Cornwall Tide Times

Independent tide predictions computed from Environment Agency gauge observations

Weather matters. These are astronomical predictions only. Wind and air pressure routinely shift real sea levels by 0.25 m — and much more in storms. If you are judging whether a beach, causeway or cove will cut you off, leave a wide margin and check conditions on the day. This site is not an official source and must not be used for navigation.

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This uses Environment Agency flood and river level data from the real-time data API (Beta) — Open Government Licence v3. Coastline outline from Natural Earth (public domain).

Heights are in metres above Ordnance Datum (mAOD), not chart datum, so they will not match printed tide tables. Predictions are our own harmonic analysis of gauge observations; they are independent of Admiralty/UKHO tables. Times shown in UK local time (GMT/BST).

Not an official source. Not for navigation. Do not rely on these times where an error could put you in danger.