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Wondering when to visit Thailand to avoid the rain? Here's everything you need to know about Thailand's rainy season, including travel tips, regional differences, and what to expect. See our interactive global rain season map for more destinations.

When is the Rainy Season in Thailand?

Planning a trip to Thailand? Understanding the rainy season (also known as the monsoon) is crucial for making the most of your visit. Thailand's climate varies by region, but the rainy season generally runs from May to October across most of the country.

Best Time to Visit Thailand

The best time to visit most of Thailand is from November to early April, when rainfall is lowest and the weather is most pleasant. For the Gulf islands (Koh Samui, Koh Phangan), January to March is ideal.

Rainy Season Months by Region

Region	Rainy Season	Best Months to Visit
Bangkok/Central	May – October	Nov – Mar
North (Chiang Mai)	May – October	Nov – Feb
Andaman Coast (Phuket)	May – October	Dec – Mar
Gulf (Koh Samui)	Oct – Dec	Jan – Mar

What to Expect During the Rainy Season

Sudden, intense rain showers (usually in the afternoon or evening)
High humidity and lush green landscapes
Occasional flooding in low-lying areas
Fewer tourists and lower prices
Some outdoor activities may be limited

For more details, check our interactive rainfall map.

What to Pack for Thailand's Rainy Season

Lightweight rain jacket or poncho
Quick-dry clothing
Waterproof shoes or sandals
Travel umbrella
Dry bags for electronics
Insect repellent

Interactive Rain Season Map for Thailand

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Frequently Asked Questions

How long does the rainy season last in Thailand?

In most regions, the rainy season lasts from May to October. On the Gulf islands, it can extend from October to December.

Is it safe to travel during the rainy season?

Yes, but be aware of possible flooding and slippery roads. Most tourist areas remain open.

Are there any festivals during the rainy season?

Yes! The famous Loy Krathong festival usually takes place in November, at the end of the rainy season.

What is the weather like during the rainy season?

Expect hot, humid days with brief but heavy rain showers, mostly in the late afternoon or evening.

Summary

The rainy season in Thailand is from May to October (or October to December on the Gulf islands). With the right preparation, you can enjoy a unique and beautiful side of Thailand, even during the wet season.