Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 16, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 7:59 am (-1.1 ft)
Next high tide (tomorrow) : in 5h 42m at 1:37 am (11.0 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jul 2066

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:338.66:019.511:400.75:028:25First Quarter1Thu
2Fri6:308.56:559.812:210.712:330.75:038:25Waxing Gibbous2Fri
3Sat7:328.57:5310.21:210.41:310.75:038:25Waxing Gibbous3Sat
4Sun8:368.68:5310.62:240.02:310.55:048:25Waxing Gibbous4Sun
5Mon9:388.99:5111.03:25-0.53:310.35:048:24Waxing Gibbous5Mon
6Tue10:379.210:4911.34:22-0.94:290.05:058:24Full Moon6Tue
7Wed11:359.611:4611.55:19-1.35:26-0.35:068:24Full Moon7Wed
8Thu12:309.96:13-1.56:23-0.45:078:23Full Moon8Thu
9Fri12:4211.51:2410.17:06-1.57:19-0.55:078:23Waning Gibbous9Fri
10Sat1:3711.22:1710.17:58-1.48:15-0.35:088:22Waning Gibbous10Sat
11Sun2:3110.83:0910.18:49-1.09:12-0.15:098:22Waning Gibbous11Sun
12Mon3:2610.24:0310.09:41-0.510:100.25:108:21Third Quarter12Mon
13Tue4:249.64:579.810:340.011:100.45:118:20Third Quarter13Tue
14Wed5:229.05:519.511:270.65:118:20Third Quarter14Wed
15Thu6:228.46:469.312:110.712:221.15:128:19Third Quarter15Thu
16Fri7:238.17:429.21:120.91:191.55:138:18Waning Crescent16Fri
17Sat8:237.98:379.22:140.92:161.75:148:18Waning Crescent17Sat
18Sun9:187.99:289.23:100.93:101.75:158:17Waning Crescent18Sun
19Mon10:088.010:149.44:000.73:581.65:168:16Waning Crescent19Mon
20Tue10:538.110:579.54:440.64:411.55:178:15New Moon20Tue
21Wed11:358.311:379.65:240.45:211.35:188:14New Moon21Wed
22Thu12:148.46:010.35:591.25:198:13New Moon22Thu
23Fri12:159.612:508.66:360.26:361.15:208:13New Moon23Fri
24Sat12:519.71:248.87:080.17:131.05:218:12Waxing Crescent24Sat
25Sun1:269.61:579.07:410.17:510.85:228:11Waxing Crescent25Sun
26Mon2:039.52:319.18:150.18:310.75:238:10Waxing Crescent26Mon
27Tue2:419.33:099.38:530.29:150.65:248:08Waxing Crescent27Tue
28Wed3:249.13:509.59:340.310:040.65:258:07First Quarter28Wed
29Thu4:128.84:379.610:190.510:570.55:268:06First Quarter29Thu
30Fri5:068.65:309.811:100.611:540.45:278:05First Quarter30Fri
31Sat6:058.46:289.912:060.85:288:04First 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 4:48 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 spring phase. Tonight's moon is 7% 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 maximum.

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 Waxing Crescent (7% illuminated). This places South Harpswell, ME in a spring tide cycle, so tidal ranges are near their weekly maximum 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