Plain English Meaning
A pilot's own personal limits on what weather they're willing to fly in. These limits are stricter than what the rules require, and they reflect what the pilot honestly feels safe handling.
Full Definition
A self-imposed set of weather conditions — such as ceiling, visibility, wind, and crosswind component — that a pilot decides in advance must be present before they will undertake a flight. Personal weather minimums are stricter than the legal minimums set by regulation and are tailored to the individual pilot's experience, currency, and the specific aircraft being flown.
Context Anchor
Used while planning a flight and again in flight when deciding whether to keep going, wait, turn back, or land somewhere else.