Rainfall occurring during a lunar eclipse is believed in many cultures to be a particularly dangerous and ominous sign. The conjunction of two rare natural phenomena—rain and an eclipse—is viewed not just as unlucky, but potentially catastrophic. Folklore holds that such rain may “carry” harmful spiritual or cosmic residue, capable of causing crop failure, widespread disease, or even death if it touches skin or enters the water supply.

In some traditions, the eclipse itself represents imbalance or cosmic disorder. When rain falls simultaneously, it is interpreted as nature expressing distress or divine anger. Protective rituals or avoidance behaviors often accompany such events, including staying indoors, covering stored grain, or shielding livestock and crops from exposure.