Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 1:04 am (1.1 ft)
Next high tide : in 4h 20m at 6:36 pm (9.1 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:18 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - May 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:329.59:079.72:170.62:48-0.15:317:42Waxing Gibbous1Wed
2Thu9:319.99:5710.53:16-0.13:40-0.55:307:43Waxing Gibbous2Thu
3Fri10:2610.210:4611.14:11-0.94:30-0.75:287:44Full Moon3Fri
4Sat11:2010.411:3511.45:04-1.55:19-0.85:277:45Full Moon4Sat
5Sun12:1310.45:56-1.86:09-0.75:267:47Full Moon5Sun
6Mon12:2411.61:0610.26:48-1.97:00-0.55:247:48Waning Gibbous6Mon
7Tue1:1511.41:599.87:40-1.77:52-0.15:237:49Waning Gibbous7Tue
8Wed2:0611.02:559.48:34-1.28:460.45:227:50Waning Gibbous8Wed
9Thu3:0210.53:549.09:32-0.79:440.95:217:51Waning Gibbous9Thu
10Fri4:019.94:568.610:32-0.110:481.35:197:52Third Quarter10Fri
11Sat5:059.35:588.411:340.411:541.65:187:54Third Quarter11Sat
12Sun6:098.96:598.412:360.75:177:55Third Quarter12Sun
13Mon7:138.67:578.51:001.71:360.95:167:56Third Quarter13Mon
14Tue8:148.58:488.72:041.52:311.05:157:57Waning Crescent14Tue
15Wed9:088.59:339.03:001.33:181.15:147:58Waning Crescent15Wed
16Thu9:568.510:149.23:490.93:591.15:137:59Waning Crescent16Thu
17Fri10:408.510:519.44:320.74:371.15:128:00Waning Crescent17Fri
18Sat11:218.511:269.55:110.45:121.25:118:01New Moon18Sat
19Sun12:018.55:480.35:471.35:108:02New Moon19Sun
20Mon12:009.512:398.46:230.26:211.45:098:03New Moon20Mon
21Tue12:349.61:168.46:580.26:571.55:088:04New Moon21Tue
22Wed1:099.51:538.37:350.27:351.55:078:05Waxing Crescent22Wed
23Thu1:469.52:328.28:130.38:151.65:068:06Waxing Crescent23Thu
24Fri2:279.43:158.18:560.39:011.65:058:07Waxing Crescent24Fri
25Sat3:129.44:038.29:430.49:521.65:058:08Waxing Crescent25Sat
26Sun4:049.34:558.310:330.410:481.55:048:09First Quarter26Sun
27Mon5:009.25:498.611:260.311:471.25:038:10First Quarter27Mon
28Tue6:009.26:459.112:210.35:038:11First Quarter28Tue
29Wed7:039.27:419.612:500.91:180.25:028:12Waxing Gibbous29Wed
30Thu8:079.48:3610.21:540.32:150.05:018:13Waxing Gibbous30Thu
31Fri9:089.59:2910.82:55-0.33:10-0.15:018:14Waxing Gibbous31Fri
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 9:50 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 62% 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 First Quarter (62% 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