My four year old daughter has not wet the bed in about a year. A few nights ago (on an unexpectedly cold night) she did. There are several questions here about bed wetting and regression, but I'm specifically wondering about being cold at night being a trigger for bed wetting. A web search reveals a couple of message board anecdotes, but I was hoping for something more concrete.

Can being cold at night cause a child to wet the bed again?

  • If it's just a one-off, I wouldn't consider it regression. At 4 it's common to have the occasional accident. Mar 23, 2016 at 23:17
  • 1
    Did this also happen around a time change? My twins, one fully trained, the other partially, had accidemts after the switch to dst.
    – mkennedy
    Mar 24, 2016 at 4:37
  • I... wet my bed the last time when I was... uh, 34. The previous time before that was... 28... I don't think I'm regressing, but it does happen lol...
    – Nelson
    Mar 24, 2016 at 7:17
  • @mkennedy You may be on to something! It was after the time change, and the last time she did it, she had massive jet lag. Mar 25, 2016 at 11:55
  • Thanks for the help, everyone. It hasn't happened again, so I'll just (happily) let it go. Mar 28, 2016 at 12:45

2 Answers 2


In my experience, things that contribute to my children wetting the bed are primarily one of three things:

  • Drinking more before/during bedtime
  • Sleeping more soundly
  • Barriers to getting up to go in the middle of the night

(Plus of course forgetting to go right before bed.)

How could cold affect these?

  • When it's cold outside, it's also dry. That means the child may be thirstier, and thus drink more before/during bedtime.
  • Some children may sleep more soundly in the cold, though it's more common that sleep is sounder in warmth. But, your child may have dressed more warmly and/or put on more covers than usual, and thus ended up sleeping more soundly.
  • Having all of those covers on would be a substantial barrier to going to the bathroom in the middle of the night. It also would be cold getting out of them - another barrier.

All that said, given the n=1 nature of this occurrence, I wouldn't read too much into it. Yes, it's possible it's related to the cold. It's also possible she just had an accident. That's entirely normal and to be expected until 6 or so, from what I recall (and some kids, even older than that). I wouldn't see it as regression at all.


My son, age 6, consistently wets himself when we ski. I've tried making him go to the toilet right before we change into ski gear, restricting liquids, a combination of both and threats. I genuinely believe the cold itself is the trigger. He's been fully toilet trained and dry through the night since age 2 but something about the extreme cold means he can't even feel himself wee.

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