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I can't find much of any rules for sleep in pathfinder, or at least the requirement for sleep. Specifically, what happens if you sleep with no bed (in the wilderness, etc)? What happens if you sleep in inclement weather? What happens if you don't sleep at all? Are there rules for these situations, and if not, does anyone have house rules for it that they like?

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up vote 11 down vote accepted

The d20PFSRD collates the relevant bits conveniently for you here. They extrapolate on some aspects but the RAW bits are

Characters who do not get a full night's sleep may suffer the effects of fatigue. If a PC does not get at least 6 hours of sleep, she must make a DC 15 Fortitude save or be fatigued and take a –1 penalty on all other checks and saving throws against sleep effects. A second night without sleep requires another DC 15 Fortitude save. A failed save results in the character becoming exhausted and the penalties increasing to –2. A third failed save on the next night increases the penalties to –3.

and from the Armor Check Penalty section

A creature that rests or sleeps in medium or heavier armor gains the fatigued condition if they do not possess either the Endurance feat or some other class or race ability which allows them to sleep in such uncomfortable gear.

As for inclement weather and the like, the weather section doesn't have instructions on how much it disrupts sleep but I'd think that anything that overcomes your +10 Perception DC when asleep would wake you up.

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The entire "if a PC doesn't sleep, they must make a Fortitude save or be fatigued" paragraph is not how it works RAW; d20PFSRD cut off the beginning of the first sentence. Quoted from the actual source, it reads: "You might also consider using a variant rule where characters who do not get a full night’s sleep may suffer the effects of fatigue." The fact it's presented as a possible variant rule (which it also says is to "heighten the atmosphere of horror") means that's not how the rules normally work. Meaning that, by RAW, you do not suffer fatigue from missing sleep. – Azrael Jun 3 '15 at 3:55
@Azrael Can you post that as an answer? – Thanuir Aug 28 '15 at 5:32

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