TidalMap

Gloucester Harbor Tide Times

Massachusetts · Station 8441841 · Updated Aug 5, 2026

Gloucester Harbor runs a mean tidal range of about 8.5 ft. This month the highest water, 10.9 ft, comes on the evening of Aug 12, and the lowest, a -0.9 ft minus tide, on the morning of Aug 13.

Nearest gauge measuring live water level: Boston (8443970), about 27 mi away — with nearly the same tide times.

Predictedno live gauge

Next high tide 9.5 ft at 4:49 PM

Predicted

Monthly tide calendar

Flood & low finder Flood tide ≥ ft Low tide ≤ ft

🌊 Biggest flood tides at Gloucester Harbor this month: Aug 9, Aug 10, Aug 11, Aug 12, Aug 14, Aug 15, Aug 16. 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 Gloucester Harbor this month: Aug 10, Aug 11, Aug 12, Aug 13, Aug 14, Aug 15, Aug 16, Aug 31. These drain the flats and expose the oyster rock — prime for sight-fishing and clamming.

August 2026

Sun

Mon

Tue

Wed

Thu

Fri

Sat

1H:9.3L:0.3H:8.6L:0.9

2H:9.3L:0.3H:8.9L:0.7

3H:9.2L:0.3H:9.2L:0.6

4H:9.0L:0.5H:9.4L:0.5

5🌗H:8.7L:0.7H:9.5L:0.4

6🌗H:8.4L:0.9H:9.6

7🌗L:0.4H:8.2L:1.0H:9.7

8L:0.2H:8.1L:1.1H:9.9

9L:0.0H:8.2L:0.9H:10.2

10L:-0.3H:8.5L:0.6H:10.5

11L:-0.6H:8.9L:0.3H:10.8

12🌑L:-0.8H:9.3L:-0.0H:10.9

13🌑L:-0.9H:9.6L:-0.3

14🌑H:10.8L:-0.9H:9.9L:-0.4

15🌑H:10.5L:-0.7H:9.9L:-0.3

16H:10.1L:-0.4H:9.9L:-0.1

17H:9.5L:0.1H:9.7L:0.2

18H:8.9L:0.6H:9.4L:0.6

19🌓H:8.3L:1.2H:9.0L:0.9

20🌓H:7.8L:1.6H:8.7

21🌓L:1.2H:7.5L:2.0H:8.5

22🌓L:1.4H:7.3L:2.2H:8.5

23L:1.4H:7.3L:2.2H:8.5

24L:1.3H:7.4L:2.0H:8.7

25L:1.1H:7.6L:1.8H:8.9

26L:0.9H:7.9L:1.5H:9.1

27🌕L:0.7H:8.2L:1.2H:9.3

28🌕L:0.5H:8.6L:0.8

29🌕H:9.4L:0.3H:9.0L:0.5

30H:9.5L:0.2H:9.3L:0.2

31H:9.4L:0.2H:9.6L:-0.0

Best fishing times (solunar)

Major and minor solunar windows for Gloucester Harbor — peak feeding activity is around the moon overhead/underfoot (majors) and moonrise/moonset (minors). Score is the day's activity coefficient (0–100).

Day	Major windows	Minor windows	Score
Today 🌗	4:53–6:53 AM 5:18–7:18 PM	10:07–12:07 AM 12:24–2:24 PM	34
Thu Aug 6 🌗	5:48–7:48 AM 6:13–8:13 PM	10:46–12:46 AM 1:43–3:43 PM	40
Fri Aug 7 🌗	6:48–8:48 AM 7:13–9:13 PM	— 3:00–5:00 PM	53
Sat Aug 8 🌘	7:52–9:52 AM 8:17–10:17 PM	11:36–1:36 AM 4:11–6:11 PM	66
Sun Aug 9 🌘	8:57–10:57 AM 9:22–11:22 PM	12:39–2:39 AM 5:10–7:10 PM	76
Mon Aug 10 🌘	10:00–12:00 PM 10:25–12:25 AM	1:52–3:52 AM 5:56–7:56 PM	85
Tue Aug 11 🌘	10:59–12:59 PM 11:24–1:24 AM	3:10–5:10 AM 6:33–8:33 PM	92

Predictions & observations: NOAA CO-OPS station 8441841. 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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