Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 30, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 6:30 pm (1.1 ft)
Next high tide : in 1h 06m at 12:45 pm (8.5 ft)
Sunset today : 8:05 pm
Sunrise tomorrow : 5:27 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jul 2079

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:0311.31:499.67:31-1.37:400.15:028:25Waxing Crescent1Sat
2Sun1:5811.02:449.58:25-1.18:370.35:038:25Waxing Crescent2Sun
3Mon2:5410.53:399.49:19-0.79:360.55:038:25Waxing Crescent3Mon
4Tue3:5210.04:359.410:12-0.310:370.85:048:25First Quarter4Tue
5Wed4:509.45:299.311:060.211:380.95:048:24First Quarter5Wed
6Thu5:498.86:229.211:590.75:058:24First Quarter6Thu
7Fri6:498.37:159.112:391.112:521.25:068:24First Quarter7Fri
8Sat7:498.08:089.11:401.11:461.55:068:23Waxing Gibbous8Sat
9Sun8:477.98:589.12:381.02:401.75:078:23Waxing Gibbous9Sun
10Mon9:397.89:459.23:300.93:291.85:088:22Waxing Gibbous10Mon
11Tue10:287.910:299.34:170.74:141.85:098:22Waxing Gibbous11Tue
12Wed11:128.011:119.45:010.64:561.75:108:21Full Moon12Wed
13Thu11:548.111:519.55:410.55:351.65:108:21Full Moon13Thu
14Fri12:348.26:190.46:141.55:118:20Full Moon14Fri
15Sat12:309.61:118.36:550.36:521.45:128:19Full Moon15Sat
16Sun1:069.61:468.47:300.27:301.35:138:19Waning Gibbous16Sun
17Mon1:439.62:228.68:040.18:101.25:148:18Waning Gibbous17Mon
18Tue2:219.62:598.88:410.18:531.05:158:17Waning Gibbous18Tue
19Wed3:039.43:389.09:200.19:400.95:168:16Waning Gibbous19Wed
20Thu3:499.24:229.310:030.210:300.75:178:15Third Quarter20Thu
21Fri4:399.05:099.510:490.411:250.65:188:15Third Quarter21Fri
22Sat5:348.86:019.811:400.55:198:14Third Quarter22Sat
23Sun6:348.66:5710.012:240.412:350.75:208:13Waning Crescent23Sun
24Mon7:408.57:5910.21:270.21:360.75:218:12Waning Crescent24Mon
25Tue8:468.69:0110.52:32-0.12:390.65:228:11Waning Crescent25Tue
26Wed9:498.810:0110.83:35-0.53:400.45:238:10Waning Crescent26Wed
27Thu10:489.111:0011.04:33-0.84:390.25:248:09New Moon27Thu
28Fri11:459.311:5611.15:30-1.15:360.05:258:08New Moon28Fri
29Sat12:399.66:23-1.26:31-0.15:268:06New Moon29Sat
30Sun12:5011.01:309.77:14-1.17:25-0.15:278:05Waxing Crescent30Sun
31Mon1:4210.72:199.78:03-0.98:180.15:288:04Waxing Crescent31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

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

Slack tide in South Harpswell, ME is approximately 3:37 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 South Harpswell, ME?

South Harpswell, ME is currently in a spring phase. Tonight's moon is 99% 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 maximum.

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 Full Moon (99% illuminated). This places South Harpswell, ME in a spring tide cycle, so tidal ranges are near their weekly maximum 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