Boston Tide Chart (MA)

Boston (MA) tide times, Sep 8 – Sep 16

Day	Time	Tide	Height
Tue Sep 8	3:08 AM	Low	0.2 ft (0.05 m)
	9:25 AM	High	9.3 ft (2.82 m)
	3:22 PM	Low	0.8 ft (0.24 m)
	9:41 PM	High	10.7 ft (3.25 m)
Wed Sep 9	4:06 AM	Low	-0.1 ft (-0.04 m)
	10:22 AM	High	9.7 ft (2.97 m)
	4:21 PM	Low	0.3 ft (0.11 m)
	10:38 PM	High	10.9 ft (3.31 m)
Thu Sep 10	4:58 AM	Low	-0.4 ft (-0.11 m)
	11:12 AM	High	10.2 ft (3.11 m)
	5:15 PM	Low	-0.0 ft (-0.01 m)
	11:31 PM	High	10.9 ft (3.33 m)
Fri Sep 11	5:45 AM	Low	-0.4 ft (-0.13 m)
	11:59 AM	High	10.5 ft (3.20 m)
	6:05 PM	Low	-0.3 ft (-0.09 m)
Sat Sep 12	12:20 AM	High	10.8 ft (3.29 m)
	6:30 AM	Low	-0.3 ft (-0.10 m)
	12:44 PM	High	10.6 ft (3.24 m)
	6:53 PM	Low	-0.4 ft (-0.11 m)
Sun Sep 13	1:07 AM	High	10.5 ft (3.21 m)
	7:14 AM	Low	-0.0 ft (-0.01 m)
	1:26 PM	High	10.6 ft (3.24 m)
	7:39 PM	Low	-0.2 ft (-0.07 m)
Mon Sep 14	1:53 AM	High	10.1 ft (3.09 m)
	7:56 AM	Low	0.4 ft (0.12 m)
	2:08 PM	High	10.4 ft (3.18 m)
	8:24 PM	Low	0.0 ft (0.01 m)
Tue Sep 15	2:38 AM	High	9.6 ft (2.94 m)
	8:39 AM	Low	0.9 ft (0.27 m)
	2:51 PM	High	10.2 ft (3.10 m)
	9:10 PM	Low	0.4 ft (0.14 m)
Wed Sep 16	3:24 AM	High	9.1 ft (2.78 m)
	9:23 AM	Low	1.4 ft (0.43 m)
	3:35 PM	High	9.8 ft (2.99 m)
	9:58 PM	Low	0.9 ft (0.28 m)

Boston is semidiurnal — paired highs (9.3 and 10.7 ft today) and paired lows of similar size. This is a big-tide station: an average swing this week moves 10.1 ft, so the water line, current and structure change dramatically through a single cycle. A 11.4 ft swing — Boston's biggest this table — runs from the 11:31 PM high on Thu Sep 10 into the next low. Boston tops out at 10.9 ft (Thu Sep 10 11:31 PM) and bottoms at -0.4 ft (Fri Sep 11 5:45 AM).

Moving-water windows — Boston

Boston mid-swing times below mark predicted peak flow on its 10.1 ft average cycle (why moving water matters):

• Tue Sep 8: 6:16 AM — 9.1 ft flood · 12:23 PM — 8.5 ft ebb · 6:31 PM — 9.9 ft flood
• Wed Sep 9: 12:53 AM — 10.8 ft ebb · 7:14 AM — 9.9 ft flood · 1:21 PM — 9.4 ft ebb · 7:29 PM — 10.5 ft flood

Fishing near Boston

• Cape Ann Massachusetts fishing forecastscore 81 · 45 km
• Gloucester Stellwagen fishing forecastscore 61 · 58 km

Tide charts near Boston

• Duxbury tide chart~47 km
• Plymouth tide chart~54 km
• Hampton tide chart~63 km

Boston numbers: NOAA CO-OPS #8443970 (Boston), 0.8 km off Boston center; this open-water pick beat 14 closer-in candidates. On a coast that swings 10.1 ft, storm surge stacked on the 10.9 ft high is a real hazard at Boston — predictions are astronomical only. All Boston times station-local, refreshed 2026-09-08.