Bangkok temple rooftops
Unsplash · Mathew Schwartz

Bangkok travel guide

Bangkok is a city where the distance on the map tells you almost nothing and the rail map tells you almost everything. Two kilometres can take forty minutes in traffic, so the decision that shapes a trip here is which BTS Skytrain or MRT district you sleep in. That splits the city into two halves: the historic Rattanakosin quarter by the Chao Phraya, where the Grand Palace and the great temples are but where rail coverage thins to a single MRT stop, and the modern spine of Siam, Sukhumvit and Silom, where the trains, the malls, the restaurants and most of the hotel supply are. Layer on the season — a cool, dry, expensive window from November to February, a hot season peaking in April around the Songkran water festival, and a cheap, wet monsoon from June to October — and you have the two axes to settle before anything else.

Plan your trip, step by step

The neighborhoods at a glance

Rattanakosin (the Old City / Phra Nakhon)
Known for the royal island in the river bend — the Grand Palace and Wat Phra Kaew, Wat Pho, the National Museum, and Khao San Road at its northern edge.
Yaowarat (Chinatown)
Known for gold shops by day and one of Asia’s densest street-food streets after dark, plus the shophouse lanes of Talat Noi; MRT Wat Mangkon put it back on the rail map in 2019.
Siam & Ratchaprasong (Pathum Wan)
Known for the shopping core — Siam Paragon, MBK, CentralWorld and the Erawan Shrine — built around Siam, the interchange where the two BTS lines cross.
Sukhumvit (Asok, Phrom Phong, Thong Lo, Ekkamai)
Known for the long international spine along the BTS Sukhumvit Line — the deepest hotel supply, the restaurant scene, the malls and the late-night bars.
Silom & Sathorn (Bang Rak)
Known for the business district by day, rooftop bars and Patpong by night, with Lumphini Park on one side and the river piers a short ride down the Silom Line.
Riverside & Charoen Krung (Khlong San / Talat Noi)
Known for the grand river hotels, Iconsiam and Asiatique, and the oldest paved street in Bangkok, now a slow-burning gallery-and-coffee district.

Deciding where to base yourself? The where-to-stay guide turns these areas into a lodging decision.

When to go — month by month

Average daytime high (bars) and rainy days per month, from 5-year climate normals. Greener months are the most comfortable to visit.

32°
J
3d
33°
F
6d
33°
M
9d
34°
A
12d
34°
M
20d
33°
J
24d
32°
J
27d
32°
A
27d
31°
S
28d
31°
O
22d
31°
N
11d
31°
D
4d
great good off-peak“d” = rainy days

Destinations with a similar climate

Like Bangkok’s weather? These places have the closest year-round climate in our data — tap through for each one’s best time to visit.

Know before you go

Currency
Thai baht (฿ / THB). Malls, hotels, chain restaurants and most convenience stores take cards and PromptPay QR, but street food, markets, boats and motorbike taxis are still cash. Thai bank ATMs add their own flat foreign-card fee per withdrawal on top of whatever your own bank charges, and it is high enough to matter — take out larger amounts less often rather than topping up daily.
Language
Thai, written in its own script. English is fine in hotels, malls and tourist areas and thin everywhere else — taxi drivers in particular. Having your destination in Thai script, or simply using Grab or Bolt where you type the address in, removes most of the friction.
From the airport
Bangkok has two, on opposite sides of the city, so check which one your ticket actually uses. Suvarnabhumi (BKK) sits east of the centre: the Airport Rail Link reaches Phaya Thai on the BTS in around half an hour, and costs a small fraction of a metered public taxi, which lands in the several-hundred-baht range once the airport surcharge and expressway tolls are added. Don Mueang (DMK) is north and handles most low-cost carriers; the SRT Red Line and airport buses connect it to the city. Allow real time if you have to transfer between the two.
Getting around
The BTS Skytrain (Sukhumvit and Silom lines, plus the short Gold Line to Iconsiam) and the MRT (Blue and Purple lines) cover the modern city, with the Yellow and Pink monorails running out to the suburbs; Chao Phraya express boats and the Khlong Saen Saep canal boats cover the water. Grab and Bolt are the reliable way to hail a car. There is no single card that works on everything — the BTS uses the Rabbit card, the MRT its own card, and contactless bank cards are accepted on more lines each year.
Best time
November–February is the cool, dry season and the reason hotel rates peak then. March–May is the hot season, with April the hottest month and the Songkran water festival on 13–15 April turning parts of the city into a three-day water fight. June–October is the southwest monsoon: heavy afternoon and evening downpours rather than all-day drizzle, September the wettest month, and the cheapest rooms of the year. A separate PM2.5 haze season overlaps the cool months, roughly December to March.
Before you fly & on the ground
Foreign arrivals must submit the free online Thailand Digital Arrival Card (TDAC) before landing — do it on the official immigration site, not a paid copycat. Shoulders and knees must be covered at the Grand Palace and major temples. Never treat the monarchy casually: lèse-majesté is a serious criminal offence in Thailand. E-cigarettes and vaping devices are illegal to import or possess, and being caught with one is a genuine legal problem, not a formality.

For the best months to visit and a day-by-day plan, see Bangkok in 3 days.

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