Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 9, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 1:19 am (0.3 ft)
Next high tide : in 5h 44m at 6:51 pm (9.9 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:07 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jul 2057

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:018.35:480.35:441.45:028:25New Moon1Sun
2Mon12:408.46:250.26:221.45:038:25New Moon2Mon
3Tue12:379.61:178.47:010.26:591.45:038:25New Moon3Tue
4Wed1:139.61:548.47:360.27:371.45:048:25Waxing Crescent4Wed
5Thu1:509.52:318.58:120.28:161.45:058:24Waxing Crescent5Thu
6Fri2:289.53:098.68:500.28:591.35:058:24Waxing Crescent6Fri
7Sat3:099.43:508.79:300.29:451.25:068:23Waxing Crescent7Sat
8Sun3:559.24:348.910:140.310:361.15:078:23First Quarter8Sun
9Mon4:459.15:219.211:000.311:300.85:078:23First Quarter9Mon
10Tue5:398.96:119.611:500.45:088:22First Quarter10Tue
11Wed6:388.97:069.912:270.612:440.45:098:22Waxing Gibbous11Wed
12Thu7:408.98:0410.31:280.21:420.45:108:21Waxing Gibbous12Thu
13Fri8:449.09:0210.72:31-0.22:420.25:118:20Waxing Gibbous13Fri
14Sat9:459.29:5911.13:31-0.73:400.05:128:20Waxing Gibbous14Sat
15Sun10:449.510:5611.34:29-1.14:37-0.25:128:19Full Moon15Sun
16Mon11:419.711:5211.55:25-1.45:33-0.35:138:18Full Moon16Mon
17Tue12:379.86:20-1.56:29-0.35:148:18Full Moon17Tue
18Wed12:4811.41:319.97:13-1.57:24-0.35:158:17Waning Gibbous18Wed
19Thu1:4211.12:239.98:05-1.38:19-0.15:168:16Waning Gibbous19Thu
20Fri2:3610.73:169.78:56-0.99:150.25:178:15Waning Gibbous20Fri
21Sat3:3110.14:109.69:49-0.410:140.55:188:14Third Quarter21Sat
22Sun4:279.55:049.410:410.111:130.85:198:13Third Quarter22Sun
23Mon5:258.95:579.211:330.65:208:12Third Quarter23Mon
24Tue6:238.46:509.112:121.012:261.15:218:11Third Quarter24Tue
25Wed7:228.17:449.01:121.11:211.45:228:10Waning Crescent25Wed
26Thu8:217.98:379.02:121.12:171.65:238:09Waning Crescent26Thu
27Fri9:167.99:269.13:070.93:091.75:248:08Waning Crescent27Fri
28Sat10:058.010:119.33:560.83:551.65:258:07Waning Crescent28Sat
29Sun10:508.110:549.44:400.64:381.55:268:06New Moon29Sun
30Mon11:338.311:349.65:210.45:181.35:278:05New Moon30Mon
31Tue12:128.45:580.35:561.25:288:04New Moon31Tue
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 10:05 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 transitional phase. Tonight's moon is 30% 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 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 Waning Crescent (30% illuminated). This places South Harpswell, 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