Best Weatherproof Padlocks

Updated October 23, 2026

We reviewed weatherproof padlocks across shackle and body material, keyed versus combination or digital-code operation, and corrosion resistance. Every pick here is a standalone padlock designed to attach to an existing hasp, chain, or gate latch -- not a built-in lock, so it works with whatever latch hardware you already have.

Keyed versus combination is mostly a matter of what you would rather manage day to day. A keyed padlock is generally the most weather-tolerant option since it has the fewest moving parts exposed to the elements, but you have to carry and not lose the key. A combination padlock removes the key-management problem and lets you share access by sharing a code, at the cost of a dial mechanism that can occasionally stick or become harder to turn after exposure to grit and moisture. Electronic keypad padlocks add convenience -- no dial to spin, no key to carry -- but they depend on a battery, which a purely mechanical lock never does.

Shackle material and diameter determine how much the padlock actually resists cutting or prying, which matters more outdoors where a lock is less visible to passersby. Hardened boron-carbide or stainless-steel shackles resist bolt cutters and saws far better than standard steel. A shrouded or partially recessed shackle design -- where the body of the lock covers most of the shackle -- adds another layer of resistance since there is less exposed metal for a cutting tool to grip.