Koh Samui Weather by Month | 2026 Guide

Bjorn isak Benediktsson • June 18, 2025

Koh Samui Weather: Best Time to Visit (2026 Guide)

Planning a trip to Koh Samui? Understanding the island’s tropical weather can help you choose the best time for beaches, island tours, outdoor activities, and sightseeing.

Here’s a month-by-month guide to Koh Samui weather in 2026, including the dry season, rainy season, temperatures, and what to expect throughout the year.

Koh Samui weather by month 2026 infographic showing dry, hot, green, and rainy seasons with monthly temperatures.

More in detail


Detailed Koh Samui monthly weather guide 2026 with seasonal notes and travel tips for each month.

Ready to Explore Koh Samui?

Good weather makes exploring Koh Samui even better. From island-hopping adventures and snorkeling trips to beaches, viewpoints, temples, and unforgettable day tours, there’s plenty to discover across the island.
Explore Koh Samui →


Make sure you are prepared

Discover Everything Koh Samui Has to Offer


Koh Samui is far more than just beautiful beaches, it’s a complete island experience. From world-class restaurants and local street food to exciting tours, vibrant nightlife, peaceful retreats, and unique cultural attractions, Samui has something for every traveler.

Whether you’re here to relax, explore, invest, or even relocate, you’ll find trusted businesses, hand-picked experiences, and insider tips right here on My Visit Thailand.

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