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One page of sourced numbers per city: what a day costs, what the travel advisory says, and which months score best on the weather.

Data: GeoNames, Open-Meteo, World Bank, US State Department, UK FCDO.

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© 2026 Travel City Index. Every number on this site comes from a dataset named on the page that shows it.
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Vietnam · Hong Kong

Hanoi vs Hong Kong: cost, safety and weather compared (2026)

Every figure below comes from the same datasets for both cities, so the two columns are comparable.

Hanoi and Hong Kong compared on cost, safety, weather and size
HanoiVietnamHong KongHong Kong
Daily cost, per personestimate
Budget$35$85
Mid-range$80$195
Luxury$170$415
Price level0.29× US (2025)0.71× US (2025)
US advisoryLevel 1Level 2
Best monthsMar, Oct, Nov and DecJan, Feb, Oct and Dec
Annual rain2,287 mm2,310 mm
Average high28.4 °C26.1 °C
Population8.1M7.4M
Time zoneAsia/BangkokAsia/Hong_Kong

The short answer

Hanoi is about 59 % cheaper per day than Hong Kong, $80 against $195 (mid-range estimate). Hanoi has the lower US advisory level (1 vs 2). In September, the daily average is 28 °C in Hanoi and 28 °C in Hong Kong.

Keep reading

City overviews

  • Hanoi overview
  • Hong Kong overview

Cost and safety in detail

  • Hanoi trip cost
  • Is Hanoi safe?
  • Hong Kong trip cost
  • Is Hong Kong safe?

Where they rank

  • Cheapest cities in Asia
  • Safest cities in Asia

Countries

  • All cities in Vietnam
  • All cities in Hong Kong

Sources

  • GeoNames city database — CC BY 4.0, fetched September 14, 2026
  • Open-Meteo climate archive — CC BY 4.0, fetched September 21, 2026
  • World Bank price level and exchange rate — CC BY 4.0, data year 2025
  • US State Department travel advisories — public domain, fetched September 21, 2026

Dates are the most recent fetch across the cities on this page. Every sentence here is generated from the data by rule, with no AI writing; the formulas are public.