# Draining water

**URL:** <https://boards.straightdope.com/t/draining-water/5257>\
**Category:** Factual Questions\
**Created:** [December 11, 1999, 1:01am UTC](https://boards.straightdope.com/t/draining-water/5257 "1999-12-11T01:01:00Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Cleo](https://avatars.discourse-cdn.com/v4/letter/c/41988e/32.png) [@Cleo](https://boards.straightdope.com/u/Cleo)\
**Post date:** [December 11, 1999, 1:01am UTC](https://boards.straightdope.com/t/draining-water/5257/1 "1999-12-11T01:01:00Z")

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Why does hot water drain faster than cold? I know viscosity (and therefore Reynold’s number) varies with temperature, but is there more to it?