Main Key tide times

Barnes Sound, FLBarnes SoundNOAA 8723571Tuesday, October 20 · EDTTue Oct 20Predictions onlyChange station
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Today at Main Key the next high tide is at 9:54 PM (0.5 ft). Tomorrow's first low is at 5:11 AM.

Estimated now
0.4 ft
Near slack, turning soon
Next high
9:54 PM
In 2 h 34 min · 0.5 ft
Next low
5:11 AM
In 9 h 51 min · 0.4 ft
Tide range today
0.1 ft
Mean range 0.3 ft
Predictions only. No live gauge at this station.

Today's tide

Estimated curve between high and low timesNightHeight above MLLW
0 ft2 ftNOW 7:204:18 AMLow · 0.4 ft9:17 AMHigh · 0.5 ft4:37 PMLow · 0.3 ft9:54 PMHigh · 0.5 ft
Tide chart for Main Key, today. Low 0.4 ft at 4:18 AM, high 0.5 ft at 9:17 AM, low 0.3 ft at 4:37 PM, high 0.5 ft at 9:54 PM.

Heights and times are estimated from Miami Beach, Government Cut using NOAA offsets. Only the high and low points are official; the curve between them is drawn by us.

Today's tides

ft above MLLW
  • Low4:18 AM0.4 ft
  • High9:17 AM0.5 ft
  • Low4:37 PM0.3 ft
  • High9:54 PM0.5 ft
Tide times for Main Key
TideTimeHeight
Low4:18 AM0.4 ft
High9:17 AM0.5 ft
Low4:37 PM0.3 ft
High9:54 PM0.5 ft
Sunrise
7:23 AM
First light 7:00
Sunset
6:51 PM
Last light 7:14
Moon
69%
Waxing gibbous
Tide range
0.1 ft
Mean 0.3 ft

Best windows today

Plan the week →
  • Fishing
    7:30 to 9:00 PM

    Today's best window (7:00 to 8:00 AM) has passed. Dawn light with the incoming tide around the 9:17 AM high.

  • Tidepools & shelling
    No daylight low today

    No daylight low today. The next good one is Sunday at 7:00 AM.

  • Surfing
    Next: Wed 7:00 to 8:00 AM
    Earlier today: 11:00 AM to 2:00 PM

    Today's best window (11:00 AM to 2:00 PM) has passed.

  • Shallow boat launch
    Avoid 12:00 to 12:00 AM

    Water drops under 1.5 ft from 12:00 to 12:00 AM. Plan to be back on the trailer before then.

Plan the week

Moving water around the turn often fishes best. Local species and bait matter more than any chart.

Next 7 days

October calendar →
High and low tides for the next 7 days, heights in ft
DayTide 1Tide 2Tide 3Tide 4Range, ft
TodayTue 20L4:18a0.4H9:17a0.5L4:37p0.3H9:54p0.50.1
WedOct 21L5:11a0.4H10:18a0.5L5:31p0.3H10:45p0.50.2
ThuOct 22L5:57a0.3H11:13a0.5L6:19p0.3H11:33p0.50.2
FriOct 23L6:40a0.2H12:04p0.5L7:04p0.20.3
SatOct 24H12:17a0.5L7:21a0.1H12:51p0.6L7:48p0.20.4
SunOct 25H1:00a0.6L8:02a0.1H1:37p0.6L8:31p0.20.5
MonOct 26H1:44a0.6L8:45a0.0H2:23p0.6L9:15p0.20.6 spring tide

King tides Oct 25 to Oct 29. The year's highest tides at this station, from our scan of NOAA predictions. About king tides

Tide predictions and observations: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), station 8723571.

Nearby stations

Currents

No current prediction station nearby.

Station details

Datum
Mean lower low water
Predictions
NOAA subordinate, from Miami Beach, Government Cut
Live gauge
None
Coordinates
25.240° N, 80.400° W
Time zone
Eastern, UTC−4
Station ID
NOAA 8723571

About the tides at Main Key

Main Key has a semidiurnal tide: two highs and two lows of similar height each day, about 12 hours and 25 minutes apart. The pattern follows the reference station at Miami Beach, Government Cut. Water here rises and falls only about 0.3 ft on an average day. A strong onshore wind can push levels above the prediction. That is smaller than most Florida stations on this site. Looking a year ahead, predictions peak at 0.6 ft on September 29 and bottom out at −0.3 ft on January 23.

Tides here are worked out from the reference station at Miami Beach, Government Cut, with NOAA time and height corrections. Times are good for planning, but local wind can shift them. The nearest other station is Manatee Creek, 2 mi away, where high tide comes about 10 min later.

Predictions are based on Miami Beach, Government Cut.

Height unitsftmAdd this tide widget to your site. It's free.Week plannerPrintable October calendar

Tide predictions and water levels from NOAA CO-OPS. For planning only, not for navigation. Real water levels can differ because of wind, air pressure and river flow. Always check conditions on site.