Bangkok in 3 Days: Rattanakosin, Siam & Sukhumvit, and the Markets
Who this is for: First-time visitors with ~3 full days who want the great temples, the modern city that most of Bangkok actually is, and one proper market or day trip — arranged so you are not crossing the city in traffic more than once a day.
Timing assumptions: Assumes you are based somewhere on the BTS or MRT — Sukhumvit, Siam or Silom — and moving by train, boat and the occasional Grab, with arrival and departure handled separately. Day 1 is Rattanakosin and the river, ending in Chinatown. Day 2 is the modern core along the Skytrain. Day 3 is markets, with a flex option to trade it for Ayutthaya. In the hot season, front-load the outdoor hours before 11:00 and treat the malls and museums as the afternoon plan.
Getting around: Forget distance and read the rail map. The BTS Skytrain runs the Sukhumvit and Silom lines through the modern city, plus the short Gold Line across to Iconsiam; the MRT adds the Blue Line loop — which is what finally connected Chinatown at Wat Mangkon and the Old City at Sanam Chai — and the Purple Line, while the Yellow and Pink monorails run out to the suburbs. Fares are distance-based and cheap. There is no single card that covers everything: the BTS uses the Rabbit card, the MRT its own stored-value card, and contactless bank cards work on a growing number of lines. On the water, Chao Phraya express boats charge a flat ฿15–34 depending on which flag line you catch, which makes them the best-value sightseeing in the city, while the Khlong Saen Saep canal boat is a fast, unglamorous east–west shortcut past the traffic. Grab and Bolt are the reliable way to hail a car and remove the meter argument entirely; orange-vested motorbike taxis are the fastest way down a long soi. Suvarnabhumi Airport (BKK) connects to Phaya Thai by Airport Rail Link in around half an hour, for a small fraction of what the same trip costs by metered taxi once the airport surcharge and expressway tolls are added; Don Mueang (DMK), the low-cost airport on the opposite side of the city, uses the SRT Red Line and buses instead — check which airport your ticket actually says.
When to go: November–February is the cool, dry season and the reason this is Bangkok’s peak: still hot by most standards, but with low humidity, little rain and evenings you can actually spend outdoors — and hotel rates to match, sharpest over Christmas and New Year. March–May is the hot season, with April the hottest month of the year and the Songkran water festival on 13–15 April turning whole districts into a three-day water fight that is either the highlight of your trip or the reason you could not get anywhere. June–October is the southwest monsoon and the cheapest time to come: rain typically arrives as an intense late-afternoon or evening burst rather than an all-day grey, September is the wettest month, and street flooding after a heavy hour is normal rather than remarkable. One caveat that cuts across the calendar: PM2.5 haze is a genuine seasonal issue roughly between December and March, so check air quality alongside the forecast if you are sensitive to it.
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.
Daylight by month
Hours of daylight through the year in Bangkok — it swings from about 11h 12m in midwinter to 12h 48m at midsummer, which decides how many stops realistically fit in a day.
Day 1 — Rattanakosin, the river & Chinatown
Do the great temples in one geographically tight morning while it is still bearable, then follow the river south into Chinatown for dinner.
- ~2hGrand Palace & Wat Phra Kaew walk-upArrive at the 08:30 opening. Entry is ฿500, the complex closes at 16:30 but the ticket windows shut at 15:30, and the dress code is enforced at the gate — shoulders and knees covered, no exceptions.
- ~1.3hWat Pho & the reclining Buddha walk-upA ten-minute walk south. The gilded reclining Buddha fills its entire hall — you walk the length of it — and the temple is also the home of Thai traditional massage, which is the correct response to a morning spent on your feet.
- ~1.3hCross-river ferry to Wat Arun walk-upThe short ferry from Tha Tien pier costs a few baht and is the best-value boat ride in Bangkok. The porcelain-encrusted prang is worth climbing partway for the view back across the water.
- ~2.5hYaowarat (Chinatown) after dark walk-upTake an express boat or the MRT to Wat Mangkon and arrive around 18:00, when the food stalls take over the street. This is the densest eating in the city and needs no plan beyond an empty stomach.
- Route logic:
- Everything sits in one river bend, so the whole day is on foot and on water — the one day in Bangkok where you never need a car. Temples first while it is cool, Chinatown last when it comes alive.
- Getting between stops:
- The three temples are walking distance apart with one short ferry between them. MRT Sanam Chai is the Old City station; MRT Wat Mangkon drops you into Chinatown.
- Meals:
- Lunch: a simple shophouse near Wat Pho or at Tha Tien pier. Dinner: eat your way down Yaowarat Road, standing up, in instalments.
- Rain / limited mobility:
- Rainy afternoon: swap the Wat Arun climb for the National Museum (closed Mondays and Tuesdays) or Museum Siam (closed Mondays). Short on time: drop Wat Arun and take the express boat south to Sathorn instead, arriving in Silom for the evening.
Day 2 — The modern city along the Skytrain
See the Bangkok that most of Bangkok is — a Skytrain city of malls, shrines, parks and restaurants — and use air conditioning strategically through the hottest hours.
- ~1.3hJim Thompson House walk-upA cluster of traditional teak houses assembled by the American who revived the Thai silk industry and then vanished in Malaysia in 1967. A short walk from BTS National Stadium and the best small museum visit in the city.
- ~2hSiam & Ratchaprasong walk-upSiam Paragon, Siam Discovery and MBK sit within a few minutes of each other, linked to CentralWorld by elevated skywalk — the point is less the shopping than the food halls and the fact that you can cross the district without stepping into the heat.
- ~30mErawan Shrine walk-upA working Hindu shrine on a corner of the busiest intersection in the city, with resident dancers performing for people whose prayers were answered. Free, constant, and the sharpest contrast to the malls surrounding it.
- ~2.5hLumphini Park at dusk, then Sukhumvit or a rooftop walk-upThe park cools down around 17:00 and has resident monitor lizards. Afterwards, either a Sathorn or Silom rooftop bar — most enforce a smart-casual dress code — or dinner out along Sukhumvit toward Thong Lo and Ekkamai.
- Route logic:
- A straight west-to-east run along the Skytrain with the outdoor stops at the cool ends of the day and the malls filling the 12:00–16:00 heat, which is when Bangkok is least walkable.
- Getting between stops:
- Entirely on the BTS: National Stadium for Jim Thompson, Siam for the shopping core, Chit Lom for the shrine, then the Silom line to Sala Daeng or the Sukhumvit line east.
- Meals:
- Lunch: a mall food hall at Siam Paragon or MBK — genuinely good, air-conditioned and cheap. Dinner: Thong Lo or Ekkamai for the restaurant scene, or a Silom night-market stall.
- Rain / limited mobility:
- Prefer markets to malls: swap the Siam block for the Jodd Fairs night market instead of an early dinner. Traveling with kids: SEA LIFE at Siam Paragon or the Bangkok Art and Culture Centre opposite MBK fill the same air-conditioned slot.
Day 3 — Markets, or a day trip to Ayutthaya
Spend the last day either shopping the biggest market in the country or heading north to the ruined old capital — the two most rewarding uses of a free Bangkok day.
- ~3hChatuchak Weekend Market walk-upWeekends only, thousands of stalls, and genuinely disorientating — go early, agree a meeting point, and accept that you will not see all of it. BTS Mo Chit or MRT Chatuchak Park.
- ~3hWeekday alternative: Charoen Krung & Talat Noi walk-upIf it is not a weekend, walk Bangkok’s oldest paved street instead — Talat Noi’s shophouse lanes and mechanic workshops, the galleries and coffee bars around Charoen Krung 32, and Iconsiam across the river on the Gold Line.
- ~8hAlternative: Ayutthaya day trip book aheadThe UNESCO-listed former Siamese capital, roughly 1.5 hours north. Ruined brick prangs, the Buddha head grown into a fig tree at Wat Mahathat, and temple sites far enough apart that a tour or a hired driver earns its price.
- ~7hAlternative: floating markets & the Maeklong railway market book aheadDamnoen Saduak, or Amphawa on a Friday-to-Sunday afternoon, usually paired with the Maeklong railway market where stall awnings fold back as the train passes through the aisle. A long day out, and one that only works on the right days of the week.
- Route logic:
- A deliberately flexible last day: it can stay compact and in-city, or become a genuine day trip, depending on which day of the week you have landed on and how much heat you have left in you.
- Getting between stops:
- Chatuchak is a straight BTS or MRT ride north. Ayutthaya is about 1.5 hours by train from Krung Thep Aphiwat or by road on a tour; the floating markets are 1–1.5 hours southwest and effectively require a tour or a driver.
- Meals:
- Lunch: eat inside the market you chose — Chatuchak’s food sections are as good a reason to go as the shopping. Dinner: a Chao Phraya dinner cruise, or back near your base.
- Rain / limited mobility:
- Chiang Mai, Phuket and Krabi are NOT day trips from Bangkok — they are flights, and they need their own nights. Kanchanaburi and the River Kwai is a long but feasible single day if Ayutthaya does not appeal.
⚠︎ Before you book
- November–February and the days around Songkran (13–15 April) are Bangkok’s peak — book hotels two to three months ahead for those windows. Most tours and restaurants can still be arranged a day or two out.
- The Grand Palace sells tickets only until 15:30 even though the complex stays open to 16:30, and it enforces a covered-shoulders-and-knees dress code at the gate — arrive in the morning, dressed for it.
- Chatuchak opens at weekends only, Amphawa runs Friday to Sunday, the National Museum closes Mondays and Tuesdays, and Museum Siam closes Mondays — check the day before you build a plan around any of them.
Weather & mobility: Heat, not distance, is the limiting factor. From roughly 11:00 to 16:00 in the hot season the sensible move is to be indoors — a mall, a museum, a massage — and to put the walking at the ends of the day. Carry water, and expect to change shirts. In the monsoon months a heavy hour of rain in the late afternoon is routine and streets flood briefly; it rarely cancels a day, but it will strand you somewhere for forty minutes, so keep the schedule loose. Pavements are uneven, frequently obstructed and not reliably step-free, which makes the Skytrain and the river boats — both of which have lifts at most stations and piers — the easier way to move if mobility is a concern.
Budget: Bangkok is cheap by world-capital standards and offers an unusually wide range at every tier. Two figures are official and fixed: the Grand Palace and Wat Phra Kaew cost ฿500, and Chao Phraya express boats charge a flat ฿15–34 for the whole route depending on the flag line. The rest are approximate bands to sanity-check against current prices rather than quotes: a BTS or MRT single fare of a few tens of baht depending on distance; a street-food plate ฿50–80 and a food-court meal ฿60–120; a mid-range restaurant dinner ฿400–900 a head. The Airport Rail Link from Suvarnabhumi costs a small fraction of the metered-taxi fare into the centre, which lands in the several-hundred-baht range once the airport surcharge and expressway tolls are added. Upmarket restaurants and hotels quote “++”, meaning a service charge (usually 10%) and Thailand’s 7% VAT are added on top of the number you were shown. The cool season from November to February and Songkran in mid-April push hotel prices well above baseline; the monsoon months run cheapest.
Optional swaps
- Landed on a weekday? Swap Day 3’s Chatuchak for the Charoen Krung and Talat Noi walk, or give the whole day to Ayutthaya.
- Travelling in the hot season? Move Day 2 ahead of Day 1 so your temple morning falls on whichever day the forecast is kindest, and lean harder on the mall-and-museum middle of the day.
What this plan intentionally leaves out
- Chiang Mai, Phuket or Krabi as a day trip: They are domestic flights away, not drives. Each needs its own nights; trying to bolt one onto a three-day Bangkok trip costs you two days in airports.
- A fixed rooftop-bar booking: Bangkok’s rooftop scene changes constantly and most venues enforce dress codes and close in heavy rain — we point at the districts rather than naming a bar that may not be there or open when you arrive.
- The far outer suburbs and the eastern beaches: Pattaya and Bang Saen are two hours out and pull a short trip apart; with three days, the temples, the modern core and one market or Ayutthaya are already a full plate.
Planning notes & sources
The day-by-day routing — one river-bend temple day, one Skytrain day through the modern core, and a flexible markets-or-Ayutthaya day — and the time estimates here are our own, built around Bangkok’s traffic, its rail map and the hours of the day when walking outside is actually pleasant. Because fares, ticket prices, opening days and festival dates shift, confirm current details with the Tourism Authority of Thailand, the rail operators and the sites themselves before you set out — especially around Songkran in mid-April, when much of the city stops behaving normally.
- Tourism Authority of Thailand — official
- BTS Skytrain — routes and fares
- MRTA — Bangkok metro authority
- Chao Phraya Express Boat — fares by flag line
- Thai Revenue Department — VAT is currently 7%
- Thailand Digital Arrival Card (TDAC) — Thai Immigration Bureau
- The Grand Palace — official (฿500 entry, 08:30–16:30)
- Department of Provincial Administration — hotel licensing under the Hotel Act