A very scary situation has taken place in Espírito Santo do Dourado, Brazil recently. A local boy had recorded on video what appeared to be a rain shower of spiders. Some locals actually said the sky look like it was “raining with spiders” but even though the spiders look like they are falling, they are actually moving on top of a huge web.
Experts say this is very typical in the region because of how hot and humid the weather is. Spiders will usually share their webs with other spiders during this time. They say it's a tactic spiders use to help catch food, usually insects. Silk threads act as parachutes, so the rain of spiders is also called 'ballooning'."
Experts also say that they are 100% harmless, in case you were wondering.
Source: The Sun