Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, August 5, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 10:17 am (0.5 ft)
Next high tide : in 1h 53m at 4:11 am (8.9 ft)
Sunset today : 7:58 pm
Sunrise tomorrow : 5:33 am
Moon phase : Third Quarter (55% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Sep 2090

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri5:319.25:549.911:310.46:047:15First Quarter1Fri
2Sat6:368.86:589.612:170.212:350.86:057:13First Quarter2Sat
3Sun7:418.68:019.51:240.41:401.06:067:11Waxing Gibbous3Sun
4Mon8:428.68:599.52:280.42:421.06:077:09Waxing Gibbous4Mon
5Tue9:368.79:519.53:240.43:360.96:097:08Waxing Gibbous5Tue
6Wed10:248.910:379.64:130.34:240.76:107:06Waxing Gibbous6Wed
7Thu11:069.011:199.64:560.25:060.66:117:04Full Moon7Thu
8Fri11:459.111:589.65:340.25:450.56:127:02Full Moon8Fri
9Sat12:219.26:090.26:220.56:137:00Full Moon9Sat
10Sun12:359.512:559.36:420.36:570.56:146:59Full Moon10Sun
11Mon1:109.41:289.37:140.47:320.56:156:57Waning Gibbous11Mon
12Tue1:459.22:009.27:460.68:080.66:166:55Waning Gibbous12Tue
13Wed2:218.92:359.28:210.88:460.76:186:53Waning Gibbous13Wed
14Thu2:598.73:139.19:001.09:290.86:196:51Waning Gibbous14Thu
15Fri3:428.43:579.19:421.110:170.96:206:49Third Quarter15Fri
16Sat4:318.24:479.110:311.311:090.96:216:48Third Quarter16Sat
17Sun5:258.25:429.111:241.36:226:46Third Quarter17Sun
18Mon6:238.26:419.312:060.812:221.26:236:44Third Quarter18Mon
19Tue7:258.57:449.71:070.61:240.96:246:42Waning Crescent19Tue
20Wed8:269.08:4610.12:090.22:260.46:256:40Waning Crescent20Wed
21Thu9:239.69:4310.63:07-0.43:25-0.26:276:38Waning Crescent21Thu
22Fri10:1610.210:3811.04:00-0.94:21-0.96:286:36New Moon22Fri
23Sat11:0710.811:3211.24:51-1.35:14-1.46:296:35New Moon23Sat
24Sun11:5811.25:42-1.56:08-1.76:306:33New Moon24Sun
25Mon12:2511.212:4811.46:32-1.57:01-1.76:316:31Waxing Crescent25Mon
26Tue1:1811.01:3911.37:23-1.37:54-1.66:326:29Waxing Crescent26Tue
27Wed2:1210.62:3111.08:14-0.88:49-1.26:336:27Waxing Crescent27Wed
28Thu3:0810.13:2610.69:08-0.39:47-0.76:356:25First Quarter28Thu
29Fri4:079.54:2610.010:060.310:49-0.16:366:24First Quarter29Fri
30Sat5:109.05:289.611:080.811:530.36:376:22First Quarter30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

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

Slack tide in South Harpswell, ME is approximately 7:14 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 South Harpswell, ME?

South Harpswell, ME is currently in a neap phase. Tonight's moon is 55% 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 near their weekly minimum.

What datum are South Harpswell, 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 South Harpswell, ME?

Tide predictions for South Harpswell, 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 South Harpswell, ME?

Tide data for South Harpswell, ME is sourced from NOAA Station #8417647. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8417647.

What is the moon phase in South Harpswell, ME tonight?

Tonight the moon over South Harpswell, ME is Third Quarter (55% illuminated). This places South Harpswell, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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