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 5h 25m 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 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:299.04:138.29:510.710:041.65:317:43Third Quarter1Thu
2Fri4:168.85:018.110:380.810:541.75:297:44Third Quarter2Fri
3Sat5:078.75:528.211:270.911:481.65:287:45Third Quarter3Sat
4Sun6:018.66:448.512:190.95:277:46Third Quarter4Sun
5Mon6:598.77:378.912:461.41:140.75:257:47Waning Crescent5Mon
6Tue7:589.08:309.51:450.92:080.45:247:48Waning Crescent6Tue
7Wed8:569.39:2010.12:420.33:010.15:237:50Waning Crescent7Wed
8Thu9:509.710:0910.73:36-0.43:52-0.35:217:51Waning Crescent8Thu
9Fri10:4210.010:5911.24:28-1.14:42-0.65:207:52New Moon9Fri
10Sat11:3510.311:4911.65:19-1.65:33-0.85:197:53New Moon10Sat
11Sun12:2810.46:11-1.96:25-0.85:187:54New Moon11Sun
12Mon12:4111.71:2210.47:04-1.97:17-0.75:177:55Waxing Crescent12Mon
13Tue1:3411.52:1610.27:57-1.88:12-0.55:167:56Waxing Crescent13Tue
14Wed2:2811.23:149.98:53-1.49:10-0.15:157:57Waxing Crescent14Wed
15Thu3:2710.74:159.79:51-1.010:120.35:137:59First Quarter15Thu
16Fri4:3010.25:179.510:52-0.511:170.65:128:00First Quarter16Fri
17Sat5:349.76:199.411:54-0.15:118:01First Quarter17Sat
18Sun6:399.37:199.412:240.812:550.35:108:02First Quarter18Sun
19Mon7:439.08:179.41:310.81:560.55:108:03Waxing Gibbous19Mon
20Tue8:448.99:099.52:330.62:510.75:098:04Waxing Gibbous20Tue
21Wed9:388.89:569.73:280.43:400.85:088:05Waxing Gibbous21Wed
22Thu10:268.810:389.74:160.24:240.85:078:06Waxing Gibbous22Thu
23Fri11:118.811:189.85:000.15:040.95:068:07Full Moon23Fri
24Sat11:528.811:559.85:400.05:421.05:058:08Full Moon24Sat
25Sun12:318.76:180.06:191.15:058:09Full Moon25Sun
26Mon12:329.71:098.76:530.16:541.25:048:10Full Moon26Mon
27Tue1:079.71:468.67:280.17:311.35:038:11Waning Gibbous27Tue
28Wed1:439.52:238.58:040.28:091.35:038:12Waning Gibbous28Wed
29Thu2:209.43:018.58:410.38:501.45:028:12Waning Gibbous29Thu
30Fri3:009.33:438.59:210.49:341.45:018:13Waning Gibbous30Fri
31Sat3:449.14:278.610:050.510:231.45:018:14Third Quarter31Sat
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