Marathon king tides 2026–27
The highest tides NOAA predicts for Marathon over the next 12 months, one per spring tide, at Vaca Key, USCG Station, Florida Bay. The biggest is 1.6 ft on Fri, Oct 30, 2026 at 3:54 AM, about 0.7 ft above a typical high tide.
Next big tide: Fri, Oct 16, 2026 at 4:48 AM, 1.4 ft.
Highest tides
| Date | Time | Height | Above a typical high | Moon |
|---|---|---|---|---|
| Fri, Oct 16, 2026 | 4:48 AM | 1.4 ft | 0.5 ft | |
| Sun, Oct 25, 2026 | 12:18 AM | 1.3 ft | 0.4 ft | 1 day before the full moon |
| Fri, Oct 30, 2026 | 3:54 AM | 1.6 ft | 0.7 ft | |
| Tue, Nov 10, 2026 | 12:06 AM | 1.4 ft | 0.5 ft | 1 day after the new moon |
| Wed, Nov 25, 2026 | 10:18 PM | 1.5 ft | 0.6 ft | 2 days after the full moon |
| Mon, Aug 30, 2027 | 12:06 PM | 1.3 ft | 0.5 ft | 1 day before the new moon |
| Mon, Sep 6, 2027 | 5:18 AM | 1.3 ft | 0.4 ft | |
| Fri, Sep 24, 2027 | 7:12 AM | 1.4 ft | 0.5 ft | |
| Mon, Oct 4, 2027 | 3:54 AM | 1.5 ft | 0.6 ft | |
| Fri, Oct 15, 2027 | 1:00 AM | 1.3 ft | 0.4 ft | on the full moon |
These are astronomical predictions. An onshore wind, heavy rain or a storm can push water a foot or more higher, and that is when king tides flood low roads, docks and marsh-front yards. Check the forecast the week before.
Lowest tides
The same spring tides drain the water lowest. Good days for shelling, walking sandbars and exploring the flats; mind the time and the incoming tide.
| Date | Time | Height | Below a typical low |
|---|---|---|---|
| Mon, Feb 1, 2027 | 3:06 AM | −0.4 ft | 0.6 ft |
| Mon, Feb 15, 2027 | 1:06 AM | −0.5 ft | 0.7 ft |
| Sun, Feb 28, 2027 | 12:00 AM | −0.5 ft | 0.7 ft |
| Sat, Mar 13, 2027 | 10:36 PM | −0.6 ft | 0.8 ft |
| Sat, Mar 27, 2027 | 11:30 PM | −0.5 ft | 0.7 ft |
| Sat, Apr 10, 2027 | 10:24 PM | −0.5 ft | 0.7 ft |
What is a king tide?
“King tide” is the everyday name for the highest tides of the year. They come with the new or full moon (spring tides) when the moon is also at its closest to Earth, and they are strongest in the months when the sun lines up too. They are entirely predictable, which is why the dates above are known a year ahead.
King tides in nearby towns
- Big Pine Key · 17 mi
- Flamingo · 31 mi
- Islamorada · 32 mi
- Key West · 45 mi
- Key Largo · 48 mi
- Homestead · 65 mi
From NOAA tide predictions for Vaca Key, USCG Station, Florida Bay. Heights are feet above mean lower low water (MLLW). Not for navigation.