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Cost of living in Koh Samui, in US dollars
A lean, mostly-local single-person budget in Koh Samui runs around ฿31,600 a month — about 13% pricier than Bangkok — and the table below converts that and its parts to US dollars at today’s rate.
Koh Samui is a Gulf island where the logistics of island life — imported goods and ferried supplies — lift everyday costs above the mainland.
This is an orientation estimate for one person living mostly local, not a formal survey — housing is the biggest variable, and a more comfortable or Western lifestyle runs well above it.
Lean monthly budget, Koh Samui
| Item | THB | ≈ USD |
|---|---|---|
| Rent (lean studio/1-bed) one place | ฿16,000 | $483.02 |
| Food (mostly street/local) ~2 meals/day | ฿7,200 | $217.36 |
| Coffee ~20 cafés | ฿2,400 | $72.45 |
| Transport (BTS/MRT + Grab) daily commute | ฿3,000 | $90.57 |
| Leisure (massage, nights out) weekly-ish | ฿3,000 | $90.57 |
| Total / month | ฿31,600 | $953.96 |
On this lean single-person basket, Koh Samui works out about 13% pricier than Bangkok. Housing is the biggest variable — build a budget for your own lifestyle to get a figure you can use.
These figures are an estimate of a lean, mostly-local single-person budget, drawn from reported living costs and community data — not a formal survey, and your own costs will vary. Aggregators like Numbeo report higher averages that include more comfortable lifestyles; build a budget for your situation in the planner. Figures as of mid-2026. Sources: Numbeo — Koh Samui .
Questions & answers
- How much does it cost to live in Koh Samui per month in USD?
- On a lean, mostly-local lifestyle, a single-person estimate is around ฿31,600/month; the table shows today’s dollar equivalent. A comfortable or Western lifestyle can run two to three times that.
- Is Koh Samui cheaper than Bangkok?
- On this lean single-person basket, Koh Samui works out about 13% pricier than Bangkok. Rent is the main driver; day-to-day local costs are broadly similar across Thailand.