Georgia Coast
St. Marys Tide Chart
High and low tide times for the St. Marys River & Cumberland Sound, predicted by NOAA at St. Marys.
Today’s tides
Tuesday, August 18- High tide1:38 AM 5.6 ft
- Low tide7:42 AM 0.6 ft
- High tide2:20 PM 6.0 ft
- Low tide8:33 PM 1.2 ft
Today’s range is 5.4 ft.
See the live tide curve →St. Marys tide times this week
| Day | High and low tides |
|---|---|
| Today |
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| Wednesday, Aug 19 |
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| Thursday, Aug 20 |
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| Friday, Aug 21 |
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| Saturday, Aug 22 |
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| Sunday, Aug 23 |
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| Monday, Aug 24 |
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Reading the tide at St. Marys
These times come from the NOAA CO-OPS station at St. Marys, measured against mean lower low water (MLLW) — the datum every US chart uses, so a 1.5 ft prediction means a foot and a half above the average lowest tide, not above the bottom. Wind and pressure shift the real water level either side of the prediction: a hard onshore blow stacks water up and a strong offshore wind can pull a low tide well below what the table says.
Local tip: Time the tide and the ferry both. Reds work the grass at the top of the flood and stack at the creek mouths on the fall, and with this much range a wrong guess leaves you either aground or a long walk from the water.
For fishing, the times in the table matter less than what happens between them. Water moving is what turns the bite on, and the strongest flow is roughly midway between a high and a low — so the two hours either side of that midpoint usually beat slack water at either end, particularly around redfish and spotted seatrout.
St. Marys tide questions
- What time is high tide at St. Marys today?
- High tide at St. Marys is at 1:38 AM (5.6 ft) and 2:20 PM (6.0 ft), predicted by NOAA at St. Marys. Wind can shift the actual water level either side of the prediction.
- What time is low tide at St. Marys today?
- Low tide at St. Marys is at 7:42 AM (0.6 ft) and 8:33 PM (1.2 ft). A strong offshore wind can pull the water lower than predicted, which matters on shallow flats and at boat ramps.
- How big is the tide at St. Marys?
- Today's range at St. Marys is about 5.4 ft. Florida's Gulf coast runs a moderate range that varies a lot by latitude — roughly two feet through the Sarasota and Charlotte Harbor beaches, building to four or five up the Nature Coast and into the Big Bend. Either way the range grows around the new and full moon — those spring tides move noticeably more water.
- Which tide is best for fishing St. Marys?
- Moving water beats slack water almost everywhere. The strongest current runs roughly midway between a high and a low, so plan the two hours either side of that rather than the exact turn. First and last light overlapping a moving tide is the classic window.
Tide charts nearby
Predictions from NOAA CO-OPS station 8679964 (St. Marys), datum MLLW, times in Eastern. Salty Forecast is a free hyperlocal weather app for anglers. Predictions are not observations — never use them for navigation or safety-of-life decisions.