
Raja Ampat yacht charter in September
September in Raja Ampat: the monsoon eases and conditions improve by month end
Quick answer
Is September a good time for a yacht charter in Raja Ampat?
September is a fair month for a Raja Ampat yacht charter, improving as it goes. The southeast monsoon weakens, rain eases and seas calm, but early September can still be windy. Late September offers quiet reefs and good fish schools, although mantas are less frequent. Most larger yachts are still in Komodo until October or November.
- Air
- 23 to 31°C
- Water
- 27 to 29°C
- Rain
- Moderate, 13 to 18 days
- Sea
- Moderate
- Visibility
- 12 to 20 m
- Crowds
- Low
Wind: Southeast winds easing
Why go in September
What September does best in Raja Ampat
- Big schools of jacks, barracuda and tuna on current sites
- Quiet reefs before the season starts
- Visibility improving through the month
- Calmer weather in the second half
Honest caveats
What to plan around
- Early September storms remain possible
- Manta sightings are much rarer than in peak season
- Most larger yachts are still in Komodo
Wildlife
Schooling fish are the highlight on current swept sites. Mantas are seen less often until they return to the cleaning stations around October.
Demand and booking
Low, with limited yacht choice. Late September can offer attractive rates for flexible travellers.
Fleet in September
Most of the larger yachts remain in Komodo through September, so Raja Ampat options are limited.
Holidays and events
Australian school holidays begin in late September. No major Indonesian holidays.
Fleet
1 yachts sail Raja Ampat in September
Private charters from US$1,900 per night for the whole yacht, crew and meals included. Availability is confirmed directly with each yacht.
Same month, other sea
Komodo in September: excellent
September in Komodo: peak season weather with fewer crowds
FAQ
Raja Ampat in September: your questions
Is September a good month for Raja Ampat?
It is a transition month. Early September can still be windy and wet, while the second half usually brings calmer seas and better visibility. It suits divers who want quiet sites and schooling fish. For the full luxury yacht experience and reliable conditions, October onwards is the better choice.
Are mantas in Raja Ampat in September?
Mantas live in Raja Ampat all year, but September is one of the less reliable months at the main cleaning stations. Encounters become more frequent from October, when the northwest winds return and plankton patterns change. The peak period runs roughly from December to March.
Is September a good time for Komodo instead?
Yes, September is one of the best months in Komodo. It is still dry and sunny, the sea is calmer than in August and crowds thin out after the European holidays. Most larger yachts are based in Labuan Bajo, so you also get the widest choice of yachts.
Sample Itineraries for Raja Ampat

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Aliikai Voyage — 12-Day Ambon to Sorong
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