I can't remember when or where I saw it, but at one point I remember being able to fill a cauldron with rainwater.

Is this possible in Vanilla Minecraft?

2 Answers 2


To quote the Minecraft wiki:

A cauldron slowly fills with water when rained upon, if starting empty or with some water. This happens randomly, at 5% of the rate in which snow accumulates on the ground during snowfall.

Yes, it has a chance to fill it. In fact someone even built a machine that fills them when it rains and I suspect you could use them as a type of rain detector with a comparator.

  • does someone knows what is the chance (%)?
    – Tmpod
    Aug 18, 2016 at 14:08
  • i.imgur.com/JwZK1qd.png (from MCP) which basically means a 1 in 20 chance roughly, which is ran about 1:16 chance when it rains/snows each tick.. so not very often.
    – Codingale
    Aug 19, 2016 at 21:00

Cauldrons do collect rainwater, however, it is only by chance.

A cauldron also has a chance to fill up with water when rained upon.

According to the Minecraft Wiki.

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