Not to survive, but usually yes to keep working. What the shelter protects is the charging station, and the failure it prevents is a machine that cannot dock rather than a machine that has drowned.
What the IP rating actually says
Most robots on this shelf carry a code with an X in the first position and a modest digit in the second. That second digit corresponds to a specific water test — dripping, spraying or splashing from an apparatus, for a defined time — and none of the common ones is a rain test.
An enclosure that passed a splash test is an enclosure that passed a splash test. It is not a statement about a machine left out for a season, in sun that hardens seals and frost that shrinks them.
What the manuals say
Read the manufacturer’s own instruction and you will usually find advice to garage the machine over winter, and often a recommendation to shelter the docking station year round. That advice is the maker’s statement about its own product, and it outranks any inference from a code on the box.
What a garage is really for
The contacts. A dock sits at ground level where it collects grass, grit and splash. Contacts that oxidise or fill with debris give an intermittent charge, and the symptom is a machine that returns, fails to charge and sits there.
Sun. Ultraviolet is harder on the plastics of a garden robot than water is. A machine parked in full sun for five summers is chalky and brittle; the same machine under a roof is not.
Hail and falling debris, which are outside every test on the label.
Theft, which some of the branded garages address with a lock point and most do not.
What a garage does not fix
A machine that is being rained on while it mows — it is out in the same weather either way, and whether it should be is a setting in the app rather than a question of shelter.
How this site handles it
The robot garage family here is a separate shelf, and the pages state what each one is made of, whether it is anchored, and which machines the maker names. The robot pages print the IP code exactly as the listing gives it, digits and X alike, and never translate it into a claim about weather.
The questions that keep coming in
My robot is rated IPX4. Is that not weatherproof?
The fourth level is tested with water splashed from every direction by a defined apparatus. Rain with wind behind it for six hours is not that test, and the code does not claim it is. The IP code has its own page here.
Is a garage worth it for a machine that already lives outside?
Mostly for the dock rather than the machine. Charging contacts in the open collect grit and oxidise, and a robot that will not dock is a robot that stops working long before it fails.
Last reviewed 26 September 2026