Koh Tao Weather Forecast

7-day forecast, current conditions, and travel weather tips for Koh Tao, Thailand.

When to Visit Koh Tao

Best Months

March to September

Avoid If Possible

October to December (Gulf monsoon — poor visibility)

Best diving visibility is March-September. October storms can strand travelers — always have flexible dates when visiting small islands.

Weather Hazards in Koh Tao

Diving visibility drops significantly during monsoon
Ferry cancellations can strand you for days
Power outages during storms

What to Pack for Koh Tao

Underwater camera
Motion sickness medication for rough crossings
Power bank

Seasonal Weather in Koh Tao

Hot Season (March - May)

The hottest months with temperatures often exceeding 38°C in central Thailand. Humidity is high and afternoon thunderstorms are possible.

Rainy Season (June - October)

Monsoon season brings daily downpours, usually in the afternoon. Mornings are often sunny. Flooding possible in low-lying areas.

Cool Season (November - February)

The most comfortable season for travel. Temperatures are pleasant (20-30°C) with low humidity. Peak tourist season.

Need help in Koh Tao?

Tourist Police: 1155 (24/7, English) | Emergency: 1669

Frequently Asked Questions

What is the best time to visit Koh Tao?

The best time to visit Koh Tao is March to September. Avoid October to December (Gulf monsoon — poor visibility) if possible.

What should I pack for Koh Tao?

Essential items for Koh Tao: Underwater camera, Motion sickness medication for rough crossings, Power bank. Adjust based on the season you're visiting.

Does it rain a lot in Koh Tao?

During monsoon season, Koh Tao sees daily rain, usually in short afternoon bursts lasting 1-2 hours. Mornings are typically sunny. Annual rainfall varies by coast — check the monsoon calendar for your travel dates.

How hot does Koh Tao get?

During the hot season (March-May), Koh Tao can reach 35-40°C with high humidity. The "feels like" temperature often exceeds 40°C. The cool season (Nov-Feb) is much more comfortable at 20-30°C.

Weather in Other Destinations

Weather

Bangkok Weather Forecast

7-day forecast and travel weather tips for Bangkok

Read guide Weather

Phuket Weather Forecast

7-day forecast and travel weather tips for Phuket

Read guide Weather

Chiang Mai Weather Forecast

7-day forecast and travel weather tips for Chiang Mai

Read guide Weather

Koh Samui Weather Forecast

7-day forecast and travel weather tips for Koh Samui

Read guide Weather

Pattaya Weather Forecast

7-day forecast and travel weather tips for Pattaya

Read guide Weather

Krabi Weather Forecast

7-day forecast and travel weather tips for Krabi

Read guide

Seasonal Weather in Koh Tao

Hot Season (March - May)

The hottest months with temperatures often exceeding 38°C in central Thailand. Humidity is high and afternoon thunderstorms are possible.

Rainy Season (June - October)

Monsoon season brings daily downpours, usually in the afternoon. Mornings are often sunny. Flooding possible in low-lying areas.

Cool Season (November - February)

The most comfortable season for travel. Temperatures are pleasant (20-30°C) with low humidity. Peak tourist season.

Frequently Asked Questions

What is the best time to visit Koh Tao?

The best time to visit Koh Tao is March to September. Avoid October to December (Gulf monsoon — poor visibility) if possible.

What should I pack for Koh Tao?

Essential items for Koh Tao: Underwater camera, Motion sickness medication for rough crossings, Power bank. Adjust based on the season you're visiting.

Does it rain a lot in Koh Tao?

How hot does Koh Tao get?

During the hot season (March-May), Koh Tao can reach 35-40°C with high humidity. The "feels like" temperature often exceeds 40°C. The cool season (Nov-Feb) is much more comfortable at 20-30°C.