While your average rain doesn’t damage fireworks, especially if they are properly waterproofed and stored, you don’t want to risk setting off fireworks in a drenching rain. If the rain is heavy and stormy, it might be a good idea to wait for it to calm down. Wind is another factor you need to keep in mind.

Do sparklers work underwater?

No, you cannot light sparklers underwater. Unfortunately, once it gets wet, it is very difficult to get it burning. Additionally, very few sources of ignition can perform underwater. In order for it to ignite, you need to get a temperature of nearly 2000° Fahrenheit near the tip.

What happens to fireworks in the rain?

Fireworks can be set off in the rain, as long as they are in sealed containers that limit the amount of water that touches them. Wet fuses will not light. While people may not like to sit in the rain and watch a firework show, the rain is typically not an issue for fireworks themselves.