Upper Thailand seasonal context

Cooler period roughly mid-October to mid-February; heat before the rains; rainy season roughly mid-May to mid-October. Road closures, smoke and storms need separate current observations.

Monthly context

These labels are qualitative. They are not numeric climate normals, a weather forecast, a safety rating or a prediction of road openings.

Thai Meteorological Department seasons. Source reviewed 2026-11-12.

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