Thailand Weather in March: Overview

March in Thailand is a transitional month. The North and Northeast enjoy warm, dry days perfect for outdoor adventures, while Central Thailand starts heating up. The South sees a mix of sunshine and occasional showers, with the Andaman coast basking in its peak beach weather. Air quality can vary, especially in the North due to seasonal agricultural burning, so we’ll help you navigate that too. 

Here’s what to expect across Thailand’s key regions in March:

• North Thailand (e.g., Chiang Mai, Chiang Rai): Warm days (25-34°C), low humidity, and minimal rain, though haze from burning may affect air quality.
• North East Thailand (e.g., Udon Thani, Khon Kaen): Dry and warm (26-35°C), with clear skies and comfortable evenings.
• Central Thailand (e.g., Bangkok, Ayutthaya): Hot (28-36°C) with rising humidity, but still mostly dry.
• South Thailand (e.g., Phuket, Krabi, Koh Samui): Warm (27-33°C) with sunny skies on the Andaman side; the Gulf coast sees occasional showers.

Does it Rain in Thailand in March?

March is one of Thailand’s driest months, making it ideal for travelers who prefer sunshine over soggy shoes. Rainfall is minimal across most regions, though the South’s Gulf coast (like Koh Samui) may see a few brief showers.

Here’s a breakdown of average rainy days and rainfall per region in Thailand for March:

• North Thailand (Chiang Mai): 2 rainy days, 10 mm rainfall
• North East Thailand (Udon Thani): 1 rainy day, 5 mm rainfall
• Central Thailand (Bangkok): 2 rainy days, 20 mm rainfall
• South Thailand (Phuket): 4 rainy days, 30 mm rainfall
• South Thailand (Koh Samui): 6 rainy days, 50 mm rainfall

Is it Hot in Thailand in March?

March brings the heat, especially in Central and Southern Thailand, while the North stays pleasantly warm. Nighttime temps remain comfortable, but daytime highs can climb.

Here’s a snapshot of typical min and max temperatures per region in Thailand in March:

• North Thailand (Chiang Mai): Min 18°C, Max 34°C
• North East Thailand (Udon Thani): Min 20°C, Max 35°C
• Central Thailand (Bangkok): Min 25°C, Max 36°C
• South Thailand (Phuket, Koh Samui): Min 24°C, Max 33°C

Best Places to Visit in Thailand in March

March’s warm, dry weather sets the stage for unforgettable Thai adventures. From stunning beaches to remote island escapes, here are our top picks for where to go and what to do, recommended by our own LUMA experts. 

Krabi: Top Recommendation for March by Clara

Clara is the Travel Business Development Manager at LUMA and a Well-Seasoned Traveler

Why Visit: March marks the start of the hot season, but Krabi’s beaches and limestone cliffs are less crowded, offering a perfect mix of relaxation and exploration.

Recommended Activity in Koh Samui in March, by Clara: Explore stunning limestone cliffs and take a longtail boat tour to nearby islands like Railay Beach or the Phi Phi Islands.

Insider Tip from Clara: Pack light, breathable clothing and water shoes for rocky shores. Book your boat tour early to snag a spot—this is peak season for the Andaman coast.

Koh Samui: 2nd Recommendation for March by Clara

Why Visit: This Gulf coast gem shines in March with tropical island vibes and fewer crowds than the Andaman side, making it ideal for beach lovers.

Recommended Activity in Koh Samui in March, by Clara: Indulge in beach hopping (try Chaweng or Lamai Beach) and water sports like kayaking or paddleboarding.

Koh Kood, Trat: Top Recommendation for March by Petch

Petch is the Partner Development Manager at LUMA and a Travel Enthusiast Who Spent More Than 10 Years in the Travel & Hospitality Industry.

Why Visit: A remote paradise off the beaten path, Koh Kood offers a peaceful escape from bustling cities, with warm weather and minimal rain in March.

Recommended Activities in Koh Kood in March, by Petch:

• Beach Hopping: Rent a motorbike or take a local taxi to visit Ao Tapao Beach, Bang Bao Beach, or Khlong Chao Beach—perfect for scenic rides and sunset views.
• Boat Excursions: Snorkel around nearby islets to spot marine life or join a squid fishing tour at night.
• Seafood: Savor fresh catches at local restaurants or markets—don’t miss the grilled prawns!
• Khlong Chao Waterfall: Swim at this three-tiered waterfall, a year-round highlight (though expect less water in summer).

Insider Tip from Petch: Plan a 2-3 night stay to make the 4-5 hour land trip from Bangkok plus ferry worthwhile. Pack mosquito repellent for evening outings and comfy shoes for waterfall trails.