Boston Tide Chart (MA)

When is high tide in Boston today?

Sat Oct 31: 3:39 AM (9.4 ft) and 3:50 PM (10.8 ft).

When is low tide in Boston today?

Sat Oct 31: 9:37 AM (0.8 ft) and 10:23 PM (-0.1 ft).

Boston (MA) tide times, Oct 31 – Nov 7

Day	Time	Tide	Height
Sat Oct 31	3:39 AM	High	9.4 ft (2.86 m)
	9:37 AM	Low	0.8 ft (0.25 m)
	3:50 PM	High	10.8 ft (3.28 m)
	10:23 PM	Low	-0.1 ft (-0.04 m)
Sun Nov 1	3:41 AM	High	9.2 ft (2.80 m)
	9:39 AM	Low	1.1 ft (0.34 m)
	3:55 PM	High	10.3 ft (3.14 m)
	10:26 PM	Low	0.2 ft (0.06 m)
Mon Nov 2	4:47 AM	High	9.1 ft (2.78 m)
	10:46 AM	Low	1.3 ft (0.39 m)
	5:03 PM	High	10.0 ft (3.03 m)
	11:29 PM	Low	0.4 ft (0.13 m)
Tue Nov 3	5:53 AM	High	9.2 ft (2.82 m)
	11:53 AM	Low	1.2 ft (0.37 m)
	6:11 PM	High	9.7 ft (2.97 m)
Wed Nov 4	12:31 AM	Low	0.5 ft (0.16 m)
	6:55 AM	High	9.5 ft (2.90 m)
	12:59 PM	Low	1.0 ft (0.31 m)
	7:18 PM	High	9.6 ft (2.94 m)
Thu Nov 5	1:30 AM	Low	0.6 ft (0.18 m)
	7:53 AM	High	9.9 ft (3.01 m)
	2:01 PM	Low	0.7 ft (0.20 m)
	8:19 PM	High	9.6 ft (2.94 m)
Fri Nov 6	2:24 AM	Low	0.6 ft (0.18 m)
	8:44 AM	High	10.2 ft (3.10 m)
	2:57 PM	Low	0.3 ft (0.09 m)
	9:13 PM	High	9.6 ft (2.94 m)
Sat Nov 7	3:13 AM	Low	0.6 ft (0.19 m)
	9:29 AM	High	10.4 ft (3.17 m)
	3:46 PM	Low	0.0 ft (0.01 m)
	10:00 PM	High	9.6 ft (2.92 m)

Boston is semidiurnal — paired highs (9.4 and 10.8 ft today) and paired lows of similar size. This is a big-tide station: an average swing this week moves 9.2 ft, so the water line, current and structure change dramatically through a single cycle. A 10.9 ft swing — Boston's biggest this table — runs from the 3:50 PM high on Sat Oct 31 into the next low. Boston tops out at 10.8 ft (Sat Oct 31 3:50 PM) and bottoms at -0.1 ft (Sat Oct 31 10:23 PM).

Moving-water windows — Boston

Boston mid-swing times below mark predicted peak flow on its 9.2 ft average cycle (why moving water matters):

• Sat Oct 31: 6:38 AM — 8.6 ft ebb · 12:43 PM — 9.9 ft flood · 7:06 PM — 10.9 ft ebb
• Sun Nov 1: 1:02 AM — 9.3 ft flood · 6:40 AM — 8.0 ft ebb · 12:47 PM — 9.2 ft flood · 7:10 PM — 10.1 ft ebb

Fishing near Boston

• Cape Ann Massachusetts fishing forecastscore 92 · 45 km
• Gloucester Stellwagen fishing forecastscore 58 · 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 9.2 ft, storm surge stacked on the 10.8 ft high is a real hazard at Boston — predictions are astronomical only. All Boston times station-local, refreshed 2026-10-30.