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 4h 20m at 10:14 pm (0.8 ft)
Next high tide (tomorrow) : 4:26 am (9.6 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 1932

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:5111.25:38-0.75:53-0.25:587:13New Moon1Thu
2Fri12:0712.012:3311.76:19-0.96:39-0.65:597:11Waxing Crescent2Fri
3Sat12:5312.01:1712.07:02-0.87:27-0.86:007:09Waxing Crescent3Sat
4Sun1:4111.82:0312.17:48-0.68:18-0.86:027:07Waxing Crescent4Sun
5Mon2:3211.32:5312.08:36-0.29:12-0.66:037:06Waxing Crescent5Mon
6Tue3:2710.83:4711.79:290.310:12-0.26:047:04First Quarter6Tue
7Wed4:2710.24:4811.310:270.911:160.16:057:02First Quarter7Wed
8Thu5:349.75:5410.911:331.36:067:00First Quarter8Thu
9Fri6:449.47:0410.812:250.412:431.56:076:58Waxing Gibbous9Fri
10Sat7:539.48:1210.81:340.51:521.46:096:56Waxing Gibbous10Sat
11Sun8:569.79:1211.02:380.32:541.16:106:54Waxing Gibbous11Sun
12Mon9:5010.010:0611.13:340.13:500.86:116:53Waxing Gibbous12Mon
13Tue10:3810.410:5411.24:240.04:400.56:126:51Full Moon13Tue
14Wed11:2110.611:3711.15:08-0.15:250.36:136:49Full Moon14Wed
15Thu12:0010.85:480.16:060.36:146:47Full Moon15Thu
16Fri12:1810.912:3610.86:250.36:450.46:166:45Full Moon16Fri
17Sat12:5610.61:1110.77:010.77:230.56:176:43Waning Gibbous17Sat
18Sun1:3410.21:4710.57:361.18:010.86:186:41Waning Gibbous18Sun
19Mon2:129.82:2310.38:111.58:411.16:196:39Waning Gibbous19Mon
20Tue2:539.43:0310.08:501.99:231.46:206:38Waning Gibbous20Tue
21Wed3:379.03:479.79:322.310:111.76:216:36Third Quarter21Wed
22Thu4:268.64:379.510:202.611:041.96:236:34Third Quarter22Thu
23Fri5:218.45:349.411:152.76:246:32Third Quarter23Fri
24Sat6:218.46:359.512:031.912:152.76:256:30Third Quarter24Sat
25Sun6:218.66:349.81:031.612:152.45:265:28Waning Crescent25Sun
26Mon7:159.17:2910.412:591.21:121.85:275:26Waning Crescent26Mon
27Tue8:059.88:2010.91:500.62:041.05:285:24Waning Crescent27Tue
28Wed8:5110.69:0911.52:360.02:540.25:305:23New Moon28Wed
29Thu9:3511.49:5611.93:21-0.53:41-0.55:315:21New Moon29Thu
30Fri10:1912.010:4312.04:05-0.84:29-1.15:325:19New Moon30Fri
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 1:20 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 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