TidalMap

Boston Light Tide Times

Massachusetts · Station 8444162 · Updated Aug 5, 2026

Boston Light runs a mean tidal range of about 8.8 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 8 mi away — with nearly the same tide times.

Predictedno live gauge

Next high tide 9.8 ft at 4:48 PM

Predicted

Monthly tide calendar

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

🌊 Biggest flood tides at Boston Light this month: Aug 9, Aug 10, Aug 11, Aug 12, 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 Boston Light 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:9.7L:0.2H:9.0L:0.8

2H:9.6L:0.2H:9.3L:0.6

3H:9.5L:0.2H:9.5L:0.5

4H:9.2L:0.4H:9.7L:0.5

5🌗H:8.9L:0.6H:9.8L:0.4

6🌗H:8.6L:0.8H:9.9

7🌗L:0.4H:8.4L:0.9H:10.0

8L:0.3H:8.3L:1.0H:10.1

9L:0.1H:8.4L:0.9H:10.3

10L:-0.2H:8.7L:0.6H:10.6

11L:-0.5H:9.1L:0.3H:10.8

12🌑L:-0.8H:9.5L:-0.1H:10.9

13🌑L:-0.9H:9.8L:-0.3

14🌑H:10.9L:-0.9H:10.1L:-0.3

15🌑H:10.6L:-0.7H:10.1L:-0.2

16H:10.1L:-0.3H:10.0L:0.0

17H:9.6L:0.2H:9.8L:0.4

18H:9.0L:0.8H:9.5L:0.7

19🌓H:8.4L:1.4H:9.1L:1.1

20🌓H:7.9L:1.8H:8.9

21🌓L:1.3H:7.6L:2.1H:8.7

22🌓L:1.5H:7.4L:2.2H:8.6

23L:1.4H:7.5L:2.2H:8.8

24L:1.3H:7.7L:2.0H:9.0

25L:1.0H:8.0L:1.6H:9.3

26L:0.7H:8.3L:1.3H:9.5

27🌕L:0.5H:8.7L:0.9H:9.7

28🌕L:0.3H:9.0L:0.6

29🌕H:9.8L:0.1H:9.4L:0.3

30H:9.8L:0.0H:9.7L:0.1

31H:9.7L:0.0H:10.0L:-0.1

Best fishing times (solunar)

Major and minor solunar windows for Boston Light — 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 🌗	4:54–6:54 AM 5:19–7:19 PM	10:09–12:09 AM 12:24–2:24 PM	34
Thu Aug 6 🌗	5:49–7:49 AM 6:14–8:14 PM	10:48–12:48 AM 1:43–3:43 PM	40
Fri Aug 7 🌗	6:49–8:49 AM 7:14–9:14 PM	— 3:00–5:00 PM	53
Sat Aug 8 🌘	7:53–9:53 AM 8:18–10:18 PM	11:38–1:38 AM 4:10–6:10 PM	66
Sun Aug 9 🌘	8:58–10:58 AM 9:23–11:23 PM	12:41–2:41 AM 5:09–7:09 PM	76
Mon Aug 10 🌘	10:01–12:01 PM 10:26–12:26 AM	1:54–3:54 AM 5:56–7:56 PM	85
Tue Aug 11 🌘	11:00–1:00 PM 11:25–1:25 AM	3:12–5:12 AM 6:33–8:33 PM	92

Predictions & observations: NOAA CO-OPS station 8444162. Solunar windows computed from the moon's position for this location. Times shown in the station's local time. Not for navigation.

Open Boston Light on the live chart →

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