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 1h 28m 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 - Sep 1933

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:579.99:1511.52:400.02:560.85:587:13Waxing Gibbous1Fri
2Sat9:5510.410:1311.83:39-0.43:550.35:597:11Full Moon2Sat
3Sun10:4710.911:0512.04:33-0.74:50-0.16:007:10Full Moon3Sun
4Mon11:3511.311:5411.95:22-0.85:40-0.46:017:08Full Moon4Mon
5Tue12:2111.56:07-0.76:28-0.46:027:06Full Moon5Tue
6Wed12:4111.71:0411.56:51-0.47:14-0.36:047:04Waning Gibbous6Wed
7Thu1:2711.21:4611.37:340.08:000.06:057:02Waning Gibbous7Thu
8Fri2:1210.72:2911.08:160.68:460.46:067:00Waning Gibbous8Fri
9Sat2:5810.13:1310.58:591.29:340.96:076:59Waning Gibbous9Sat
10Sun3:479.54:0010.19:461.810:241.36:086:57Third Quarter10Sun
11Mon4:399.04:529.710:362.311:191.76:096:55Third Quarter11Mon
12Tue5:368.65:509.511:312.66:116:53Third Quarter12Tue
13Wed6:358.46:499.412:181.812:302.76:126:51Third Quarter13Wed
14Thu7:348.57:479.61:171.81:292.56:136:49Waning Crescent14Thu
15Fri8:278.88:399.92:111.52:232.26:146:47Waning Crescent15Fri
16Sat9:149.29:2610.33:001.23:111.76:156:46Waning Crescent16Sat
17Sun9:569.710:0910.73:430.83:551.26:166:44Waning Crescent17Sun
18Mon10:3510.310:4911.04:220.44:360.76:186:42New Moon18Mon
19Tue11:1210.811:2811.24:590.15:160.26:196:40New Moon19Tue
20Wed11:4811.35:36-0.15:56-0.26:206:38New Moon20Wed
21Thu12:0811.312:2611.66:13-0.26:37-0.56:216:36Waxing Crescent21Thu
22Fri12:5011.21:0711.86:53-0.17:21-0.66:226:34Waxing Crescent22Fri
23Sat1:3511.01:5111.97:350.18:09-0.56:236:32Waxing Crescent23Sat
24Sun1:2310.71:3911.77:230.58:02-0.35:255:31Waxing Crescent24Sun
25Mon2:1710.22:3411.48:150.99:010.05:265:29First Quarter25Mon
26Tue3:179.83:3611.09:161.310:060.35:275:27First Quarter26Tue
27Wed4:259.54:4510.810:241.511:160.55:285:25First Quarter27Wed
28Thu5:369.45:5710.711:361.55:295:23Waxing Gibbous28Thu
29Fri6:459.77:0510.912:250.412:461.25:315:21Waxing Gibbous29Fri
30Sat7:4610.28:0711.11:280.11:500.75:325:19Waxing Gibbous30Sat
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