Tucked away in the Andaman Sea, Koh Kradan is a hidden gem of southern Thailand—an idyllic island known for its crystal-clear turquoise waters, powdery white sand, and relaxed atmosphere. Far less developed than its neighbors, Koh Kradan is perfect for couples, snorkelers, and those seeking a tranquil tropical escape. To make the most of your trip, understanding the island’s weather and seasons is essential.

Koh Kradan enjoys a tropical monsoon climate, with warm temperatures and distinct wet and dry seasons. Year-round temperatures average between 25°C to 32°C (77°F to 90°F).

Two Main Seasons in Koh Kradan:

• Dry Season (November to April)

• Rainy/Monsoon Season (May to October)

Best Time to Visit Koh Kradan: November to April

Why Go:

• Sunny skies and calm seas

• Excellent snorkeling visibility

• Ideal conditions for kayaking, swimming, and beach picnics

Peak Months: December to March

• Warm weather with minimal rain

• Resorts and transport fully operational

• Perfect for honeymooners and beach lovers

Rainy Season in Koh Kradan (May to October)

What to Expect:

• Heavy rainfall, especially in the afternoons and evenings

• Limited ferry access and many resorts close

• Risk of rough seas and boat cancellations

Pros:

• Fewer tourists and lower accommodation rates

• Lush green island landscapes

Cons:

• Most services and accommodations shut down between June and September

Monthly Highlights in Koh Kradan :

• November: Reopening of resorts, fresh island vibe

• January–February: Calmest sea conditions, best for snorkeling and kayaking

• March–April: Warmer days and good underwater visibility

• May: Early showers but still travelable with lighter crowds

Travel Tips

• Book early during high season, especially December to February

• Pack light layers and sun protection year-round

• Access via ferry from Trang or nearby islands like Koh Mook and Koh Lanta (service mostly active November–April)

Koh Kradan shines brightest in the dry season, offering postcard-perfect beaches and turquoise lagoons. For those willing to embrace off-season travel, the island's rainy months can provide a more intimate and quiet experience—just be prepared for the elements. Whether you seek a romantic escape or a snorkeling haven, timing your visit right ensures an unforgettable stay on this Thai island paradise.