Tides Today & Tomorrow in Portland, ME

TIDE TIMES for Monday, September 21, 2026
The tide is currently falling in Portland, ME.

Next low tide (tomorrow) : in 6h 08m at 2:35 am (1.3 ft)
Next high tide (tomorrow) : 8:47 am (8.0 ft)
Sunset today : 6:40 pm
Sunrise tomorrow : 6:27 am
Moon phase : Waxing Gibbous (75% illuminated)
Tide Station Location : Station #8418150
Common Questions About Tides

Featured Local Businesses

Hamilton Marine - Portland

Sunset, calm water and the islands on the Maine Island Trail

Maine Island Trail Association (MITA)

Freedom Boat Club at Yarmouth Boat Yard, Maine

Freedom Boat Club of Maine

USCG Station South Portland, ME

Yarmouth Boat Yard

Maine Yacht Center

Casco Bay Boat Transport

Portland, ME Tides - Dec 1864

< Nov 1864

Print this Tide Chart

Jan 1865 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Thu	11:57	10.6			5:44	0.4	6:21	-0.7	6:59	4:09		1	Thu
2	Fri	12:36	9.3	12:42	10.6	6:29	0.3	7:06	-0.7	7:00	4:09		2	Fri
3	Sat	1:22	9.4	1:30	10.4	7:18	0.3	7:54	-0.7	7:01	4:08		3	Sat
4	Sun	2:12	9.4	2:23	10.2	8:11	0.4	8:47	-0.5	7:02	4:08		4	Sun
5	Mon	3:07	9.5	3:23	9.9	9:10	0.4	9:42	-0.3	7:03	4:08		5	Mon
6	Tue	4:05	9.6	4:26	9.6	10:12	0.4	10:41	-0.1	7:04	4:08		6	Tue
7	Wed	5:05	9.8	5:32	9.4	11:17	0.3	11:41	0.0	7:05	4:08		7	Wed
8	Thu	6:06	10.0	6:39	9.3			12:24	0.0	7:06	4:08		8	Thu
9	Fri	7:07	10.3	7:43	9.4	12:44	0.1	1:30	-0.3	7:07	4:08		9	Fri
10	Sat	8:05	10.6	8:43	9.5	1:44	0.1	2:29	-0.7	7:08	4:08		10	Sat
11	Sun	8:58	10.8	9:37	9.6	2:40	0.0	3:24	-1.0	7:09	4:08		11	Sun
12	Mon	9:49	11.0	10:28	9.6	3:32	0.0	4:14	-1.1	7:09	4:08		12	Mon
13	Tue	10:37	10.9	11:17	9.6	4:22	0.0	5:03	-1.1	7:10	4:08		13	Tue
14	Wed	11:24	10.8			5:09	0.1	5:48	-1.0	7:11	4:08		14	Wed
15	Thu	12:03	9.5	12:09	10.5	5:55	0.3	6:32	-0.7	7:12	4:09		15	Thu
16	Fri	12:47	9.3	12:52	10.2	6:39	0.5	7:14	-0.4	7:12	4:09		16	Fri
17	Sat	1:30	9.1	1:36	9.7	7:24	0.8	7:57	0.0	7:13	4:09		17	Sat
18	Sun	2:14	8.9	2:21	9.3	8:10	1.0	8:40	0.4	7:14	4:10		18	Sun
19	Mon	3:00	8.7	3:10	8.8	8:59	1.3	9:25	0.8	7:14	4:10		19	Mon
20	Tue	3:47	8.6	4:01	8.4	9:50	1.5	10:12	1.1	7:15	4:10		20	Tue
21	Wed	4:36	8.6	4:55	8.1	10:44	1.6	11:00	1.3	7:15	4:11		21	Wed
22	Thu	5:25	8.6	5:51	7.9	11:39	1.5	11:51	1.5	7:16	4:11		22	Thu
23	Fri	6:16	8.7	6:49	7.9			12:37	1.4	7:16	4:12		23	Fri
24	Sat	7:07	8.9	7:43	8.0	12:43	1.5	1:31	1.0	7:17	4:13		24	Sat
25	Sun	7:55	9.3	8:33	8.2	1:35	1.4	2:21	0.6	7:17	4:13		25	Sun
26	Mon	8:41	9.7	9:19	8.5	2:22	1.1	3:06	0.2	7:17	4:14		26	Mon
27	Tue	9:25	10.1	10:03	8.9	3:08	0.8	3:49	-0.3	7:18	4:15		27	Tue
28	Wed	10:08	10.5	10:47	9.2	3:52	0.4	4:33	-0.7	7:18	4:15		28	Wed
29	Thu	10:53	10.8	11:32	9.5	4:38	0.1	5:17	-1.1	7:18	4:16		29	Thu
30	Fri	11:39	11.0			5:24	-0.2	6:01	-1.3	7:18	4:17		30	Fri
31	Sat	12:17	9.8	12:26	11.0	6:13	-0.4	6:47	-1.3	7:18	4:18		31	Sat
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (8418150)

www.USHarbors.com

The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

Is this week a spring tide or neap tide in Portland, ME?

Portland, ME is currently in a transitional phase. Tonight's moon is 75% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are shifting between spring and neap.

What datum are Portland, ME tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Portland, ME?

Tide predictions for Portland, ME come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Portland, ME?

Tide data for Portland, ME is sourced from NOAA Station #8418150. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8418150.

What is the moon phase in Portland, ME tonight?

Tonight the moon over Portland, ME is Waxing Gibbous (75% illuminated). This places Portland, ME in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA

In The Zone: The Sabre 51 Salon Express

By US Harbors When Sabre Yachts completed construction of hull number 200 of its 48 Salon Express model, more than half the crew who built it had also worked on hull number one. The average tenure on that line was 12 years, and they produced a yacht that proved to… Learn More