Peak-season weeks in Raja Ampat (November through April) book between six and nine months ahead for top-tier vessels. Shoulder weeks (May and October) need three to four months. Off-peak weeks (June through September) often have last-minute availability and meaningful discounts. A few specific windows – manta migration, full-moon coral spawning, Christmas, New Year, Chinese New Year – command premium pricing and book the furthest out. This guide maps the entire 2026 charter calendar week by week so you know exactly when to start your booking conversation.
The Peak Window: November through April
Peak season for Raja Ampat runs from late October through mid-April. Sea conditions are calm, visibility on most reefs sits between 25 and 40 metres, and the southerly wind that affects some areas during the dry season has settled. This is the window when Lamima, Dunia Baru, Aman I, Tiger Blue, and the rest of the top-tier fleet sell out earliest.
For a Christmas or New Year week on a vessel of this calibre, plan to book in March or April of the prior year – eight to nine months ahead. For non-holiday peak weeks in December, January, February, or March, plan to book in June or July of the prior year – five to six months ahead. Top vessels sometimes sell out for the entire December-February window by August. Current charter pricing reflects these seasonal patterns.
The Shoulder Window: May and October
May and October bridge between peak and off-peak. Conditions are still excellent, prices drop 15-20 percent from peak rates, and crowds at the popular dive sites thin out considerably. Manta sightings remain strong through May. The first major rains usually appear in October but rarely affect more than two or three days of any seven-night charter.
Shoulder weeks book three to four months ahead on top-tier vessels and one to two months on mid-tier vessels. May is often quieter than October because more charter operators position vessels in Raja Ampat from late September onward, increasing supply.
The Off-Peak Window: June through September
June through September is the dry-season window in Raja Ampat. Skies are mostly clear, but a strong south-east wind blows across the archipelago that can create choppy seas in exposed channels and reduce visibility on north-facing reefs to 15-20 metres. South Misool sites and east-side Wayag remain calm and divable.
This is the window for spontaneous travellers, dive enthusiasts who want lower per-person rates, and groups whose dates are constrained by work or school calendars. Vessels sometimes carry promotional rates of 25-35 percent off peak pricing during these months. Booking windows tighten to one to three months ahead on mid-tier vessels and four to eight weeks on entry-level vessels. Private yacht charter availability is best confirmed by direct quote during this period.
Manta Migration: December through February
The reef manta aggregations at Manta Sandy, Manta Ridge, and Eagle Rock peak between mid-December and late February. The plankton blooms that bring 12-25 mantas to feeding stations on a single dive coincide with the late peak season. Vessels with strong dive operations sell out their manta-week dates 9-12 months ahead.
Specific full-moon weeks during this window carry an additional small premium because the plankton blooms intensify around the lunar cycle. The new-moon weeks of January 2026 (Jan 17-24) and February 2026 (Feb 15-22) are already heavily booked at top-tier operators. Misool itineraries often include manta cleaning station visits in their seven-night routing.
Coral Spawning: November Full Moon
The annual mass coral spawning event in Raja Ampat occurs in the week following the November full moon. In 2026, the full moon falls on November 5, which means the spawning window runs roughly November 7-13. Specialist diving operators position vessels in central Dampier Strait during this week and run dedicated night dives to witness the synchronised gamete release.
This week books up earliest of any in the calendar. Underwater photographers, marine biologists, and serious dive enthusiasts hold these dates from the previous year. If the November spawn is your target, contact the booking team in January or February for the following year.
Holiday Week Premium Pricing
Five holiday windows command premium pricing of 30-50 percent above standard peak rates. Christmas week (Dec 22-29, 2026) is the highest. New Year week (Dec 29, 2026 – Jan 5, 2027) is the second highest. Chinese New Year (Feb 17-24, 2026) carries a strong premium driven by demand from Singapore, Hong Kong, and mainland Chinese clients. Easter week (April 3-10, 2026) carries a moderate premium. Eid al-Fitr week (varies, expected late March 2026) carries a smaller premium driven by Middle East and Indonesian domestic demand.
Booking lead times for these windows are 9-12 months ahead. Several top-tier vessels have a multi-year guest list for Christmas and New Year, returning the same families to the same vessel year after year.
Sample 2026 Booking Calendar
If you are planning a 2026 charter, the optimal booking window depends on your target dates. For mid-December 2026 through February 2027, contact a charter consultant in February or March 2026. For peak Christmas or New Year 2026, the booking window has already closed for top vessels – check mid-tier and entry-level options. For non-holiday peak weeks in November 2026, March 2027, or April 2027, July or August 2026 is comfortable. For shoulder weeks in May 2026 or October 2026, contact 90-120 days ahead. For off-peak June-September 2026, contact 30-60 days ahead.
Last-minute cancellations create occasional opportunities in any window. Reputable operators maintain wait lists for sold-out weeks and notify subscribers when slots open. Wayag destination availability follows the same general calendar but tends to book slightly later than Misool dates.
How to Lock In Your Dates
The standard sequence is: request a quote for your target window, confirm vessel availability, place a 30 percent deposit by wire transfer within 7 days of quote acceptance, sign the charter contract, and arrange travel insurance. The 70 percent balance is due 60 days before sailing. Some operators allow milestone payments at 90 days and 60 days for very long lead-time bookings.
If your dates are flexible, the booking team can hold a soft option on two or three vessels for up to 14 days while you finalise your group. A soft option is not legally binding but is honoured by reputable operators as long as the lead time supports it. To check current 2026 availability for your preferred weeks and vessel category, contact the Raja Ampat concierge and booking team with your guest count and three preferred date windows.