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Johns Folly Bay, St. John Island Tide Times

Puerto Rico · Station 9751274 · Updated Sep 21, 2026

Johns Folly Bay, St. John Island runs a mean tidal range of about 0.6 ft. This month the highest water, 1.2 ft, comes on the afternoon of Sep 30, and the lowest, a -0.0 ft minus tide, on the morning of Sep 5.

Nearest gauge measuring live water level: Lameshur Bay, St. Johns Island (9751381), about 1 mi away, high and low tides here run on average about 11 min earlier.

Predictedno live gauge
Next low tide 0.3 ft at 9:18 AM
Low 0.3 ft · 9:18 AMHigh 1.0 ft · 5:54 PM
Predicted
Today's tides
Low tide9:18 AM0.3 ft
High tide5:54 PM1.0 ft

Monthly tide calendar

Flood & low finder

🌊 Biggest flood tides at Johns Folly Bay, St. John Island this month: Sep 4, Sep 5, Sep 6, Sep 7, Sep 8, Sep 28, Sep 29, Sep 30. These spring highs push water up into the grass and over the oyster rock; prime for poling into flooded marsh for tailing reds.

🔻 Negative (minus) low tides at Johns Folly Bay, St. John Island this month: Sep 5. These drain the flats and expose the oyster rock, prime for sight-fishing and clamming.

September 2026
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1L:0.3H:1.0L:0.6H:0.6
2L:0.2H:1.0
3🌗L:0.1H:1.1
4🌗L:0.0H:1.1
5🌗L:-0.0H:1.1
6🌗L:0.0H:1.2
7L:0.1H:1.2
8L:0.1H:1.1
9L:0.6H:0.6L:0.2H:1.1
10L:0.5H:0.7L:0.3H:1.0
11🌑L:0.5H:0.8L:0.4H:0.9
12🌑L:0.5H:0.9L:0.5H:0.8
13🌑L:0.4H:1.0L:0.6H:0.7
14L:0.3H:1.0L:0.6H:0.6
15L:0.3H:1.0
16L:0.2H:1.0
17L:0.2H:1.0
18🌓L:0.2H:1.0
19🌓L:0.2H:1.0
20🌓L:0.2H:1.0
21🌓L:0.3H:1.0
22L:0.3H:1.0
23L:0.6H:0.6L:0.4H:1.0
24L:0.6H:0.7L:0.5H:1.0
25🌕L:0.6H:0.9L:0.5H:0.9
26🌕L:0.5H:1.0L:0.5H:0.8
27🌕L:0.4H:1.0L:0.6H:0.7
28🌕L:0.3H:1.1L:0.6H:0.6
29L:0.2H:1.2
30L:0.1H:1.2

Best fishing times (solunar)

Major and minor solunar windows for Johns Folly Bay, St. John Island, peak feeding activity is around the moon overhead/underfoot (majors) and moonrise/moonset (minors). Score is the day's activity coefficient (0–100).

DayMajor windowsMinor windowsScore
Today 🌓7:41–9:41 PM
8:06–10:06 AM		2:01–4:01 PM
12:31–2:31 AM		67
Tue Sep 22 🌔8:27–10:27 PM
8:52–10:52 AM		2:41–4:41 PM
1:24–3:24 AM		77
Wed Sep 23 🌔9:11–11:11 PM
9:36–11:36 AM		3:18–5:18 PM
2:16–4:16 AM		86
Thu Sep 24 🌔9:54–11:54 PM
10:19–12:19 PM		3:53–5:53 PM
3:08–5:08 AM		93
Fri Sep 25 🌕10:38–12:38 AM
11:03–1:03 PM		4:28–6:28 PM
4:00–6:00 AM		96
Sat Sep 26 🌕—
—		5:04–7:04 PM
4:52–6:52 AM		97
Sun Sep 27 🌕11:23–1:23 AM
11:48–1:48 PM		5:43–7:43 PM
5:46–7:46 AM		95

Predictions & observations: NOAA CO-OPS station 9751274. Solunar windows computed from the moon's position for this location. Times shown in the station's local time. Not for navigation.

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