Portland Tide Chart (ME)

Portland (ME) tide times, Sep 14 – Sep 22

Day	Time	Tide	Height
Mon Sep 14	1:43 AM	High	9.8 ft (3.00 m)
	7:45 AM	Low	0.2 ft (0.06 m)
	1:58 PM	High	10.1 ft (3.08 m)
	8:14 PM	Low	-0.1 ft (-0.03 m)
Tue Sep 15	2:28 AM	High	9.3 ft (2.84 m)
	8:26 AM	Low	0.7 ft (0.22 m)
	2:39 PM	High	9.8 ft (2.98 m)
	9:00 PM	Low	0.3 ft (0.09 m)
Wed Sep 16	3:14 AM	High	8.8 ft (2.68 m)
	9:09 AM	Low	1.2 ft (0.37 m)
	3:24 PM	High	9.4 ft (2.87 m)
	9:49 PM	Low	0.7 ft (0.23 m)
Thu Sep 17	4:04 AM	High	8.3 ft (2.52 m)
	9:56 AM	Low	1.7 ft (0.52 m)
	4:13 PM	High	9.0 ft (2.75 m)
	10:41 PM	Low	1.2 ft (0.35 m)
Fri Sep 18	4:59 AM	High	7.9 ft (2.40 m)
	10:48 AM	Low	2.1 ft (0.63 m)
	5:07 PM	High	8.7 ft (2.66 m)
	11:38 PM	Low	1.5 ft (0.45 m)
Sat Sep 19	5:56 AM	High	7.6 ft (2.31 m)
	11:44 AM	Low	2.3 ft (0.70 m)
	6:05 PM	High	8.5 ft (2.60 m)
Sun Sep 20	12:39 AM	Low	1.6 ft (0.50 m)
	6:56 AM	High	7.5 ft (2.29 m)
	12:44 PM	Low	2.3 ft (0.71 m)
	7:06 PM	High	8.5 ft (2.60 m)
Mon Sep 21	1:40 AM	Low	1.6 ft (0.48 m)
	7:55 AM	High	7.6 ft (2.33 m)
	1:45 PM	Low	2.2 ft (0.67 m)
	8:04 PM	High	8.7 ft (2.66 m)
Tue Sep 22	2:35 AM	Low	1.3 ft (0.41 m)
	8:47 AM	High	8.0 ft (2.42 m)
	2:41 PM	Low	1.9 ft (0.57 m)
	8:56 PM	High	9.0 ft (2.75 m)

Portland is semidiurnal — paired highs (9.8 and 10.1 ft today) and paired lows of similar size. This is a big-tide station: an average swing this week moves 7.3 ft, so the water line, current and structure change dramatically through a single cycle. A 10.2 ft swing — Portland's biggest this table — runs from the 1:58 PM high on Mon Sep 14 into the next low. Portland tops out at 10.1 ft (Mon Sep 14 1:58 PM) and bottoms at -0.1 ft (Mon Sep 14 8:14 PM).

Moving-water windows — Portland

Portland mid-swing times below mark predicted peak flow on its 7.3 ft average cycle (why moving water matters):

• Mon Sep 14: 4:44 AM — 9.6 ft ebb · 10:51 AM — 9.9 ft flood · 5:06 PM — 10.2 ft ebb · 11:21 PM — 9.4 ft flood
• Tue Sep 15: 5:27 AM — 8.6 ft ebb · 11:32 AM — 9.1 ft flood · 5:49 PM — 9.5 ft ebb

Tide charts near Portland

• Wells tide chart~46 km
• Hampton tide chart~97 km
• Boston tide chart~159 km

Portland numbers: NOAA CO-OPS #8418150 (Portland), 1.2 km off Portland center; this open-water pick beat 17 closer-in candidates. On a coast that swings 7.3 ft, storm surge stacked on the 10.1 ft high is a real hazard at Portland — predictions are astronomical only. All Portland times station-local, refreshed 2026-09-14.