Thailand weather in March
March opens Thailand’s hot season. Daytime averages climb from the high-20s to mid-30s °C (high-70s to mid-90s °F). Rain is still scarce for most regions, seas are generally calm, and crowd levels ease after the winter peak—though heat and humidity make smart pacing essential.
1 | Quick-Look Table
| Region | Avg High °C | Rainfall (mm) | Typical Conditions | Travel Notes |
|---|---|---|---|---|
| Bangkok & Central | 33 – 35 | ≤ 20 | Hot, humid, mostly dry | Book air-conditioned rooms; plan museums midday. |
| Chiang Mai & North | 33 – 36 | ≤ 10 | Very warm; seasonal haze | Crop-burning can raise AQI; consider coastal alternatives. |
| Isan / Mekong | 34 – 36 | ≤ 10 | Dry heat | Shade & hydration breaks are key. |
| Gulf Islands (Samui / Phangan / Tao) | 31 – 33 | 30 – 60 | Sunny with brief showers | Good snorkelling; seas generally calm. |
| Koh Chang & East | 31 – 33 | 20 – 40 | Plenty of sun | Great beach window before late-year rains. |
| Phuket / Krabi (Andaman) | 32 – 34 | ≤ 30 | Dry; crystal seas | Prime boating & dive conditions. |
2 | March Highlights
- Heat & humidity — Expect “feels-like” a few degrees above actual temps; pace sightseeing early morning and evening.
- Northern haze — Field-burning can reduce visibility and irritate eyes/throat; check AQI and keep indoor options handy.
- Beach conditions — Both coasts shine: Andaman is postcard-calm; Gulf sees short showers then sun.
- Fewer crowds — Shoulder-season pricing begins outside festival weeks; more last-minute availability.
3 | Packing Essentials
- Light, breathable clothing + sunhat & reef-safe sunscreen
- Electrolyte tabs; refillable water bottle
- Room request: air-con guaranteed; pool access if possible
- Light mask or eyedrops if visiting the North during haze
4 | Frequently Asked Questions (FAQ)
Q 1. Is March a good month to visit Thailand for weather?
Yes—March is mostly dry nationwide and seas are calm, but it’s hot. Sightsee early, break midday, and choose air-conditioned stays.
Q 2. How bad is the smoke/haze in Northern Thailand in March?
It varies year to year. During crop-burning the AQI can spike and reduce views around Chiang Mai/Chiang Rai. Sensitive travellers should consider beach bases or keep indoor days flexible.
Q 3. Which Thailand beaches are best in March?
Phuket & Krabi (Andaman) are at their clearest for boating and diving, while Koh Chang and the Samui–Phangan–Tao trio enjoy long sunny spells with only brief showers.
Q 4. Is March less crowded and cheaper than January–February?
Generally yes. After the winter peak, hotel rates ease and availability improves—except around special events or early-April Songkran weeks.
Q 5. How should I plan city days in Bangkok in March heat?
Cluster outdoor sites at dawn/late afternoon, use river boats/skytrain to avoid heat, and slot museums, malls or cafés for midday.
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