Worried your hot shower ruined your fast? Scholars say ordinary steam doesn’t break the fast — only thick steam that turns into water and is swallowed does.
According to the fatwas of the religious authorities, bath steam by itself does not invalidate the fast. However, there are several important points to note in this regard.
Answer: Inhaling it does not invalidate the fast; but if the steam is thick or mist condenses into water and enters the lungs (or is swallowed), it invalidates the fast.
If bath steam converts to water in the mouth and a person intentionally swallows it, the fast is invalidated.
Some religious authorities recommend the precautionary requirement (ihtiyāt jā’ib) of avoiding dense bath steam.
It is better during fasting to avoid exposure to heavy bath steam to prevent doubt and uncertainty.
Breathing ordinary bath steam by itself does not break the fast.
Immersing the head in water invalidates the fast.
In summary, bath steam alone does not break the fast unless it converts into water and is swallowed. Nevertheless, observing caution and avoiding thick steam is recommended.
