Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Sunday, July 19, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 9:39 am (-0.3 ft)
Next high tide : in 2h 18m at 3:24 am (10.0 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:15 am
Moon phase : First Quarter (32% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Nov 2068

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:448.43:529.39:391.210:180.47:175:29First Quarter1Thu
2Fri4:378.54:499.310:351.211:130.47:185:28First Quarter2Fri
3Sat5:358.75:519.311:361.07:195:27First Quarter3Sat
4Sun5:349.05:559.412:110.311:39 AM0.76:214:25Waxing Gibbous4Sun
5Mon6:339.57:009.612:110.112:440.26:224:24Waxing Gibbous5Mon
6Tue7:3110.18:019.81:10-0.11:46-0.46:234:23Waxing Gibbous6Tue
7Wed8:2610.78:5910.12:07-0.42:44-1.06:254:22Waxing Gibbous7Wed
8Thu9:1811.29:5310.33:00-0.63:38-1.56:264:21Full Moon8Thu
9Fri10:0911.410:4710.33:52-0.74:31-1.76:274:20Full Moon9Fri
10Sat11:0011.511:4010.24:43-0.75:22-1.76:294:18Full Moon10Sat
11Sun11:5011.35:34-0.56:14-1.56:304:17Waning Gibbous11Sun
12Mon12:319.912:4110.96:25-0.27:05-1.16:314:16Waning Gibbous12Mon
13Tue1:239.61:3310.47:170.27:58-0.66:324:15Waning Gibbous13Tue
14Wed2:179.22:289.88:110.78:52-0.16:344:14Waning Gibbous14Wed
15Thu3:138.83:269.39:091.19:480.46:354:13Third Quarter15Thu
16Fri4:108.64:258.810:101.310:440.86:364:13Third Quarter16Fri
17Sat5:068.55:248.511:111.511:391.16:384:12Third Quarter17Sat
18Sun6:018.56:228.312:111.46:394:11Third Quarter18Sun
19Mon6:538.77:188.212:341.21:091.36:404:10Waning Crescent19Mon
20Tue7:428.98:108.31:251.32:011.06:414:09Waning Crescent20Tue
21Wed8:269.18:568.42:101.22:460.76:434:09Waning Crescent21Wed
22Thu9:069.39:388.52:511.13:270.46:444:08Waning Crescent22Thu
23Fri9:449.510:198.63:291.14:050.26:454:07New Moon23Fri
24Sat10:219.710:588.64:061.04:420.06:464:07New Moon24Sat
25Sun10:589.811:368.74:430.95:19-0.16:484:06New Moon25Sun
26Mon11:359.95:210.95:57-0.26:494:06New Moon26Mon
27Tue12:148.712:149.96:010.86:37-0.36:504:05Waxing Crescent27Tue
28Wed12:538.712:569.96:430.87:19-0.36:514:05Waxing Crescent28Wed
29Thu1:368.81:419.87:300.78:05-0.26:524:04Waxing Crescent29Thu
30Fri2:248.92:339.68:210.78:55-0.26:534:04First Quarter30Fri
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 6:31 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 transitional phase. Tonight's moon is 32% 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 (32% 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