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Grassy Key, north side, Florida Bay tide times

Florida · NOAA station 8723921 · times in local time
Tuesday, October 27: high tide 4:03 AM (1.8 ft) and 5:34 PM (1.3 ft); low tide 11:48 AM (-0.0 ft) and 11:15 PM (0.9 ft).
next high tide
4:03 AM
1.8 ft
next low tide
11:48 AM
-0.0 ft
moon
–
 

Tide chart — today, Tue, Oct 27

Heights in feet above Mean Lower Low Water (MLLW). Dots are NOAA's predicted highs and lows; the line between them is our interpolation. Shaded: night.

TideTimeHeight
High tide4:03 AM1.81 ft
Low tide11:48 AM-0.03 ft
High tide5:34 PM1.25 ft
Low tide11:15 PM0.88 ft

Grassy Key, north side, Florida Bay tide table — next 7 days

DayHigh tidesLow tides
Today
Tue, Oct 27		4:03 AM 1.8 ft5:34 PM 1.3 ft11:48 AM -0.0 ft11:15 PM 0.9 ft
Tomorrow
Wed, Oct 28		4:44 AM 1.9 ft6:25 PM 1.1 ft12:37 PM -0.1 ft11:51 PM 0.9 ft
Thu, Oct 295:29 AM 1.9 ft7:19 PM 1.1 ft1:31 PM 0.0 ft
Fri, Oct 306:21 AM 1.8 ft8:18 PM 1.0 ft12:31 AM 0.9 ft2:31 PM 0.1 ft
Sat, Oct 317:19 AM 1.7 ft9:26 PM 1.0 ft1:20 AM 1.0 ft3:39 PM 0.3 ft
Sun, Nov 17:29 AM 1.6 ft9:39 PM 1.0 ft1:25 AM 1.1 ft3:50 PM 0.5 ft
Mon, Nov 28:53 AM 1.5 ft10:43 PM 1.1 ft2:57 AM 1.1 ft4:56 PM 0.6 ft

The year at Grassy Key, north side, Florida Bay

Highest tide, next 12 months1.9 ft on October 28, 2026 at 4:44 AM
Lowest tide, next 12 months-0.7 ft on January 21, 2027 at 9:35 AM
Minus tides (below 0 ft)179 days in the next 12 months
Tide patternTwo high and two low tides a day
Typical daily range1.2 ft (30-day average)
StationNOAA 8723921 · subordinate station · 24.7717, -80.94

Grassy Key, north side, Florida Bay is a subordinate station: NOAA computes its tides from Key West with fixed time and height corrections.

Moving water at dawn and dusk —

The current runs fastest roughly halfway between a high and a low tide. Many anglers prefer those hours when they fall near sunrise or sunset. This is a rule of thumb, not a fishing forecast.

Map

Nearby tide stations

Toms Harbor Channel, Hwy. 1 bridge1.1 mi · FL Grassy Key, south side, Hawk Channel1.6 mi · FL Duck Key, Hawk Channel1.7 mi · FL Toms Harbor Cut2.2 mi · FL Conch Key, eastern end3.8 mi · FL Fat Deer Key, Florida Bay5.5 mi · FL Long Key, western end6.0 mi · FL Key Colony Beach6.1 mi · FL

All Florida tide stations →

Questions about Grassy Key, north side, Florida Bay tides

What time is high tide at Grassy Key, north side, Florida Bay today?

On Tuesday, October 27, high tide at Grassy Key, north side, Florida Bay is at 4:03 AM (1.8 ft) and 5:34 PM (1.3 ft); low tide is at 11:48 AM (-0.0 ft) and 11:15 PM (0.9 ft) (EDT, heights above MLLW). The table above lists the next 7 days.

When are the highest tides of the year at Grassy Key, north side, Florida Bay?

The highest predicted tide in the next 12 months is 1.9 ft on October 28, 2026 at 4:44 AM. The largest tides fall a day or two after a full or new moon, especially when the Moon is closest to Earth.

Are there minus tides at Grassy Key, north side, Florida Bay?

Yes — on 179 days in the next 12 months the low tide drops below 0 ft (MLLW). The lowest is -0.7 ft on January 21, 2027 at 9:35 AM. Minus tides expose the most shoreline, which is why tide-poolers look for them.

What time zone are these tide times in?

Station local time (EDT at the time this page was built), with daylight saving time applied where the area observes it — the same convention as NOAA's own tide tables.

Where does this tide data come from?

From NOAA CO-OPS, the U.S. government tide station network (tidesandcurrents.noaa.gov); the predictions are public domain. Grassy Key, north side, Florida Bay is a subordinate station: NOAA derives its times and heights from the reference station Key West with fixed corrections. The curve between highs and lows is our interpolation. This page is not for navigation.