | Busy |
| May | 27°C | 17°C | 110 mm | Busy |
| June | 26°C | 16°C | 60 mm | Busy |
| July | 26°C | 15°C | 40 mm | Very busy |
| August | 26°C | 15°C | 25 mm | Very busy |
| September | 27°C | 16°C | 55 mm | Busy |
| October | 27°C | 17°C | 160 mm | Busy |
| November | 27°C | 18°C | 280 mm | Quiet |
| December | 26°C | 18°C | 360 mm | Quiet |
Temperatures and rainfall are approximate long-term averages for the area, rounded; individual years vary, and mountain villages are cooler and wetter than the coast.
Festivals & events
- Rinjani trail reopening — usually around April, after the wet-season closure; dates vary.
- Harvest seasons — garlic and vegetable harvests bring the fields to life; strawberry picking is seasonal.
- Ramadan and Eid — dates move each year; expect quieter days and busy roads around Eid.
Our advice
For sunrise photos and a summit attempt, May–June and September–October balance dry weather with fewer trekkers. Bring a warm layer whatever the month.
