Monthly Travel Dossier · August 2026/2027

Visiting Koh Samui in August: Crowds, Weather & Prices

Planning a trip to Koh Samui, Thailand in August? Here is the empirical 365-day intelligence covering thermal comfort, landmark queues, and accommodation rates.

Direct Answer Summary · Koh Samui in August TripTiming Index: 60 / 100 (MODERATE)
Overall Suitability Score
60 / 100 (moderate)
Expected Climate & Rain
29°C · 28% Rain
Feels like 36°C · High Humid Heat
Tourist Density & Queues
Heavy Visitor Congestion
Space Score: 35/100
Hotel Room Rate Level
Elevated Seasonal Rates
Estimated ADR: ~$120/night
💡 Timing Arbitrage Insight: August in Koh Samui experiences seasonal friction (Index: 60/100). If your dates are flexible, shifting your trip to September provides a +15 point increase in overall travel quality (75/100) with milder conditions and lower queues.
Open Interactive 365-Day Calendar for August → Book August Stays ↗ Check August Flights ↗

August 5-Pillar Intelligence Breakdown

TripTiming evaluates 5 independent dimensions for every day in August. Here is how Koh Samui scores across all pillars:

Tranquility & Crowds (30%)
35/100
Heavy Visitor Congestion
Climate Comfort (30%)
85/100
29°C · 28% Rain
Urban Vitality (15%)
73/100
Cultural & Dining Pulse
Lodging Economics (15%)
35/100
Elevated Seasonal Rates
Safety & Municipal (10%)
71.5/100
Standard Municipal Safety

How August Compares to All 12 Months in Koh Samui

Compare August against other seasons to identify the ideal trade-off between price, weather, and tranquility:

Month TripTiming Index Tier Daytime Temp Rain % Crowds Room Rates Action
January 72 / 100 favorable 27°C 18% Heavy Visitor Congestion Standard Room Rates View →
February 68 / 100 favorable 28°C 10% Heavy Visitor Congestion Standard Room Rates View →
March 68 / 100 favorable 29°C 12% Heavy Visitor Congestion Below-Average Rates View →
April 71 / 100 favorable 30°C 18% Moderate Footfall Standard Room Rates View →
May 72 / 100 favorable 30°C 30% Moderate Footfall Below-Average Rates View →
June 72 / 100 favorable 29°C 28% Moderate Footfall Below-Average Rates View →
July 67 / 100 favorable 29°C 29% Moderate Footfall Standard Room Rates View →
👉 August (This Guide) 60 / 100 moderate 29°C 28% Heavy Visitor Congestion Elevated Seasonal Rates Current
September 75 / 100 favorable 28°C 34% Moderate Footfall Below-Average Rates View →
October 67 / 100 favorable 28°C 48% Moderate Footfall Below-Average Rates View →
November 59 / 100 moderate 27°C 62% Moderate Footfall Below-Average Rates View →
December 68 / 100 favorable 27°C 38% Moderate Footfall Standard Room Rates View →

Landmark Crowding in Koh Samui (August)

Avoid peak congestion bottlenecks at Koh Samui's most frequented sights during your visit:

Big Buddha Temple (Wat Phra Yai)

monument
Peak Hours: 10:00 - 15:00 · Congestion: 1.4x

💡 Pro-Tip: 12-meter golden statue on a rocky islet; dress respectfully covering knees and shoulders.

Ang Thong National Marine Park Day Trip

nature
Peak Hours: 10:30 - 15:00 · Congestion: 1.4x

💡 Pro-Tip: 42 limestone islands; climb the steep stairs to the Emerald Lagoon (Talay Nai).

Chaweng Beach & Beach Clubs

nature
Peak Hours: 14:00 - 19:00 · Congestion: 1.6x

💡 Pro-Tip: Long crescent of powdery sand; North Chaweng has calmer shallow waters.

Fisherman’s Village Bophut & Night Market

district
Peak Hours: 18:00 - 22:00 · Congestion: 1.5x

💡 Pro-Tip: Friday night walking street with wooden shophouses, street food, and fire dancers.

Grandfather and Grandmother Rocks (Hin Ta Hin Yai)

nature
Peak Hours: 11:00 - 16:00 · Congestion: 1.4x

💡 Pro-Tip: Unusual coastal rock formations; try the traditional sweet coconut caramel (Galamae) nearby.

Explore All Months in Koh Samui

January
72/100
February
68/100
March
68/100
April
71/100
May
72/100
June
72/100
July
67/100
August
60/100
September
75/100
October
67/100
November
59/100
December
68/100