Cow Island, Casco Bay, Maine Tide Times

Previous Tide: Low

March 21, 2023, 5:50pm


Current Tide: Rising

March 21, 2023, 11:06pm


Next Tide: High

March 22, 2023, 12:03am


* Estimate based on the rule of twelfths.

Tide Chart and Curves for Cow Island, Casco Bay, Maine

This tide graph shows the tidal curves and height above chart datum for the next 7 days.

Cow Island, Casco Bay, Maine Tide Times for Tuesday March 21, 2023

Type Time Height
Low 05:20 -1.4m
High 11:35 2.3m
Low 17:50 -1.5m

Upcoming High/Low Tides for Cow Island, Casco Bay, Maine

00h 57m until the next high tide

07h 07m until the next low tide

Location Map for Cow Island, Casco Bay, Maine

Locations Near Cow Island, Casco Bay, Maine

March 2023 Tide Table for Cow Island, Casco Bay, Maine

Low Tide High Tide
Day Time Height Time Height Time Height Time Height
Mar 1 - - 12:52pm -0.6m 6:20am 1.5m 7:06pm 1.1m
Mar 2 12:56am -0.4m 1:46pm -0.7m 7:16am 1.5m 8:00pm 1.2m
Mar 3 1:50am -0.4m 2:36pm -0.8m 8:08am 1.5m 8:48pm 1.3m
Mar 4 2:41am -0.5m 3:22pm -0.9m 8:57am 1.6m 9:33pm 1.4m
Mar 5 3:28am -0.7m 4:04pm -1.0m 9:42am 1.7m 10:15pm 1.5m
Mar 6 4:13am -0.8m 4:45pm -1.0m 10:26am 1.8m 10:55pm 1.6m
Mar 7 4:55am -0.9m 5:23pm -1.0m 11:08am 1.8m 11:33pm 1.7m
Mar 8 5:36am -0.9m 5:59pm -1.0m 11:48am 1.8m - -
Mar 9 6:16am -0.9m 6:34pm -0.9m 12:09am 1.7m 12:26pm 1.7m
Mar 10 6:54am -0.9m 7:08pm -0.8m 12:44am 1.7m 1:03pm 1.6m
Mar 11 7:32am -0.9m 7:43pm -0.8m 1:19am 1.7m 1:41pm 1.5m
Mar 12 9:12am -0.9m 9:20pm -0.7m 1:55am 1.7m 3:22pm 1.4m
Mar 13 9:58am -0.8m 10:04pm -0.6m 3:35am 1.7m 4:09pm 1.3m
Mar 14 10:51am -0.8m 10:58pm -0.6m 4:23am 1.7m 5:04pm 1.3m
Mar 15 11:52am -0.8m - - 5:20am 1.7m 6:07pm 1.3m
Mar 16 12:01am -0.6m 12:59pm -0.9m 6:25am 1.7m 7:15pm 1.4m
Mar 17 1:11am -0.7m 2:06pm -1.1m 7:33am 1.8m 8:22pm 1.5m
Mar 18 2:20am -0.8m 3:09pm -1.2m 8:40am 2.0m 9:24pm 1.7m
Mar 19 3:25am -1.0m 4:06pm -1.4m 9:42am 2.2m 10:20pm 1.9m
Mar 20 4:25am -1.2m 5:00pm -1.5m 10:40am 2.3m 11:13pm 2.1m
Mar 21 5:20am -1.4m 5:50pm -1.5m 11:35am 2.3m - -
Mar 22 6:13am -1.5m 6:38pm -1.5m 12:03am 2.3m 12:27pm 2.3m
Mar 23 7:04am -1.5m 7:25pm -1.4m 12:51am 2.3m 1:18pm 2.2m
Mar 24 7:54am -1.5m 8:10pm -1.2m 1:38am 2.2m 2:07pm 2.0m
Mar 25 8:42am -1.3m 8:56pm -1.0m 2:24am 2.1m 2:56pm 1.8m
Mar 26 9:32am -1.1m 9:42pm -0.7m 3:10am 2.0m 3:46pm 1.6m
Mar 27 10:22am -0.9m 10:30pm -0.5m 3:57am 1.8m 4:37pm 1.4m
Mar 28 11:15am -0.8m 11:23pm -0.4m 4:47am 1.6m 5:32pm 1.2m
Mar 29 - - 12:12pm -0.7m 5:42am 1.5m 6:31pm 1.1m
Mar 30 12:22am -0.3m 1:12pm -0.6m 6:41am 1.4m 7:30pm 1.1m
Mar 31 1:23am -0.4m 2:09pm -0.7m 7:40am 1.4m 8:25pm 1.2m

The data and charts above provide the tide time predictions for Cow Island, Casco Bay, Maine for March 2023, with extra details provided for today, Tuesday March 21, 2023.

What are Tides?

The tides are very long waves that move across our oceans, and they are caused by the gravitational pull from the moon and, to a lesser extent, the sun.

When the highest point of the wave (also known as a crest) reaches a coastline, the coast experiences what we call a high tide. At the lowest point (also known as a trough) reaches the coast, we experience a low tide.

Tidal forces of the moon in the open ocean will form as bulges of water that face the moon, but around land mass and coast lines, the water is able to spread out onto land, which creates the tides.

Earth's tides change based on the gravitational pull of the moon as it orbits us. The gravitational pull of the moon is strongest on whichever side of the Earth is facing it, annd gravity pulls the oceans towards the moon, resulting in a high tide.

On the opposite side of Earth, the bulge is caused by inertia. The water moving away from the moon is able to result the gravitational forces trying to pull it in the opposition direction because the gravitational pull is weaker on the far side of Earth. Inertia wins, and this caused the ocean to bulge out and create a high tide.

As the Earth spins, different locations on the planet will face the moon, and this rotation is what allows the tides to cycle around the planet.

Types of Tides

There are two types, or extremes, of the tide. These are called the spring tide (also known as the King tide) and the neap tide. These tide types occur twice every month.

Neap Tides

When we experience a low tide, the Moon is facing the Earth at a right angle to the Sun. This means that the gravitational pull of the Moon and Sun actually work against each other. We call these tides neap tides, and it's when the difference between high and low tide is at its lowest.

A neap tide happens between two spring tides, twice a month when the first and last quarter Moon appears.

Spring Tides

When we experience a high tide, the Earth, Moon, and Sun are in alignment, and this creats a strong gravitational pull. A spring tide is when the high and low tide difference is at it's most extreme, the highest and the lowest tides of the month.

Tide Predictions for Cow Island, Casco Bay, Maine

Our tide prediction model for Cow Island, Casco Bay, Maine uses harmonic constants and the nearest available coordinates along with the Lowest Astronomical Tide (LAT) to define the chart datum.

Tide times and heights may not be 100% accurate and they also do not account for local weather conditions. We built this tool out of a love for tides and astronomical calculations but it is not intended to be used for navigation or any purpose where you would need to rely on the data being accurate.

If there are any errors or problems you find with the tide data for Cow Island, Casco Bay, Maine (or any other tidal station) please let us know.