Thailand’s tropical climate is generally split into three seasons: hot, rainy, and cool. The cool season (November–February) typically offers the most comfortable temperatures and less humidity, making it peak tourist time. Major cultural events like Loy Krathong often fall in November, adding a festive vibe. March–May can be extremely hot, especially inland, while June–October brings monsoon rains—although downpours often come in quick bursts, leaving plenty of sunshine. Southern Thailand experiences different monsoon patterns on the Andaman Sea vs. Gulf of Thailand side, so check local forecasts if you plan island-hopping. Overall, November to February is a sweet spot for travelers looking for moderate temperatures and mostly dry days, though each part of the country has its own microclimates worth considering.
January: Cool season, popular for beaches and city sightseeing.
February: Still mild, fewer crowds after peak holiday period.
March: Hotter days, central plains can be quite warm.
April: Peak heat, Songkran festival (Thai New Year) in mid-April.
May: Hot and humid, onset of rainy season in some regions.
June: Occasional showers, but still many sunny spells.
July: Rainy season in most areas, lush greenery appears.
August: Continued monsoon, quieter island resorts, deals available.
September: Peak rainfall in many regions, strong storms possible.
October: Rain gradually subsides, cooler breezes emerging.
November: Start of dry season, ideal weather for travel.
December: Mild temps, holiday crowds, great for beach relaxation.