Anything offshore happens out at sea — and when you're talking about the wind, offshore means it's blowing toward the land.

During your Caribbean vacation, you might paddle out to an offshore sandbar, a raised area away from the beach. You could also put on fins and a snorkel and check out some offshore coral reefs. Offshore breezes bring cooler air to the coast, and offshore drilling is a method of seeking out underwater oil and gas. If someone has an "offshore bank account," it means they keep their money in a foreign country — probably to avoid paying taxes on it.

Definitions of offshore

adj (of winds) coming from the land

offshore winds”
inshore, onshore, seaward, shoreward
(of winds) coming from the sea toward the land

adj at some distance from the shore

offshore oil reserves”
“an offshore island”
relating to or characteristic of or occurring on or in the sea

adv away from shore; away from land

“cruising three miles offshore
on or toward the land

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