When & whereLast reviewed
Best time to visit Thailand
November to February is cool and dry in Bangkok, and the peak season. March to May is often above 95°F. Rain runs June to October, with short afternoon storms in the city. Thailand is two coasts: the Andaman side (Phuket, Krabi) is wet while the Gulf (Samui) can be drier, and the reverse later in the year. Three days in Bangkok is a complete city trip. Pick the coast from the season, then open the Bangkok map.
The city window is cool and dry
Bangkok writes November to February as cool and dry, and the peak season. Temples at 8:30am are still hot. They are survivable. March to May is very hot, often above 95°F, and the Grand Palace at noon is a mistake. June to October is rain in short, heavy bursts, usually after lunch. The BTS and the river boats still beat any taxi. Three days covers the temples, the markets, and two dinners. Five adds Ayutthaya.
Shoulders and knees covered at Wat Phra Kaew; the dress code is enforced. Go at opening. Wat Pho is next door. Chatuchak is weekends only. Sleep in Sukhumvit (Asok to Thong Lo) for the BTS and hotels, or Riverside if the temples are the point. How many things per day still holds: one temple cluster in the morning, a boat or a market, a long dinner.
Two coasts, not one monsoon
A Thailand beach week is not the Bangkok calendar. The Andaman coast — Phuket, Krabi, the west — takes the southwest monsoon from roughly May to October. November to April is the dry window there. The Gulf coast — Samui, Phangan — often runs the other way: more rain from October into early winter, and a usable stretch in the northern-hemisphere summer when the Andaman is wet.
Arriv maps Bangkok, not Phuket. If the dates you have are July, the Gulf is the coast that is usually drier, and Bangkok is still a three-day city in the rain. If the dates are January, the Andaman is the classic beach week, and Bangkok is peak-season hot-but-dry. Do not pick an island from a postcard and then discover the month. Bali is a different dry season (April–October) if the trip could be either country.
- November–February: Bangkok’s cool-dry peak. Book the Grand Palace morning.
- March–May: heat. Temples at opening, afternoons indoors.
- June–October: city storms after lunch. Andaman coast is the wet one.
- Gulf (Samui) is often the drier beach in northern-hemisphere summer.
What three days in Bangkok holds
Day one: river and old town, Grand Palace at opening, Wat Pho, orange-flag boat. Day two: Chatuchak if it is a weekend, or Ayutthaya if you have a fifth day; otherwise a neighborhood and a rooftop that you do not need. Day three: one more temple or a market, fly or take the train onward. Traffic is the enemy. Plan around the BTS, the MRT, and the river.
A first Thailand trip that tries Bangkok plus two islands in seven days spends the week in terminals. Bangkok plus one coast is the version that holds. A multi-city trip is the same math as Europe: each extra pin costs a day. Here the pin is a flight to an island, not a train.
A sample week in 2026
Second week of November 2026: three nights Bangkok, temples in the morning, then a flight to the Andaman if the trip wants a beach. Book the Bangkok hotel and the palace morning before the island. If the week you have is August, keep Bangkok as the city, put storms in the afternoon plan, and look at the Gulf rather than Phuket for the beach days.
The best time of year essay is the monsoon split in one paragraph. This page is Thailand’s two coasts and a city that is always hot. Japan is the other Asia calendar if the dates you have are March blossoms or November maple and you would rather be there.
| Window | Bangkok | Beaches |
|---|---|---|
| November–February | Cool-dry peak | Andaman (Phuket, Krabi) dry |
| March–May | Very hot, often 95°F+ | Andaman still dry, heat everywhere |
| June–October | Afternoon storms | Andaman wet; Gulf often the drier coast |
| October–December | Rain tapering | Samui’s wetter stretch; check the coast |