the relevant weather forecasts of the area should always be taken into account before entering a favela, as heavy rain in structurally unsound areas can have catastrophic results.

It is not uncommon for rocks or jackfruits to fall from above, especially during storms. in the past, landslides and collapsing structures have resulted in serious injury and even death.

in case heavy rainfall while in a favela, it is best to find a safe, covered area and remain there until the rain ceases.  the surfaces of the steep paths typically found in favelas tend to become extremely slippery during rain, which makes it unsafe for visitors to attempt to leave, unless the exit is in close proximity.

special attention should also be paid to walls as rusty nails, unfinished wood and other sharp objects can protrude, it is therefore particularly important to stay up-to-date with tetanus shots.