TidalMap

Hyannis Port Tide Times

Massachusetts · Station 8447605 · Updated Aug 5, 2026

Hyannis Port runs a mean tidal range of about 3.0 ft. This month the highest water, 4.6 ft, comes on the evening of Aug 11, and the lowest, a -0.1 ft minus tide, on the morning of Aug 12.

Nearest gauge measuring live water level: Chatham Harbor, Aunt Lydias Cove (8447435), about 18 mi away — high and low tides here run on average about 16 min earlier.

Predictedno live gauge

Next high tide 3.8 ft at 5:56 PM

Predicted

Monthly tide calendar

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

🌊 Biggest flood tides at Hyannis Port this month: Aug 7, Aug 8, Aug 9, Aug 10, Aug 11, Aug 13, Aug 14, Aug 15. 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 Hyannis Port this month: Aug 11, Aug 12, Aug 13. 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:3.7L:0.4H:3.2L:0.7

2H:3.6L:0.4H:3.3L:0.6

3H:3.4L:0.5H:3.5L:0.5

4H:3.2L:0.5H:3.7L:0.4

5🌗H:3.1L:0.6H:3.8

6🌗L:0.3H:3.0L:0.6H:4.0

7🌗L:0.3H:2.9L:0.6H:4.2

8L:0.2H:2.9L:0.6H:4.3

9L:0.1H:2.9L:0.5H:4.5

10L:0.1H:3.1L:0.4H:4.5

11L:-0.0H:3.2L:0.3H:4.6

12🌑L:-0.1H:3.4L:0.3

13🌑H:4.5L:-0.1H:3.6L:0.2

14🌑H:4.4L:0.0H:3.8L:0.2

15🌑H:4.2L:0.1H:3.9L:0.3

16H:3.9L:0.3H:3.9L:0.3

17H:3.6L:0.5H:3.9L:0.4

18H:3.4L:0.7H:3.8L:0.5

19🌓H:3.1L:0.9H:3.7

20🌓L:0.7H:2.9L:1.0H:3.7

21🌓L:0.8H:2.8L:1.1H:3.6

22🌓L:0.8H:2.7L:1.1H:3.6

23L:0.8H:2.7L:1.1H:3.7

24L:0.8H:2.8L:1.1H:3.7

25L:0.7H:2.8L:1.0H:3.8

26L:0.6H:2.9L:0.8H:3.8

27🌕L:0.5H:3.1L:0.7

28🌕H:3.8L:0.5H:3.2L:0.6

29🌕H:3.7L:0.5H:3.4L:0.5

30H:3.6L:0.5H:3.6L:0.4

31H:3.5L:0.5H:3.7L:0.3

Best fishing times (solunar)

Major and minor solunar windows for Hyannis Port — 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 🌗	4:51–6:51 AM 5:16–7:16 PM	10:09–12:09 AM 12:20–2:20 PM	34
Thu Aug 6 🌗	5:47–7:47 AM 6:12–8:12 PM	10:48–12:48 AM 1:38–3:38 PM	40
Fri Aug 7 🌗	6:47–8:47 AM 7:12–9:12 PM	— 2:54–4:54 PM	53
Sat Aug 8 🌘	7:50–9:50 AM 8:15–10:15 PM	11:39–1:39 AM 4:05–6:05 PM	66
Sun Aug 9 🌘	8:55–10:55 AM 9:20–11:20 PM	12:42–2:42 AM 5:04–7:04 PM	76
Mon Aug 10 🌘	9:58–11:58 AM 10:23–12:23 AM	1:54–3:54 AM 5:51–7:51 PM	85
Tue Aug 11 🌘	10:57–12:57 PM 11:22–1:22 AM	3:12–5:12 AM 6:28–8:28 PM	92

Predictions & observations: NOAA CO-OPS station 8447605. 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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