25 Degrees Burger Bar
188 Si Lom Rd, Khwaeng Suriya Wong, Bang Rak, Bangkok 10500
If you only get one late-night burger in Bangkok, this is the play. The 2 AM to 4 AM buy-one-get-one-free window on Signature Burgers turns a midnight craving into a doubled order at no extra cost. Big-screen sports streaming runs around the clock too, so the room doubles as a kickoff venue on matchdays. Order the Signature first, then bring a friend back between 2 and 4 AM.
Walk in from Silom Road and the diner room sits on the ground floor of the Pullman Bangkok Hotel G. The fit-out leans on old-school American diner styling, with vintage details that double as photo ops.
The Bangkok room is part of a small group with sister locations in Hollywood and Lake Tekapo. The patties get hand-crafted in the house kitchen. The buns are baked on-site for what the operators describe as a golden pillowy result. The venue carries an LSA Best Burger in Bangkok award, which it dedicates to its long-running guests. The Signature Burger anchors the menu, while wings, hot dogs, salads and a dedicated vegan section keep the table workable for a mixed group of eaters. The kitchen runs on a 24-hour clock, which means a 3 AM cheeseburger and a 10 AM espresso can land on the same bill if you stay long enough. Coffee, cocktails, beer and wine all run on the same schedule.
Two pricing windows are worth memorizing. Weekdays from 11 AM to 3 PM, the lunch set bundles a Signature Burger, fries and a drink for THB 380 net at mid-size or THB 495 net at up-size. The other window opens at 2 AM and closes at 4 AM, every night of the week, with a one-for-one offer on signature burgers. That buy-one-get-one is tied to those exact two hours, so it pays to time the arrival rather than rolling in around midnight and waiting it out at the bar.
The dining room has free on-site parking on the Pullman Hotel G premises, and big-screen sports streaming runs around the clock. Delivery moves through GrabFood and LINE MAN, while @25degreesbkk on LINE handles direct orders. Through May and June 2026, the kitchen runs a Curry Takeover collaboration. Thai classics like Khao Soi and Massaman get the stacked-burger treatment alongside green curry, riding on top of the regular menu.