Marathon, FL Tide Chart & Tide Times

Florida · NOAA station Key Colony Beach (1.1 mi) · updated Oct 26, 2026

Mon, Oct 26: High tide 9:54 AM (2.3 ft) and 9:34 PM (2.8 ft); low tide 3:21 AM (0.0 ft) and 3:20 PM (0.7 ft).

Tide todayHigh 9:54 AM · High 9:34 PMLow 3:21 AM · Low 3:20 PM

Today's range2.8 ft0.0 → 2.8 ft (MLLW)

WindLoading…

Sun7:27 AM – 6:47 PMFirst light 7:04 AM · Last light 7:11 PM

Wind: observed at NOAA CO-OPS station 8723970 (Vaca Key, Florida Bay), 5 mi away; forecast from the NOAA National Weather Service (api.weather.gov).

Marathon tides — next 3 days

Shaded = night · heights in feet above MLLW · local time

TodayMon, Oct 26

Low 3:21 AM 0.0 ft
High 9:54 AM 2.3 ft
Low 3:20 PM 0.7 ft
High 9:34 PM 2.8 ft

First light 7:04 AMSunrise 7:27 AMSunset 6:47 PMLast light 7:11 PM

TomorrowTue, Oct 27

Low 4:08 AM -0.1 ft
High 10:41 AM 2.2 ft
Low 4:01 PM 0.7 ft
High 10:17 PM 2.8 ft

First light 7:04 AMSunrise 7:28 AMSunset 6:46 PMLast light 7:10 PM

WednesdayWed, Oct 28

Low 4:57 AM -0.1 ft
High 11:30 AM 2.1 ft
Low 4:44 PM 0.7 ft
High 11:04 PM 2.8 ft

First light 7:05 AMSunrise 7:29 AMSunset 6:46 PMLast light 7:10 PM

ThursdayThu, Oct 29

Low 5:50 AM -0.0 ft
High 12:21 PM 2.0 ft
Low 5:32 PM 0.8 ft
High 11:56 PM 2.8 ft

First light 7:05 AMSunrise 7:29 AMSunset 6:45 PMLast light 7:09 PM

Today's tide windows

▲ Rising 3:21 AM → 9:54 AM 0.0 → 2.3 ft
▼ Falling 9:54 AM → 3:20 PM 2.3 → 0.7 ft
▲ Rising 3:20 PM → 9:34 PM 0.7 → 2.8 ft
▼ Falling 9:34 PM → 4:08 AM (next day) 2.8 → -0.1 ft

From NOAA high/low predictions for station 8723962.

This week's tide highlights

Mon, Oct 26 – Sun, Nov 1

Biggest high2.8 ftTue, Oct 27 10:17 PM

Lowest low-0.1 ftWed, Oct 28 4:57 AM

Best daylight low0.3 ftSat, Oct 31 7:49 AMtide pools & beachcombing

Plan around it: Best tide for surf fishing · Best tide for surfing

NOAA predictions for station 8723962; daylight = first to last light (civil twilight). Predictions are astronomical and don't include wind, waves, or storm surge. Not for navigation.

Best fishing times today in Marathon

Today is a fair fishing day (solunar + tide)

5/10

Full moon · 99% lit · New moon Mon, Nov 9

Major fishing times

Moon overhead12:03 am – 2:03 am
Moon underfoot12:31 pm – 2:31 pm
Near slack (low 3:20 pm)

Minor fishing times

Moonset7:23 am – 8:23 am
Sunrise≈ Moving water, rising
Moonrise6:34 pm – 7:34 pm
Sunset≈ Moving water, rising

Fishing times for the next 7 days

TodayOct 26	5/10Fair	Major 12:03 am – 2:03 am · 12:31 pm – 2:31 pm Minor 7:23 am – 8:23 am · 6:34 pm – 7:34 pm
TueOct 27	5/10Fair	Major 12:59 am – 2:59 am · 1:29 pm – 3:29 pm Minor 8:31 am – 9:31 am · 7:24 pm – 8:24 pm
WedOct 28	2/10Poor	Major 2:00 am – 4:00 am · 2:32 pm – 4:32 pm Minor 9:40 am – 10:40 am · 8:21 pm – 9:21 pm
ThuOct 29	4/10Fair	Major 3:04 am – 5:04 am · 3:36 pm – 5:36 pm Minor 10:48 am – 11:48 am · 9:25 pm – 10:25 pm
FriOct 30	5/10Fair	Major 4:09 am – 6:09 am · 4:40 pm – 6:40 pm Minor 11:50 am – 12:50 pm · 10:32 pm – 11:32 pm
SatOct 31	6/10Good	Major 5:11 am – 7:11 am · 5:40 pm – 7:40 pm Minor 12:44 pm – 1:44 pm · 11:40 pm – 12:40 am
SunNov 1	4/10Fair	Major 5:08 am – 7:08 am · 5:35 pm – 7:35 pm Minor 12:31 pm – 1:31 pm · 11:45 pm – 12:45 am

How this rating works

Solunar theory says fish feed more when the moon is overhead or underfoot (major periods, about 2 hours) and around moonrise and moonset (minor periods, about 1 hour). We score each day from 1 to 10 by checking when those periods happen, using the NOAA tide predictions for station 8723962 and the sun times for this spot:

Base	every day starts at 1	1
Sunrise / sunset	a period overlaps sunrise or sunset ±1 h: major +2, minor +1 (max 3) (Moonset × sunrise +1; Moonrise × sunset +1)	2
Tide	a NOAA high or low falls inside a period (tide change): major +2, minor +1; moving water during a major period (no high/low within 1 h of it) +1 (max 4)	0
Moon phase	within 2 days of a new or full moon +2, within 4 days +1 (today: 0.5 days)	2
Today	5, rounded	5/10

1–3 poor · 4–5 fair · 6–7 good · 8–10 excellent. Solunar times are a rule of thumb, not a guarantee: weather, water temperature and bait matter a lot. Tide changes and moving water are specific to this station, so nearby spots can score differently.

Solunar periods calculated for 24.73, -81.03 (moon times from astronomical equations, local time). Not a fishing forecast.

Marathon tide table & sun times — next 7 days

Mon, Oct 26Sun 7:27 AM – 6:47 PM	Low 3:21 AM 0.03 ft	High 9:54 AM 2.34 ft	Low 3:20 PM 0.70 ft	High 9:34 PM 2.81 ft
Tue, Oct 27Sun 7:28 AM – 6:46 PM	Low 4:08 AM -0.08 ft	High 10:41 AM 2.24 ft	Low 4:01 PM 0.71 ft	High 10:17 PM 2.85 ft
Wed, Oct 28Sun 7:29 AM – 6:46 PM	Low 4:57 AM -0.10 ft	High 11:30 AM 2.12 ft	Low 4:44 PM 0.74 ft	High 11:04 PM 2.83 ft
Thu, Oct 29Sun 7:29 AM – 6:45 PM	Low 5:50 AM -0.03 ft	High 12:21 PM 1.98 ft	Low 5:32 PM 0.79 ft	High 11:56 PM 2.77 ft
Fri, Oct 30Sun 7:30 AM – 6:44 PM	Low 6:47 AM 0.11 ft	High 1:17 PM 1.87 ft	Low 6:26 PM 0.86 ft
Sat, Oct 31Sun 7:30 AM – 6:44 PM	High 12:55 AM 2.66 ft	Low 7:49 AM 0.28 ft	High 2:18 PM 1.81 ft	Low 7:31 PM 0.93 ft
Sun, Nov 1Sun 6:31 AM – 5:43 PM	High 1:02 AM 2.53 ft	Low 7:56 AM 0.44 ft	High 2:25 PM 1.83 ft	Low 7:47 PM 0.95 ft
Mon, Nov 2Sun 6:32 AM – 5:42 PM	High 2:17 AM 2.41 ft	Low 9:02 AM 0.57 ft	High 3:33 PM 1.92 ft	Low 9:06 PM 0.90 ft

Tide times and heights (ft, MLLW) are NOAA predictions for station 8723962; first light (civil dawn), sunrise, sunset and last light (civil dusk) are calculated for Marathon with the NOAA solar equations. Times are local.

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About Marathon

Marathon is a city in Monroe County, Florida, in the middle Florida Keys.

Tide station used: Key Colony Beach, FL (NOAA 8723962, reference (harmonic) station)
Distance to station: 1.1 miles
County: Monroe County
Coordinates: 24.7323, -81.0251 (US Census Bureau 2024 Gazetteer internal point (Marathon city, GEOID 1243000))
Time zone: America/New_York

NOAA's Key Colony Beach station, on the Atlantic side, was chosen over the nearer bridge and Florida Bay stations. Tides on the Florida Bay side of the Keys are smaller and arrive at different times.

FAQ

When is high tide today in Marathon, FL?

On Mon, Oct 26, predicted high tide for Marathon (NOAA station Key Colony Beach) is at 9:54 AM (2.3 ft), 9:34 PM (2.8 ft) local time.

When is low tide today in Marathon, FL?

On Mon, Oct 26, predicted low tide for Marathon is at 3:21 AM (0.0 ft), 3:20 PM (0.7 ft) local time.

Which tide station is used for Marathon?

NOAA CO-OPS station 8723962 (Key Colony Beach, FL), a reference (harmonic) station, about 1.1 miles from the Marathon reference point. Heights are in feet above Mean Lower Low Water (MLLW).

What time is sunrise and sunset in Marathon today?

On Mon, Oct 26, first light (civil dawn) is about 7:04 AM, sunrise 7:27 AM, sunset 6:47 PM and last light (civil dusk) 7:11 PM local time (calculated).

Other beaches & towns nearby

Tide stations near Marathon

Vaca Key-Fat Deer Key Bridge, FL 0.3 mi
Fat Deer Key, Florida Bay, FL 0.5 mi
Grassy Key, South Side, Hawk Channel, FL 4.5 mi
Vaca Key, USCG Station, Florida Bay, FL 5.3 mi
Boot Key Harbor Bridge, Boot Key, FL 5.4 mi
Grassy Key, North Side, Florida Bay, FL 6.0 mi
Knight Key Channel, Knight Key, Florida Bay, FL 6.5 mi
Toms Harbor Channel, Hwy. 1 Bridge, FL 7.1 mi