Koh Samui vs Udon Thani
for digital nomads
Under balanced weights Udon Thani edges it, 58 to 56, winning 2 of the 9 factors. Koh Samui is stronger on nothing outright; Udon Thani on climate. Change the weights in the ranker to see which one wins for you.
Big island hub with resorts, villas and a real airport
Full Koh Samui profile →Where to stay in Koh Samui →Northeastern rail and air hub with a large Western retiree community
Full Udon Thani profile →Where to stay in Udon Thani →Factor scores (0–100, balanced weights)
| Metric | Koh Samui | Udon Thani |
|---|---|---|
| Cost of living | 60 | 60 |
| Safety | 51 | 51 |
| Healthcare | 76 | 76 |
| Internet | 69 ✓ | 69 |
| Visa ease | 58 | 58 |
| Getting there & around | 28 | 33 ✓ |
| Climate | 25 | 42 ✓ |
| Air quality | 88 ✓ | 82 |
| Quality of life | 49 | 49 |
Cost
| Metric | Koh Samui | Udon Thani |
|---|---|---|
| Monthly cost, one personcountry-level estimate for at least one city | $1,000 | $1,000 |
| Central one-bedroom rent | no data | no data |
Safety and health (country-level)
| Metric | Koh Samui | Udon Thani |
|---|---|---|
| Homicides per 100k | 4.4 | 4.4 |
| Political stability (0–100) | 55.8 | 55.8 |
| UHC service coverage (0–100) | 82 | 82 |
| Life expectancy | 75.3 yrs | 75.3 yrs |
Internet (M-Lab measured medians)
| Metric | Koh Samui | Udon Thani |
|---|---|---|
| Download | 33.3 Mbps | 34.3 Mbps ✓ |
| Upload | 19.9 Mbps ✓ | 17.1 Mbps |
Visa
| Metric | Koh Samui | Udon Thani |
|---|---|---|
| Nomad visa | Destination Thailand Visa (DTV) | Destination Thailand Visa (DTV) |
| Minimum income for the visa | no data | no data |
| Entry, US passport | 30 days | 30 days |
| Entry, EU passport | 30 days | 30 days |
| Entry, UK passport | 30 days | 30 days |
Getting there and around
| Metric | Koh Samui | Udon Thani |
|---|---|---|
| Non-stop airport destinations | 10 ✓ | 6 |
| Walkability (1–5, editorial) | 2 | 3 ✓ |
| Transit (1–5, editorial) | 1 | 2 ✓ |
Climate and air
| Metric | Koh Samui | Udon Thani |
|---|---|---|
| Comfortable months per year | 3 | 5 ✓ |
| Annual mean PM2.5 | 10.4 µg/m³ ✓ | 13 µg/m³ |
✓ marks the better value in each row; ties and missing data are left unmarked.
Frequently asked
- Which is cheaper, Koh Samui or Udon Thani?
- Udon Thani is cheaper: about $1,000 per month versus $1,000 for one person.
- Is Koh Samui or Udon Thani safer?
- Koh Samui scores higher on safety (51 vs 51), based on national homicide rates and World Bank political-stability scores.
- Where is the internet faster, Koh Samui or Udon Thani?
- Udon Thani: a measured median of 34.3 Mbps versus 33.3 Mbps (M-Lab, 2024).
More comparisons
- Koh Samui vs Koh Lanta
- Koh Samui vs Koh Phangan
- Udon Thani vs Hua Hin
- Udon Thani vs Koh Phangan
- All comparisons
Sources: Cost of Living Global 2026 (city rows); 2026 Cost of Living Index (country level); Worldwide Governance Indicators — Political Stability and Absence of Violence (score 0–100); Estimates of rates of homicides per 100 000 population; UHC service coverage index; Life expectancy at birth (years), both sexes; M-Lab NDT statistics (city aggregates, 2024); Airport destinations (Wikipedia airline and destination tables); NASA POWER climatology (2001–2020 monthly means); WHO Ambient Air Quality Database, June 2026 update (V8); SatPM2.5 satellite-derived annual PM2.5 (V6.GL.02.04); Human Development Index (HDR 2025, HDI 2023); EF English Proficiency Index 2024 (band); Walkability and transit ratings (editorial); Passport Index dataset (visa requirements, 199 passports × 199 destinations); Official entry rules that changed after the Passport Index snapshot; OpenStreetMap restaurants (Overpass API); Nostos long-stay visa guides; Starlink availability map. Dataset 2026.10.7. See each city page for per-metric footnotes and the methodology.