Seeing a spider on Halloween is a long-standing folk belief rather than a guaranteed omen. Across many traditions, it’s interpreted in a few common ways, often tied to themes of guidance, protection, or good fortune. Here are the main threads you’ll find:

• Guardian presence or connection to loved ones: Some beliefs say a spider on Halloween signals that a deceased loved one is watching over you or sending a gentle presence from the other side. This is a comforting interpretation shared in various folklore and popular posts.
• Good luck and protection: Another common reading is that spiders bring good luck or protection to your home, especially if the spider is allowed to remain rather than harmed.
• Creativity and life’s choices: The spider’s web is sometimes seen as a metaphor for the connections you’ve woven in life and for opportunities to shape your own path. A spider appears as a reminder to tend your personal “web” and to manifest what you’re building in the world.
• Caution with fear or superstition: In many Halloween traditions, spiders are part of the spooky atmosphere, and reactions to seeing one can reflect personal feelings about fear, the unknown, or superstition more than any external message.

Practical notes:

• If a spider is indoors, the practical takeaway is to handle it safely or gently relocate it, since spiders can help with insect control.
• If the sighting feels charged or emotionally significant, you can use it as a moment to reflect on creativity, protection, or gratitude for the people in your life.

If you’d like, I can tailor these interpretations to a specific cultural background or personal belief system, or provide quick tips for safely handling spiders during the Halloween season.