Tides Today & Tomorrow in Belfast, ME

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in Belfast, ME.
Next low tide (tomorrow) : in 5h 56m at 1:04 am (1.6 ft)
Next high tide (tomorrow) : 7:21 am (8.5 ft)
Sunset today : 7:31 pm
Sunrise tomorrow : 5:46 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8415191
Common Questions About Tides

Belfast, ME Tides - Mar 1947

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:4510.65:329.311:140.311:311.36:145:22First Quarter1Sat
2Sun5:5410.66:449.412:250.26:125:24Waxing Gibbous2Sun
3Mon7:0410.97:519.712:431.11:33-0.16:105:25Waxing Gibbous3Mon
4Tue8:1011.38:5210.31:510.72:35-0.66:095:26Waxing Gibbous4Tue
5Wed9:0911.79:4610.82:520.13:31-1.06:075:28Full Moon5Wed
6Thu10:0312.010:3511.23:47-0.44:22-1.36:055:29Full Moon6Thu
7Fri10:5412.111:2211.54:39-0.75:09-1.36:035:30Full Moon7Fri
8Sat11:4112.05:27-0.95:54-1.16:025:32Full Moon8Sat
9Sun12:0611.512:2811.66:14-0.86:37-0.76:005:33Waning Gibbous9Sun
10Mon12:4911.41:1311.17:00-0.57:20-0.15:585:34Waning Gibbous10Mon
11Tue1:3311.12:0010.47:46-0.18:040.65:565:35Waning Gibbous11Tue
12Wed2:1710.62:489.78:340.48:501.35:545:37Waning Gibbous12Wed
13Thu3:0310.13:399.19:240.99:391.85:535:38Third Quarter13Thu
14Fri3:549.74:368.610:181.310:342.35:515:39Third Quarter14Fri
15Sat4:509.35:368.411:171.611:342.55:495:41Third Quarter15Sat
16Sun5:519.26:378.412:181.65:475:42Third Quarter16Sun
17Mon6:509.37:338.612:342.41:151.55:455:43Waning Crescent17Mon
18Tue7:459.68:229.01:302.12:061.15:435:44Waning Crescent18Tue
19Wed8:3310.09:059.42:191.72:510.75:425:46Waning Crescent19Wed
20Thu9:1710.49:449.93:031.23:310.35:405:47Waning Crescent20Thu
21Fri9:5710.810:2010.43:440.74:090.05:385:48New Moon21Fri
22Sat10:3511.110:5610.94:230.24:44-0.25:365:49New Moon22Sat
23Sun11:1411.211:3211.25:01-0.25:20-0.35:345:51New Moon23Sun
24Mon11:5311.25:40-0.55:58-0.35:325:52Waxing Crescent24Mon
25Tue12:1011.512:3611.16:22-0.76:38-0.15:305:53Waxing Crescent25Tue
26Wed12:5111.61:2110.87:07-0.77:220.25:295:54Waxing Crescent26Wed
27Thu1:3711.52:1210.47:56-0.58:110.65:275:56Waxing Crescent27Thu
28Fri2:2811.33:099.98:52-0.29:081.05:255:57First Quarter28Fri
29Sat3:2610.94:139.59:540.110:121.35:235:58First Quarter29Sat
30Sun4:3210.65:249.411:030.311:241.45:215:59First Quarter30Sun
31Mon5:4510.56:359.512:140.35:196:00Waxing Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8415191)

Common Questions About Belfast, ME Tides

Show All
What time does the tide turn (slack tide) in Belfast, ME today?

Slack tide in Belfast, ME is approximately 4:12 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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

Belfast, ME is currently in a transitional phase. Tonight's moon is 65% 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 Belfast, 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 Belfast, ME?

Tide predictions for Belfast, 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 Belfast, ME?

Tide data for Belfast, ME is sourced from NOAA Station #8415191. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8415191.

What is the moon phase in Belfast, ME tonight?

Tonight the moon over Belfast, ME is First Quarter (65% illuminated). This places Belfast, 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