Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 12:55 pm (1.0 ft)
Next high tide : in 4h 38m at 6:49 am (8.6 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Apr 2035

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:518.36:397.612:141.36:217:06Third Quarter1Sun
2Mon6:498.37:377.712:301.91:131.36:197:07Third Quarter2Mon
3Tue7:498.48:318.11:301.82:091.16:177:08Waning Crescent3Tue
4Wed8:448.79:198.52:271.43:000.76:157:10Waning Crescent4Wed
5Thu9:339.110:029.13:180.93:450.36:147:11Waning Crescent5Thu
6Fri10:199.510:439.64:040.34:27-0.16:127:12Waning Crescent6Fri
7Sat11:039.911:2410.24:48-0.35:09-0.56:107:13New Moon7Sat
8Sun11:4810.25:33-0.85:51-0.76:087:14New Moon8Sun
9Mon12:0610.612:3410.36:18-1.26:35-0.96:077:16New Moon9Mon
10Tue12:5010.91:2110.37:05-1.57:21-0.86:057:17Waxing Crescent10Tue
11Wed1:3511.02:1010.17:54-1.58:10-0.66:037:18Waxing Crescent11Wed
12Thu2:2410.93:039.88:45-1.39:02-0.36:017:19Waxing Crescent12Thu
13Fri3:1810.64:029.59:42-1.010:000.16:007:20First Quarter13Fri
14Sat4:1710.25:069.210:43-0.611:030.55:587:22First Quarter14Sat
15Sun5:239.86:139.011:48-0.35:567:23First Quarter15Sun
16Mon6:329.67:209.012:110.712:560.05:557:24First Quarter16Mon
17Tue7:429.48:259.21:220.82:030.05:537:25Waxing Gibbous17Tue
18Wed8:479.59:229.52:310.53:040.05:517:26Waxing Gibbous18Wed
19Thu9:459.610:139.73:310.23:57-0.15:507:28Waxing Gibbous19Thu
20Fri10:369.610:589.94:23-0.14:44-0.15:487:29Full Moon20Fri
21Sat11:239.611:4010.05:10-0.35:260.05:477:30Full Moon21Sat
22Sun12:079.55:53-0.46:060.25:457:31Full Moon22Sun
23Mon12:1910.012:489.46:34-0.46:430.45:437:32Full Moon23Mon
24Tue12:569.91:279.17:12-0.37:200.65:427:34Waning Gibbous24Tue
25Wed1:319.72:058.97:49-0.17:560.95:407:35Waning Gibbous25Wed
26Thu2:089.52:458.68:270.28:351.25:397:36Waning Gibbous26Thu
27Fri2:469.23:278.39:070.49:171.55:377:37Waning Gibbous27Fri
28Sat3:289.04:138.19:510.710:031.75:367:38Waning Gibbous28Sat
29Sun4:168.75:038.010:380.910:531.85:347:40Third Quarter29Sun
30Mon5:078.55:548.011:281.111:471.95:337:41Third Quarter30Mon
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 9:52 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 67% 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 (67% 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