Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 23, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 2:05 am (1.1 ft)
Next high tide : in 5h 43m at 7:31 pm (8.9 ft)
Sunset today : 8:13 pm
Sunrise tomorrow : 5:19 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Dec 1984

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:438.25:578.211:461.76:544:04First Quarter1Sat
2Sun6:358.36:548.112:141.212:451.66:554:03Waxing Gibbous2Sun
3Mon7:248.67:478.21:051.31:401.36:564:03Waxing Gibbous3Mon
4Tue8:088.98:358.21:511.22:270.96:574:03Waxing Gibbous4Tue
5Wed8:499.19:198.32:331.23:090.66:584:03Waxing Gibbous5Wed
6Thu9:269.410:008.43:111.13:480.36:594:03Full Moon6Thu
7Fri10:039.610:408.53:481.14:260.17:004:03Full Moon7Fri
8Sat10:409.711:198.54:251.05:03-0.17:014:02Full Moon8Sat
9Sun11:179.811:598.55:031.05:42-0.27:024:02Full Moon9Sun
10Mon11:579.95:430.96:23-0.37:034:02Waning Gibbous10Mon
11Tue12:398.512:399.96:260.97:06-0.37:044:03Waning Gibbous11Tue
12Wed1:238.51:259.97:120.97:53-0.37:044:03Waning Gibbous12Wed
13Thu2:118.52:169.78:030.98:44-0.27:054:03Waning Gibbous13Thu
14Fri3:048.63:149.58:590.99:39-0.17:064:03Third Quarter14Fri
15Sat4:018.84:159.310:010.810:350.07:074:03Third Quarter15Sat
16Sun4:599.15:209.111:050.611:340.17:074:03Third Quarter16Sun
17Mon5:599.56:279.012:120.37:084:04Waning Crescent17Mon
18Tue6:589.97:329.112:340.11:17-0.17:094:04Waning Crescent18Tue
19Wed7:5510.38:339.21:330.12:18-0.67:094:05Waning Crescent19Wed
20Thu8:4810.69:299.32:290.03:14-1.07:104:05Waning Crescent20Thu
21Fri9:3910.810:229.43:220.04:06-1.27:104:05New Moon21Fri
22Sat10:3010.811:139.34:130.04:57-1.37:114:06New Moon22Sat
23Sun11:1910.75:030.15:45-1.27:114:07New Moon23Sun
24Mon12:029.212:0610.55:510.36:32-0.97:124:07Waxing Crescent24Mon
25Tue12:499.012:5310.16:380.57:18-0.57:124:08Waxing Crescent25Tue
26Wed1:358.81:399.77:250.88:04-0.17:124:08Waxing Crescent26Wed
27Thu2:238.52:289.28:141.18:510.37:134:09Waxing Crescent27Thu
28Fri3:118.33:188.79:061.49:380.77:134:10First Quarter28Fri
29Sat4:008.24:118.310:001.510:261.07:134:11First Quarter29Sat
30Sun4:508.25:067.910:551.611:141.37:134:11First Quarter30Sun
31Mon5:398.36:027.711:521.67:134:12First Quarter31Mon
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 10:48 pm — 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 71% 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 Waxing Gibbous (71% 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