What to Wear in Bangkok in December
Bangkok in December: 32°C / 90°F afternoons, 23°C / 73°F nights, a palace closed on the 5th and the royal cremation ceremonies, 15–19 December.
- Ivory long-sleeve blouse — the palace's 2024 regulation asks for a long sleeve even under a draped sabai
- Navy straight-leg trousers to the shoe — the same regulation turns away three-quarter and baggy khaa kuay trousers
- Black ankle-length skirt — the palace bans mini skirts, and Wat Pho bars women's shorts above the knee
- Navy short-sleeve midi dress — sleeves and a mid-calf hem pass both gates in one piece
- Dove-grey backless loafers — Wat Pho has you leave your shoes on a shelf at every religious building
- Navy top-handle bag that latches — the palace lists 84 items found inside its walls since 2023
- Cropped trousers at the Grand Palace — clause 7(5) of its regulation names three-quarter lengths
- A sleeveless top under a wrap — the palace bans sleeveless shirts, and even a sabai needs a sleeve beneath
- A palace visit on Saturday 5 December — its calendar marks the day closed
- Fixed old-city plans for 15–19 December — the regulation suspends visits on royal ceremony days
December is the old city's ceremonial month. The Grand Palace closes all day on Saturday 5 December for the royal birthday commemoration of King Bhumibol, and the royal cremation ceremonies for Queen Sirikit The Queen Mother run 15–19 December at Sanam Luang, beside the palace. TMD's normals for Bangkok Metropolis make December the coolest, driest and least humid month of the year, yet the afternoon still reaches 32.3°C. The palace sets the terms: "Visitors to The Grand Palace must dress appropriately because The Grand Palace is a place of reverence for the Thai people." Pack sleeves, full-length trousers and long skirts in black, ivory, navy and grey, and check the week's arrangements before you fix a day in Rattanakosin.
In December the old city's dress is a sleeve and a long hem in plain colours, with shoes that come off in one step and a day planned around the palace calendar rather than the forecast.
The capsule
01Ivory long-sleeve blouse, point collar, buttoned cuffsSleeves are how the palace measures cover. Its English list bans sleeveless shirts and see-through tops, and its 2024 regulation goes further: even with a diagonally draped sabai, a long-sleeved top has to go underneath. An opaque ivory blouse settles both on a 32.3°C afternoon, and the buttoned cuffs roll back once you are outside the walls.
02Black crew-neck teeYour second top, for the days the blouse is drying. The palace list bars sleeveless shirts, vests and short tops, and a hip-length tee with a proper sleeve clears all three. Black is the plain choice in a month when the old city holds a royal cremation, and it works with the navy trousers and the black skirt alike.
03Navy pleated straight-leg trousers, full lengthClause 7(5) of the palace's 2024 regulation names the trousers it turns away: shorts, tight stretch trousers, fashion-ripped trousers, khaa kuay, the loose baggy kind, and three-quarter lengths. A pressed straight leg that reaches the shoe avoids every one. Navy goes with the ivory blouse, the black tee and the grey loafers, so one pair covers a week.
04Black ankle-length A-line skirtYour skirt answer to the same rule. The palace bans mini skirts, Wat Pho prohibits shorts above the knee for women, and the regulation wants even a ready-made jong kraben to fall well below the knee. An ankle-length A-line in opaque black ends the question at every gate and still walks freely from the express boat at Tha Chang pier to the ticket office.
05Navy short-sleeve midi dress, tie waistOne piece that passes both gates. Short sleeves cover the shoulder and the hem falls to mid-calf, which meets the palace's bar on mini skirts and Wat Pho's on women's shorts above the knee. Wat Pho stays open until 7:30pm, well after a 5:53pm mid-month sunset, so this goes from the temple to a riverside dinner without a change.
06Dove-grey suede backless loafersWat Pho's rule is plain: "It is required to take off your shoes and put them on the shelf before entering religious buildings." A backless loafer steps off and back on in one move, with no heel strap or laces to deal with at every hall. Dove grey sits between the navy and the black, and with rain on about one December day, suede is safe.
07Navy leather top-handle bag with a turn-lock flapShoes come off at every hall, so your hands need to be free and your bag shut. The turn-lock flap closes properly, and the detachable strap wears it crossbody while you deal with your loafers. The palace keeps a found-items notice on its own page: 84 items left inside the Grand Palace and the Emerald Buddha temple since 2023.
08Navy cotton wide-brim hatDecember is the driest month on TMD's table, with 213.5 hours of sunshine, and a palace day runs from the 8:30am gate to the 3:30pm last ticket, mostly outdoors between halls. A soft navy brim shades your face and neck through the courtyards, then folds into the bag at each hall door. Navy keeps it in line with the trousers and the dress.
Day to night
Palace morning. Ivory long-sleeve blouse · black ankle-length skirt · dove-grey backless loafers · navy top-handle bag · navy brim hat for the courtyards. Take the Chao Phraya Express Boat to Tha Chang, buy your ticket from 8:30am (500 baht, sales stop at 3:30pm) and spend the hottest hour in the Queen Sirikit Museum of Textiles, which the same ticket covers.
Wat Pho to the river. Navy short-sleeve midi dress · dove-grey backless loafers · navy bag. Wat Pho charges 300 baht and stays open until 7:30pm; sunset comes at about 5:53pm in mid-December, and TAT expects the Vijit Chao Phraya river lights to run until 13 December.
A suggested look — ivory long-sleeve blouse, black ankle-length a-line skirt, dove-grey suede backless loafers.
What to avoid
- Three-quarter or baggy khaa kuay trousers at the Grand Palace
- A sleeveless top with a wrap thrown over it
- A Grand Palace visit on Saturday 5 December
- Fixed old-city plans for 15–19 December before the Royal Household confirms them
- Lace-up shoes on a day of shoe shelves at Wat Pho
Frequently asked questions
Hot by day, warm at night and as dry as Bangkok gets. The Thai Meteorological Department's (TMD) normals for its Bangkok Metropolis station give December an average high of 32.3°C / 90°F and a low of 23.2°C, with 11.6mm of rain on about one day and 65.6% relative humidity: the coolest, driest and least humid month on the table. TMD grades a winter night as cool only between 16.0° and 22.9°C, so an average December night in Bangkok sits just above that band. Sunrise moves from 6:26am on 1 December to 6:41am on the 31st, and sunset from 5:48pm to 6:01pm.
An ivory long-sleeve blouse, a black crew-neck tee, navy straight-leg trousers, a black ankle-length skirt, a navy short-sleeve midi dress, dove-grey backless loafers, a navy top-handle bag and a navy wide-brim hat. That covers the Grand Palace's dress list and its 2024 regulation, Wat Pho's shoe shelves and a 32°C afternoon in full sun. Leave cropped trousers and sleeveless tops at home; both fail at the palace gate.
Check before you go. The palace's own calendar marks Saturday 5 December closed all day for the royal birthday commemoration of King Bhumibol, while the Temple of the Emerald Buddha stays open; the bank holiday moves to Monday 7 December. The royal cremation ceremonies for Queen Sirikit The Queen Mother run 15–19 December, on the schedule the Government Public Relations Department issued: the cremation at Sanam Luang at 4:30pm on Wednesday 16 December, with ceremonies that week at the Dusit Maha Prasat Throne Hall, the Temple of the Emerald Buddha, Wat Ratchabophit and Wat Bowonniwet. As of late October the palace calendar still shows those days open, but it warns its dates can change, and the Bureau of the Royal Household's 2024 regulation suspends visits on any day with a royal ceremony. Closures, public dress guidance and any special holiday for the week have not been published; watch the Royal Household's notices and the Government Public Relations Department's In Remembrance page from 1 December.
Early December has more open days in the old city. TAT expects Vijit Chao Phraya, the river light festival, to run until 13 December; the palace closes on Saturday 5 December, and the Bank of Thailand lists holidays on Monday 7 December and Thursday 10 December, Constitution Day. Mid-month belongs to the royal cremation ceremonies, 15–19 December, when ceremony days can close the palace. Late December brings the New Year's Eve holiday on Thursday 31 December, and TMD's seasonal outlook, as Khaosod English reported it on 15 October, expects this winter's coldest spell from late December, with Bangkok minimums of 19–21°C. That is a forecast, not the normal.
December is cooler, drier and less humid. TMD's normals give December 32.3°C by day and 23.2°C at night against January's 32.7°C and 23.4°C, half the rain (11.6mm on about one day, against 23.6mm on about two) and 65.6% humidity against 67.9%. Sunset moves from 5:53pm in mid-December to 6:09pm in mid-January. The months differ more in what is on. December is the old city's ceremonial month, with the palace closed on the 5th and the royal cremation ceremonies on 15–19 December. Our January guide is built around the Bangkok Art Biennale, open until 28 February, and its works inside Wat Arun, Wat Pho and Wat Prayoon.
Often chut thai, and its royally favoured styles trace to 1960. That year Queen Sirikit accompanied King Bhumibol on long state visits to the United States and Europe, found there was no official national dress for those duties, and commissioned the research that produced the Chud Thai Phra Ratchaniyom. The Government Public Relations Department counts them: "There are altogether eight styles of the Thai national dress for ladies." They became "the standard for formal attire at major state functions and other events, such as wedding and religious ceremonies". In 2003 the Queen asked to use a vacant building inside the Grand Palace for a museum of textiles, and the Queen Sirikit Museum of Textiles is part of the 500-baht palace ticket. As a visitor, you dress for the palace's list, not for the ceremonies.
Sources
- Thai Meteorological Department — 1991–2020 climate normals, Bangkok Metropolis stationThe Thai Meteorological Department's 1991–2020 normal for its Bangkok Metropolis station, as submitted to the WMO's normals collection. Rain days are days with 1 mm or more.
- Thai Meteorological Department — 1991–2020 climate normals, Bangkok Metropolis (48455), as submitted to the WMO's normals collection (NOAA NCEI accession 0253808) — accessed 2026-10-26
- Government Public Relations Department (thailand.go.th) — The Seasons of Thailand (Thai Meteorological Department) — accessed 2026-10-26
- The Grand Palace (Bureau of the Royal Household) — Practical information: dress code, hours, tickets, found items — accessed 2026-10-26
- Bureau of the Royal Household — Regulation on visiting the Grand Palace and royal residences, B.E. 2567 (2024), clauses 6 and 7 (Thai) — accessed 2026-10-26
- The Grand Palace — Visiting calendar (closed all day 5 December 2026 for the royal birthday commemoration) — accessed 2026-10-26
- The Grand Palace — Home: the Emerald Buddha's seasonal attire and the Queen Sirikit Museum of Textiles (2003) — accessed 2026-10-26
- Bank of Thailand — Notification No. 31/2568: financial institutions' holidays for 2026 (unofficial translation) — accessed 2026-10-26
- The Nation — Queen Sirikit's royal cremation set for 16 December at Sanam Luang (ceremonies 15–19 December 2026) — accessed 2026-10-26
- Bangkok Post — Dates set for Queen Mother's cremation (PRD schedule, 23 September 2026) — accessed 2026-10-26
- Government Public Relations Department (thailand.go.th) — In Remembrance of Queen Sirikit The Queen Mother (notices and visitor information) — accessed 2026-10-26
- TAT Newsroom — Mourning practices following the passing of Queen Sirikit The Queen Mother (26 October 2025) — accessed 2026-10-26
- Wat Pho — Visit plan: hours, admission, dress and shoes — accessed 2026-10-26
- TAT Newsroom — Vijit Chao Phraya 2025 concludes; 2026 edition anticipated 13 November – 13 December 2026 — accessed 2026-10-26
- Khaosod English — Thai Meteorological Department winter outlook 2026–27 (coldest period late December to early February) — accessed 2026-10-26
- Government Public Relations Department (thailand.go.th) — Royal Favored Thai Costumes (Chud Thai Phra Ratchaniyom, 1960) — accessed 2026-10-26
