Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide (tomorrow) : in 1h 46m at 1:19 am (0.3 ft)
Next high tide (tomorrow) : 7:30 am (8.5 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:07 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Apr 2058

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon5:518.36:447.512:221.36:207:07First Quarter1Mon
2Tue6:538.27:447.512:342.21:251.46:187:08First Quarter2Tue
3Wed7:558.28:407.71:382.12:241.36:167:09Waxing Gibbous3Wed
4Thu8:518.59:288.12:371.93:141.06:157:10Waxing Gibbous4Thu
5Fri9:398.810:108.53:261.53:560.76:137:11Waxing Gibbous5Fri
6Sat10:239.010:488.94:091.04:340.46:117:13Waxing Gibbous6Sat
7Sun11:039.311:249.44:490.55:090.26:097:14Full Moon7Sun
8Mon11:429.511:589.75:270.15:440.06:087:15Full Moon8Mon
9Tue12:219.66:06-0.36:20-0.16:067:16Full Moon9Tue
10Wed12:3310.01:009.66:45-0.66:58-0.16:047:17Full Moon10Wed
11Thu1:1010.31:429.57:27-0.87:390.06:027:19Waning Gibbous11Thu
12Fri1:5010.32:279.38:12-0.88:230.36:017:20Waning Gibbous12Fri
13Sat2:3510.33:179.09:01-0.69:130.55:597:21Waning Gibbous13Sat
14Sun3:2610.14:148.79:55-0.410:100.85:577:22Third Quarter14Sun
15Mon4:259.85:198.510:56-0.111:131.15:567:23Third Quarter15Mon
16Tue5:319.56:278.412:020.15:547:25Third Quarter16Tue
17Wed6:429.47:368.612:211.11:110.25:527:26Waning Crescent17Wed
18Thu7:549.58:419.01:341.02:190.05:517:27Waning Crescent18Thu
19Fri9:009.79:379.52:430.63:18-0.25:497:28Waning Crescent19Fri
20Sat9:589.910:2810.03:430.04:11-0.45:477:29Waning Crescent20Sat
21Sun10:5110.011:1410.34:37-0.44:58-0.45:467:31New Moon21Sun
22Mon11:4110.011:5810.45:26-0.75:43-0.35:447:32New Moon22Mon
23Tue12:279.86:13-0.96:25-0.15:437:33New Moon23Tue
24Wed12:3910.41:129.56:57-0.87:060.35:417:34New Moon24Wed
25Thu1:1910.21:559.27:39-0.67:470.75:407:35Waxing Crescent25Thu
26Fri1:599.92:398.88:22-0.28:281.15:387:36Waxing Crescent26Fri
27Sat2:409.53:248.49:050.29:121.55:377:38Waxing Crescent27Sat
28Sun3:249.14:148.09:530.610:001.95:357:39Waxing Crescent28Sun
29Mon4:148.75:077.810:431.010:532.15:347:40First Quarter29Mon
30Tue5:088.46:017.711:371.211:492.25:327:41First Quarter30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

Show All
What time does the tide turn (slack tide) in South Harpswell, ME today?

Slack tide in South Harpswell, ME is approximately 4:24 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 30% 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 Waning Crescent (30% 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