Direct answer: key risks and limitations

A privacy-conscious digital nomad should understand that a VPN on public Wi‑Fi can reduce some exposure, but it cannot guarantee anonymity, safety, or reliable access. The protection you get depends on operating conditions (your device, the Wi‑Fi network, your VPN settings, and how you use the device). Performance and reliability can also vary by network, device, location, time, and provider, which can lead to unexpected outages or partial protection if settings aren’t correct.

How it works in public Wi‑Fi conditions

On public Wi‑Fi, the main risk is that others on the same network may try to observe or interfere with unprotected traffic. A VPN typically aims to protect traffic between your device and a VPN endpoint by encrypting it, so a typical goal is to prevent simple network-level observation.

However, real-world outcomes depend on details you control:

  • Whether the VPN starts before you browse
  • Whether DNS and other traffic stay within the VPN tunnel
  • Whether the “always-on” behavior you expect is actually enabled
  • Whether your device has leaks or misconfigurations

Possible consequences if you make the wrong setup decision

Common failure modes include:

  • Browsing before the VPN is active, which can expose some traffic
  • Misconfigured DNS/resolver behavior that can reveal requests outside the tunnel
  • Relying on a connection that drops, leaving some traffic briefly unprotected
  • Overestimating privacy: even with a VPN, websites, apps, accounts, browser logs, and device fingerprints can still identify you

Even when the VPN is working, availability and speed can change, so a trip you planned around certain services may be interrupted.

Exceptions and what to verify in practice

Because there are no fixed guarantees, treat each setup decision as testable. Practical checks include:

  • Confirm the VPN is connected before visiting sensitive sites
  • Perform DNS-leak and general leak tests using reputable, non-sensitive test domains
  • Test what happens during a forced disconnect (to see whether unprotected traffic continues)
  • Review your browser and device settings (permissions, auto-connect, DNS behavior)
  • Prefer more secure networks when possible (for example, networks with strong encryption and stable access)