Iran’s Hormuz Island Turned Red After Heavy Rain, ‘Blood Rain’ Videos Go Viral

On December 16–17, 2025, intense rains caused Iran’s Hormuz Island to become red. Shallow waterways and the coastline were darkened by flow from iron-rich hills.The scene went viral as videos showed red streams flowing into the Persian Gulf. Scientists confirmed a natural geological cause.

On December 16 and 17, Iran’s Hormuz Island turned red after intense seasonal rainfall. Streams ran from the hills and reached the shore. The sea near the coast changed color within hours.

Heavy rain hit the island overnight. Some areas recorded close to 100 millimeters. That is several times the usual December average. The downpour pushed mineral-rich soil downhill. The runoff reached the beaches and shallow waters.

The visuals drove the reaction. Clips showed red water pouring off cliffs. Tourists walked along crimson sand. Many posts called it Hormuz Island, Iran’s blood rain. Some users linked it to prophecies. Scientists stepped in fast and explained the cause.

Experts say the event had nothing to do with pollution or algae. Hormuz Island Iran red water comes from iron oxide. The island holds large amounts of hematite. Rain dissolves fine particles and carries them to the sea. The color fades as sediments settle.

The geology explains why this keeps happening. Iran Hormuz Island sits on ancient salt domes and volcanic layers. Locals call it Rainbow Island for a reason. The red soil, known as Golak, even appears in local food and pigments.

Tourism sites report more searches for Hormuz Island Iran red rain. Visitors know the timing matters. After storms, the color peaks. Then the island returns to normal, at least until the next rain.