Seasons in Ko Samui & the Gulf coast

The rain runs September to January

Right now · September

It is rainy season in Ko Samui & the Gulf coast right now, and it runs September to January. The rain tends to come hard and short rather than all day, and it stays warm through it — so the thing to bring is a shell you can fold into a day bag, not a coat.

The year in Ko Samui & the Gulf coast

Pick a month to see what it means for your bag.

Going in June

Dry seasonFebruary to August

The dry half of the year, and exactly when the west coast is wet — which is the whole reason to know these two coasts apart.

What this means for your bag

  • Real sun protection

    High-factor sunscreen, a hat with a brim and sunglasses. Reef-safe sunscreen is worth buying before you go — it is expensive and hard to find at the beach.

    See the Beach & Pool Kit pack
  • Quick-dry fabrics

    Cotton takes two days to dry in this air and starts to smell before it does. Synthetics and merino wash in a sink and are wearable by morning.

    See the Summer Sun Kit pack
  • Room for humidity

    Everything stays slightly damp. Pack fewer clothes and plan to wash them, and keep anything that must stay dry in a sealed bag.

    See the Summer Sun Kit pack
  • A bottle you will actually refill

    Heat like this needs far more water than you think. A filter bottle also spares you buying a plastic bottle every two hours.

    See the Health & Wellness pack

When to go

The months with no rain, storm or haze season running:

February, March, April, May, June, July, and August

Packing for Ko Samui & the Gulf coast?

Build a packing plan around the season you are actually travelling in.

Plan my packing
Seasonal ranges are typical, not guarantees — a monsoon can arrive early and a dry season can break. Check the forecast before you seal the bag.