Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Sunday, June 21, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 22m at 11:36 pm (0.8 ft)
Next high tide (tomorrow) : 5:49 am (9.0 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - May 2033

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:0311.41:4210.27:24-1.77:38-0.45:317:42Waxing Crescent1Sun
2Mon1:5311.02:359.88:16-1.38:290.05:297:44Waxing Crescent2Mon
3Tue2:4510.53:299.49:09-0.89:240.55:287:45Waxing Crescent3Tue
4Wed3:4010.04:269.010:04-0.310:221.05:277:46First Quarter4Wed
5Thu4:389.45:248.711:010.211:221.35:257:47First Quarter5Thu
6Fri5:378.96:218.611:590.75:247:48First Quarter6Fri
7Sat6:378.67:178.512:241.512:560.95:237:49First Quarter7Sat
8Sun7:368.48:118.71:261.51:521.15:217:51Waxing Gibbous8Sun
9Mon8:338.49:008.92:241.32:431.15:207:52Waxing Gibbous9Mon
10Tue9:248.59:449.13:161.13:281.15:197:53Waxing Gibbous10Tue
11Wed10:098.610:249.44:000.84:091.05:187:54Waxing Gibbous11Wed
12Thu10:528.711:019.64:410.54:460.95:177:55Full Moon12Thu
13Fri11:328.811:379.75:190.25:220.95:167:56Full Moon13Fri
14Sat12:118.85:550.05:580.95:157:57Full Moon14Sat
15Sun12:139.812:498.96:31-0.16:350.85:137:58Full Moon15Sun
16Mon12:499.91:268.97:08-0.27:140.85:128:00Waning Gibbous16Mon
17Tue1:2610.02:058.97:48-0.27:550.85:118:01Waning Gibbous17Tue
18Wed2:0610.02:488.98:30-0.38:410.85:108:02Waning Gibbous18Wed
19Thu2:519.93:358.99:16-0.29:310.85:108:03Waning Gibbous19Thu
20Fri3:429.84:279.010:06-0.210:260.85:098:04Third Quarter20Fri
21Sat4:389.65:239.211:00-0.111:260.75:088:05Third Quarter21Sat
22Sun5:399.56:219.511:57-0.15:078:06Third Quarter22Sun
23Mon6:439.57:219.912:290.512:56-0.15:068:07Waning Crescent23Mon
24Tue7:499.58:2110.31:340.11:57-0.15:058:08Waning Crescent24Tue
25Wed8:539.69:1810.72:38-0.32:56-0.35:058:09Waning Crescent25Wed
26Thu9:529.810:1111.13:38-0.83:52-0.45:048:10Waning Crescent26Thu
27Fri10:499.911:0311.24:33-1.24:45-0.45:038:11New Moon27Fri
28Sat11:4310.011:5511.35:27-1.45:37-0.45:028:11New Moon28Sat
29Sun12:359.96:18-1.46:28-0.25:028:12New Moon29Sun
30Mon12:4511.11:269.87:08-1.37:180.15:018:13Waxing Crescent30Mon
31Tue1:3410.82:169.57:57-1.08:080.45:018:14Waxing Crescent31Tue
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 2:42 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 neap phase. Tonight's moon is 48% 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 minimum.

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 (48% illuminated). This places South Harpswell, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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