Climate in Thailand — When to Visit & Weather Guide
We cover 7 destinations in Thailand, with subtropical, tropical climates. Each guide below has month-by-month temperatures, rainfall and the best time to go — all calculated from four years of historical weather data.
Destinations in Thailand
Thailand climate at a glance
| Destination | Climate | Hottest month | Wettest month | Best time |
|---|---|---|---|---|
| Bangkok | Tropical | April (33.5°C) | September (346.9mm) | All year |
| Chiang Mai | Subtropical | April (34.8°C) | September (424.5mm) | All year |
| Hua Hin | Tropical | May (33.6°C) | October (264.9mm) | All year |
| Koh Samui | Tropical | April (31.1°C) | November (323.1mm) | All year |
| Krabi | Tropical | March (33.9°C) | October (323.9mm) | All year |
| Pattaya | Tropical | April (32.4°C) | September (324.3mm) | All year |
| Phuket | Tropical | March (32.1°C) | October (319.8mm) | All year |
Planning a trip to Thailand? Get the full country picture — currency, language, dialling codes and facts at 247CountryInfo → and check clothing sizes in Thailand at 247Sizing before you shop.
Frequently Asked Questions
When is the best time to visit Thailand?
Bangkok: All year. Phuket: All year. Chiang Mai: All year. Koh Samui: All year.
What is the climate like in Thailand?
Destinations we cover in Thailand have subtropical, tropical climates — see each destination's annual climate page for the full breakdown.
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Find out exactly what to pack for Thailand at 247PackingList, with ready-made checklists for every destination. And check clothing sizes in Thailand at 247Sizing before you shop.
Planning your Thailand trip?
For currency, language and country facts, see the Thailand guide at 247CountryInfo.
Thailand travel accessories
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.