Boston Tide Chart (MA)

Boston (MA) tide times, Sep 14 – Sep 22

Day	Time	Tide	Height
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)
Thu Sep 17	4:13 AM	High	8.6 ft (2.63 m)
	10:10 AM	Low	1.9 ft (0.57 m)
	4:23 PM	High	9.4 ft (2.87 m)
	10:51 PM	Low	1.3 ft (0.41 m)
Fri Sep 18	5:06 AM	High	8.2 ft (2.50 m)
	11:01 AM	Low	2.3 ft (0.69 m)
	5:16 PM	High	9.1 ft (2.78 m)
	11:46 PM	Low	1.7 ft (0.51 m)
Sat Sep 19	6:03 AM	High	7.9 ft (2.41 m)
	11:56 AM	Low	2.5 ft (0.76 m)
	6:13 PM	High	8.9 ft (2.73 m)
Sun Sep 20	12:44 AM	Low	1.8 ft (0.55 m)
	7:01 AM	High	7.8 ft (2.39 m)
	12:53 PM	Low	2.5 ft (0.77 m)
	7:11 PM	High	8.9 ft (2.72 m)
Mon Sep 21	1:40 AM	Low	1.8 ft (0.54 m)
	7:59 AM	High	8.0 ft (2.43 m)
	1:49 PM	Low	2.4 ft (0.73 m)
	8:08 PM	High	9.1 ft (2.76 m)
Tue Sep 22	2:34 AM	Low	1.6 ft (0.48 m)
	8:52 AM	High	8.3 ft (2.53 m)
	2:44 PM	Low	2.1 ft (0.63 m)
	9:01 PM	High	9.3 ft (2.84 m)

Boston is semidiurnal — paired highs (10.1 and 10.4 ft today) and paired lows of similar size. This is a big-tide station: an average swing this week moves 7.5 ft, so the water line, current and structure change dramatically through a single cycle. A 10.4 ft swing — Boston's biggest this table — runs from the 2:08 PM high on Mon Sep 14 into the next low. Boston tops out at 10.4 ft (Mon Sep 14 2:08 PM) and bottoms at 0.0 ft (Mon Sep 14 8:24 PM).

Moving-water windows — Boston

Boston mid-swing times below mark predicted peak flow on its 7.5 ft average cycle (why moving water matters):

• Mon Sep 14: 4:54 AM — 9.8 ft ebb · 11:02 AM — 10.1 ft flood · 5:16 PM — 10.4 ft ebb · 11:31 PM — 9.6 ft flood
• Tue Sep 15: 5:38 AM — 8.8 ft ebb · 11:45 AM — 9.3 ft flood · 6:00 PM — 9.7 ft ebb

Fishing near Boston

• Cape Ann Massachusetts fishing forecastscore 78 · 45 km
• Gloucester Stellwagen fishing forecastscore 62 · 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 7.5 ft, storm surge stacked on the 10.4 ft high is a real hazard at Boston — predictions are astronomical only. All Boston times station-local, refreshed 2026-09-14.