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 (tomorrow) : 7:03 am (0.1 ft)
Next high tide (tomorrow) : in 4h 28m at 12:45 am (9.7 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 - May 2080

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:599.510:2210.13:460.04:050.15:307:43Waxing Gibbous1Wed
2Thu10:519.511:0610.34:37-0.44:510.15:297:44Full Moon2Thu
3Fri11:399.411:4810.35:25-0.65:340.35:277:46Full Moon3Fri
4Sat12:249.26:09-0.66:150.65:267:47Full Moon4Sat
5Sun12:2810.21:079.06:52-0.56:550.95:257:48Full Moon5Sun
6Mon1:0710.01:498.77:32-0.37:351.25:237:49Waning Gibbous6Mon
7Tue1:469.72:318.48:130.08:161.55:227:50Waning Gibbous7Tue
8Wed2:279.43:158.18:560.48:591.85:217:51Waning Gibbous8Wed
9Thu3:119.04:037.99:410.89:472.05:207:52Waning Gibbous9Thu
10Fri4:008.74:537.710:301.010:392.25:187:54Third Quarter10Fri
11Sat4:538.55:457.711:201.211:332.25:177:55Third Quarter11Sat
12Sun5:478.36:377.912:101.35:167:56Third Quarter12Sun
13Mon6:438.27:278.112:302.11:011.35:157:57Third Quarter13Mon
14Tue7:398.28:148.61:271.91:501.25:147:58Waning Crescent14Tue
15Wed8:338.48:589.12:221.42:371.15:137:59Waning Crescent15Wed
16Thu9:238.69:399.63:110.83:210.95:128:00Waning Crescent16Thu
17Fri10:108.810:2110.13:580.24:050.65:118:01Waning Crescent17Fri
18Sat10:569.011:0310.54:43-0.34:480.55:108:02New Moon18Sat
19Sun11:449.211:4910.85:29-0.85:340.35:098:03New Moon19Sun
20Mon12:339.36:16-1.06:220.35:088:04New Moon20Mon
21Tue12:3711.01:239.37:06-1.17:120.35:078:05Waxing Crescent21Tue
22Wed1:2710.92:169.27:57-1.18:050.45:068:06Waxing Crescent22Wed
23Thu2:2110.73:129.18:52-0.99:030.65:068:07Waxing Crescent23Thu
24Fri3:2010.44:139.09:50-0.610:050.85:058:08First Quarter24Fri
25Sat4:2410.05:169.010:51-0.311:120.95:048:09First Quarter25Sat
26Sun5:309.76:189.211:520.05:038:10First Quarter26Sun
27Mon6:369.37:199.412:200.912:530.25:038:11First Quarter27Mon
28Tue7:429.18:169.61:290.71:530.45:028:12Waxing Gibbous28Tue
29Wed8:459.09:099.92:330.42:490.65:028:13Waxing Gibbous29Wed
30Thu9:428.99:5710.03:300.13:400.75:018:14Waxing Gibbous30Thu
31Fri10:348.810:4210.14:21-0.14:260.95:018:15Full Moon31Fri
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 3:54 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 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