2020 OIB Tide Chart

While we take a lot of care to make these tide charts as accurate as possible, we do not warrant the accuracy, completeness or fitness for a particular purpose of any tide information offered through this service. Under no circumstances shall we be liable to you or any other person for any indirect, special, incidental or consequential damages arising from the use of this service.

NOT FOR NAVIGATION – This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Both the author and the website provider assume no liability for damages arising from use of these predictions. They are not certified to be correct, and they do not incorporate the effects of tropical storms, El Niño, seismic events, continental drift, or changes in global sea level.Tides are when sea level rises and falls due to the combined effects of forces of gravity exerted by the Moon and the Sun and also the rotation of the Earth. The Ocean Isle Beach area experiences four tides a day, two high and two low each day.While tides are usually the largest source of short-term sea-level fluctuations, sea levels are also subject to forces such as wind and barometric pressure changes, resulting in storm surges, especially in shallow seas and near coasts.

Tide changes proceed over several stages:

• Sea level rises over several hours, covering the inter-tidal zone; flood tide.
• The water rises to its highest level, reaching high tide.
• Sea level falls over several hours, revealing the inter-tidal zone; ebb tide.
• The water stops falling, reaching low tide. Tides produce currents known as tidal streams. When a tidal current ceases it is called slack water or a slack tide. Then the tide reverses direction and is said to be turning. Slack water normally happens near high water and low water. But in some locations the moments of slack tide differ quite a lot from those of high and low water.

Tides are mostly semi-diurnal (meaning two high waters and two low waters each day), or diurnal (meaning one tidal cycle per day). The two high tides on a given day are normally not the same height – these are the higher high water and the lower high water in tide tables. The two low waters each day are the higher low water and the lower low water.



While we take a lot of care to make these tide charts as accurate as possible, we do not warrant the accuracy, completeness, or fitness for a particular purpose of any tide information offered through this service. Under no circumstances shall we be liable to you or any other person for any indirect, special, incidental or consequential damages arising from the use of this service. NOT FOR NAVIGATION - This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Both the author and the website provider assume no liability for damages arising from use of these predictions. They are not certified to be correct, and they do not incorporate the effects of tropical storms, El Niño, seismic events, continental drift or changes in global sea level. Tides are when sea level rises and falls due to the combined effects of forces of gravity exerted by the Moon and the Sun and also the rotation of the Earth.The Ocean Isle Beach area experiences four tides a day, two high and two low each day. While tides are usually the largest source of short-term sea-level fluctuations, sea levels are also subject to forces such as wind and barometric pressure changes, resulting in storm surges, especially in shallow seas and near coasts. Tide changes proceed over several stages: • Sea level rises over several hours, covering the inter-tidal zone; flood tide. • The water rises to its highest level, reaching high tide. • Sea level falls over several hours, revealing the inter-tidal zone; ebb tide. • The water stops falling, reaching low tide. Tides produce currents known as tidal streams. When a tidal current ceases it is called slack water or a slack tide. Then the tide reverses direction and is said to be turning. Slack water normally happens near high water and low water. But in some locations the moments of slack tide differ quite a lot from those of high and low water. Tides are mostly semi-diurnal (meaning two high waters & two low waters each day), or diurnal (meaning one tidal cycle per day). The two high tides on a given day are normally not the same height – these are the higher high water and the lower high water in tide tables. The two low waters each day are the higher low water and the lower low water.