Komodo & Flores
Intermediate
Best conditions around November 9
Dramatic Indonesian islands, dragons, fast currents.
Best time to sail
Best time to sail in Indonesia
The best time to sail in Indonesia is March to November, with peak conditions in July and August.
That verdict comes from 1991–2020 climate normals — wind, rain, sunshine, and air temperature — scored week by week for charter conditions across 2 sailing areas.
Sailing conditions in Indonesia, month by month
Mean weekly values across our sailing areas in Indonesia. The sail score weighs wind, rain, sun, and temperature — and discounts tropical-storm season where one applies.
Temperature (°C)
- Air
- Water
Wind (kn)
Rain (mm/day)
Sun (h/day)
| Month | Sail score | Wind (kn) | Rain (mm/day) | Sun (h/day) | Temp (°C) | Water (°C) |
|---|---|---|---|---|---|---|
| January * | Fair | 7 | 7.1 | 12 | 26 | 29 |
| February * | Fair | 7 | 6.9 | 12 | 26 | 29 |
| March * | Good | 6 | 6.7 | 12 | 27 | 30 |
| April * | Excellent | 6 | 6.9 | 12 | 27 | 30 |
| May | Excellent | 7 | 5.9 | 12 | 27 | 30 |
| June | Excellent | 8 | 4.8 | 12 | 26 | 29 |
| July | Excellent | 9 | 4 | 12 | 26 | 29 |
| August | Excellent | 9 | 3.3 | 12 | 26 | 29 |
| September | Excellent | 8 | 4.1 | 12 | 26 | 29 |
| October | Excellent | 6 | 4.3 | 12 | 27 | 30 |
| November * | Good | 6 | 5.6 | 12 | 27 | 30 |
| December * | Fair | 6 | 6.1 | 12 | 27 | 30 |
Months marked * fall inside the tropical-storm season.
Tropical storm season: November to April
Parts of Indonesia sit inside a tropical-cyclone basin. Monthly climate averages smooth over rare but severe storms, so the sail score discounts the weeks from November to April. Check cancellation terms, insurance, and your operator's storm policy before booking inside this window.
Sailing areas in Indonesia
Every area below is scored individually in the interactive calendar; where we have an in-depth guide, it's linked.
Raja Ampat
Advanced
Best conditions around November 9
Bird-head of West Papua; world-class snorkeling, remote.
Frequently asked questions
When is the best time to sail in Indonesia?
March to November offers the most reliable conditions, with July and August scoring best for wind, rain, sunshine, and temperature in the 1991–2020 climate normals.
When is the cheapest time to charter in Indonesia?
The shoulder months — March and November — usually combine good sailing conditions with fewer crowds and lower charter prices than the peak in July and August.
When is tropical storm season in Indonesia?
From November to April. Climate averages hide rare but severe storms, so treat this window with care: check cancellation terms and weather routing before booking.
How warm is it in Indonesia in July?
Around 26 °C air temperature on average in July, with about 12 hours of sun a day.
How warm is the water in Indonesia in July?
Around 29 °C sea-surface temperature on average in July, based on 2023–2025 marine averages.