Tides Today & Tomorrow in Belfast, ME

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Belfast, ME.
Next low tide : in 3h 48m at 9:39 am (0.9 ft)
Next high tide : 3:55 pm (10.7 ft)
Sunset today : 7:36 pm
Sunrise tomorrow : 5:42 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8415191
Common Questions About Tides

Belfast, ME Tides - Dec 1933

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:0711.110:429.93:551.14:29-0.16:513:58Full Moon1Fri
2Sat10:4511.011:219.74:341.35:080.06:533:57Full Moon2Sat
3Sun11:2210.911:589.65:121.45:450.26:543:57Full Moon3Sun
4Mon12:0010.75:501.66:230.46:553:57Waning Gibbous4Mon
5Tue12:369.512:3810.56:271.87:010.66:563:57Waning Gibbous5Tue
6Wed1:149.31:1710.37:061.97:400.86:573:56Waning Gibbous6Wed
7Thu1:549.21:5910.17:482.08:201.06:583:56Waning Gibbous7Thu
8Fri2:379.22:439.88:322.19:031.16:593:56Third Quarter8Fri
9Sat3:229.33:329.69:212.09:491.17:003:56Third Quarter9Sat
10Sun4:099.54:259.510:141.910:371.27:013:56Third Quarter10Sun
11Mon4:599.85:219.511:091.511:281.17:023:56Third Quarter11Mon
12Tue5:5110.26:199.612:071.07:023:56Waning Crescent12Tue
13Wed6:4310.77:179.812:211.01:030.47:033:56Waning Crescent13Wed
14Thu7:3611.38:1410.11:150.71:59-0.37:043:56Waning Crescent14Thu
15Fri8:2911.99:0810.52:090.52:53-0.97:053:57New Moon15Fri
16Sat9:2112.410:0210.83:030.23:46-1.47:063:57New Moon16Sat
17Sun10:1412.710:5511.03:56-0.14:40-1.77:063:57New Moon17Sun
18Mon11:0712.811:4811.14:50-0.25:33-1.87:073:58New Moon18Mon
19Tue12:0212.75:45-0.26:27-1.67:073:58Waxing Crescent19Tue
20Wed12:4311.012:5712.36:41-0.17:22-1.37:083:58Waxing Crescent20Wed
21Thu1:3910.91:5511.87:400.18:18-0.87:093:59Waxing Crescent21Thu
22Fri2:3610.72:5511.28:410.49:15-0.37:093:59First Quarter22Fri
23Sat3:3510.63:5810.59:440.610:130.37:104:00First Quarter23Sat
24Sun4:3510.45:029.910:490.811:120.87:104:00First Quarter24Sun
25Mon5:3410.46:079.511:530.87:104:01First Quarter25Mon
26Tue6:3210.47:099.312:101.112:540.77:114:02Waxing Gibbous26Tue
27Wed7:2710.48:059.31:071.41:500.57:114:02Waxing Gibbous27Wed
28Thu8:1710.58:569.32:001.52:410.47:114:03Waxing Gibbous28Thu
29Fri9:0310.69:419.42:491.53:270.27:114:04Waxing Gibbous29Fri
30Sat9:4610.710:229.53:331.54:090.27:124:05Full Moon30Sat
31Sun10:2610.710:569.64:141.44:480.17:124:05Full Moon31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8415191)

Common Questions About Belfast, ME Tides

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

Slack tide in Belfast, ME is approximately 12:47 pm — 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 36% 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 (36% 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