Snowfall in Bengaluru? City Roads Covered in White Foam After Rains, Videos Go Viral

After weeks of relentless heat, Bengaluru finally welcomed heavy rains on Saturday, bringing much-needed relief and an unexpected spectacle. As rainwater flowed through the streets, a thick, white foam began appearing on several roads, leaving residents both amused and puzzled. Videos of the phenomenon quickly went viral, with many joking about a “foam party” or even “snowfall” in the city.
What Caused the Mysterious Foam?
Contrary to initial fears of pollution or chemical rain, experts clarified that the foam is entirely natural—and harmless. The culprit? The soapnut tree (Sapindus species), commonly found across Bengaluru.
When the first rains of the season hit, the tree’s flowers, rich in natural saponins, mix with water. These saponins act like surfactants, creating a frothy foam that spreads across wet roads. While the sight may seem bizarre, it’s a recurring event in the city, especially after dry spells.
A Slippery Surprise for Commuters
Though the foam is harmless, it does pose a risk—especially for two-wheeler riders. The slippery layer can lead to skidding, prompting warnings for motorcyclists and cyclists to navigate affected areas with caution.
Social Media Buzz: Theories and Jokes Galore
A viral Instagram video shared by user @milanfied captured the surreal scene near NIMHANS Dairy Circle, racking up 4.5 million views. While some netizens cracked jokes—“Someone dropped Surf Excel on the road!”—others confirmed the soapnut tree theory.
Watch the video clip here:
One user explained, “It’s the soapnut flowers reacting with rainwater. Always fun to watch but dangerous for bikers!” Another added, “Bengaluru’s version of snowfall!”
Long-time residents, however, were unfazed. For them, the foam is just another quirky reminder of how nature interacts with urban life in India’s tech capital.
So, while Bengaluru’s “foam snowfall” might baffle newcomers, it’s just another day in the city’s unpredictable weather diary!
(With inputs from social media and expert insights.)