Your charter, step by step — from confirmation to check-out

Sailing Season in the Gulf of Thailand

The official sailing season in our part of Thailand runs from October to April, driven by the northeast monsoon. What the brochures don't say is that the season has a personality — and it changes month by month in ways that matter for passage planning.

October and November bring the most reliable wind: 15–25 knots from the northeast, building seas on the windward side of the islands, glassy water in the lee. December through February is the sweet spot — consistent 10–18 knots, settled weather, warm nights, excellent visibility. March starts to see the wind die back, April can be frustratingly light.

The southwest monsoon (May through September) is where the story gets interesting — and where our two bases make a difference that no other charter company in the region can offer.

When the southwest monsoon arrives, the Gulf of Thailand splits in two. Koh Chang and the eastern gulf go into their quiet season — manageable, but wetter and windier from the south. Koh Samui, on the other side of the Thai peninsula, does the opposite: it enters its best sailing window. The southwest monsoon that batters Phuket and the Andaman Sea is blocked by the Nakhon Si Thammarat mountain range running down the spine of the peninsula. The result is that Koh Samui and the Samui Archipelago — Koh Phangan, Koh Tao, Ang Thong Marine Park — enjoy settled skies, warm consistent wind and calm seas from May through September, precisely when every other sailing destination in the region is shutting down.

This is not a loophole or a lucky accident of geography. It is the reason we opened our second base at Koh Samui. If you want to sail Thailand in June, July or August — and sail in proper conditions, not in spite of the weather — Samui is the only answer in this part of the world. Many of our clients now plan their trip specifically around this: Koh Chang in January, Koh Samui in July, same boats, same team, entirely different world.


Supplemental documents

Sample itineraries Koh Chang

Base Information and FAQ

Provisioning Order — AQUA Charters

Pre-charter service

Provisioning Order

Select your quantities below and we'll have everything stocked and ready on board before you arrive — so your holiday starts the moment you step on deck.

Browse by category, set your quantities, and submit the form. You'll receive a full itemised confirmation by email, and a copy goes straight to our team. We'll do our best to source everything on your list — though please bear in mind we're based on a tropical island, and availability can vary. If anything can't be sourced, we'll let you know within 24 hours.

Already included in your charter — no need to order

Toilet paper  ·  paper towels  ·  washing-up liquid  ·  bin bags  ·  ice for drinks

Provisioning service fee ฿ 3,500
Estimated total incl. service fee
Approximate · THB
฿ 3,500

Your itemised checklist and order confirmation will be sent to your email.
A copy goes to our team at info@aqua-charters.com. We'll confirm within 24 hours.

Transfer Request — AQUA Charters
Pre-charter service

Transfer Request

We arrange transfers from Bangkok and Trat airports directly to the marina — including ferry tickets. Select your route below and we’ll confirm by WhatsApp within a few hours.

Yacht & Charter

Linking your charter helps us coordinate the transfer with your check-in schedule.

Route & vehicle
Passengers
2
Date & time
Contact & placard name

Name on the placard our driver will hold at arrivals.

We confirm all transfers via WhatsApp within a few hours · Payment on board or by bank transfer before departure