TidalMap

Monument Beach Tide Times

Massachusetts · Station 8447355 · Updated Aug 5, 2026

Monument Beach runs a mean tidal range of about 3.9 ft. This month the highest water, 5.4 ft, comes on the evening of Aug 12, and the lowest, a -0.2 ft minus tide, on the afternoon of Aug 12.

Nearest gauge measuring live water level: Oceanographic Institution (8447930), about 14 mi away — high and low tides here run on average about 48 min earlier.

Predictedno live gauge

Next low tide 0.8 ft at 7:34 PM

Predicted

Monthly tide calendar

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

🌊 Biggest flood tides at Monument Beach this month: Aug 9, Aug 10, Aug 11, Aug 12, Aug 13, 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 Monument Beach this month: Aug 11, Aug 12, Aug 13, Aug 14, Aug 15, Aug 29, Aug 30, 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

1L:0.1H:4.2L:0.3H:4.3

2L:0.1H:4.2L:0.4H:4.1

3L:0.1H:4.3L:0.5

4H:3.9L:0.1H:4.4L:0.6

5🌗H:3.8L:0.2H:4.4L:0.8

6🌗H:3.7L:0.3H:4.5L:0.9

7🌗H:3.6L:0.4H:4.5L:0.8

8H:3.6L:0.4H:4.6L:0.6

9H:3.8L:0.2H:4.9

10L:0.4H:4.2L:0.0H:5.1

11L:0.2H:4.6L:-0.1H:5.3

12🌑L:0.0H:4.9L:-0.2H:5.4

13🌑L:-0.1H:5.1L:-0.2H:5.3

14🌑L:-0.1H:5.2L:-0.1H:5.0

15🌑L:-0.1H:5.2L:0.1H:4.7

16L:0.0H:5.0L:0.4H:4.3

17L:0.2H:4.7L:0.6

18H:3.9L:0.5H:4.4L:0.9

19🌓H:3.5L:0.7H:4.1L:1.2

20🌓H:3.3L:0.9H:3.8L:1.3

21🌓H:3.1L:1.1H:3.6L:1.3

22🌓H:3.0L:1.1H:3.6L:1.1

23H:3.1L:1.0H:3.7

24L:0.9H:3.3L:0.8H:3.9

25L:0.7H:3.6L:0.6H:4.1

26L:0.5H:3.8L:0.4H:4.3

27🌕L:0.3H:4.1L:0.2H:4.4

28🌕L:0.1H:4.4L:0.1H:4.5

29🌕L:-0.0H:4.5L:0.1H:4.5

30L:-0.1H:4.7L:0.1H:4.4

31L:-0.1H:4.7L:0.2H:4.2

Best fishing times (solunar)

Major and minor solunar windows for Monument Beach — 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	10:10–12:10 AM 12:22–2:22 PM	34
Thu Aug 6 🌗	5:48–7:48 AM 6:13–8:13 PM	10:49–12:49 AM 1:39–3:39 PM	40
Fri Aug 7 🌗	6:48–8:48 AM 7:13–9:13 PM	— 2:56–4:56 PM	53
Sat Aug 8 🌘	7:52–9:52 AM 8:17–10:17 PM	11:40–1:40 AM 4:06–6:06 PM	66
Sun Aug 9 🌘	8:56–10:56 AM 9:21–11:21 PM	12:43–2:43 AM 5:06–7:06 PM	76
Mon Aug 10 🌘	9:59–11:59 AM 10:24–12:24 AM	1:55–3:55 AM 5:53–7:53 PM	85
Tue Aug 11 🌘	10:58–12:58 PM 11:23–1:23 AM	3:13–5:13 AM 6:30–8:30 PM	92

Predictions & observations: NOAA CO-OPS station 8447355. Solunar windows computed from the moon's position for this location. Times shown in the station's local time. Not for navigation.

Open Monument Beach on the live chart →

Set your own flood/low lines, moon & solunar, weather and live tides in the app — start a free TidalMap trial.