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 : in 4h 02m at 12:29 pm (0.7 ft)
Next high tide : 6:51 pm (9.9 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 1997

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:359.35:218.511:010.211:220.85:206:06Third Quarter1Tue
2Wed5:409.46:288.812:060.15:196:08Waning Crescent2Wed
3Thu6:489.77:329.312:290.61:11-0.25:176:09Waning Crescent3Thu
4Fri7:5410.08:309.91:360.12:12-0.65:156:10Waning Crescent4Fri
5Sat8:5410.49:2410.52:37-0.63:07-1.05:136:11Waning Crescent5Sat
6Sun10:4910.711:1510.94:33-1.24:58-1.36:127:12New Moon6Sun
7Mon11:4310.95:26-1.65:48-1.36:107:13New Moon7Mon
8Tue12:0511.212:3510.86:18-1.86:37-1.26:087:15New Moon8Tue
9Wed12:5311.21:2510.57:08-1.77:25-0.96:067:16Waxing Crescent9Wed
10Thu1:4111.02:1610.17:58-1.58:14-0.46:057:17Waxing Crescent10Thu
11Fri2:2910.63:089.68:49-1.09:040.26:037:18Waxing Crescent11Fri
12Sat3:2010.14:029.09:42-0.49:580.86:017:19Waxing Crescent12Sat
13Sun4:149.55:008.610:390.110:551.25:597:21First Quarter13Sun
14Mon5:129.05:588.311:370.611:561.65:587:22First Quarter14Mon
15Tue6:128.66:588.112:370.95:567:23First Quarter15Tue
16Wed7:138.47:558.212:581.71:371.15:547:24First Quarter16Wed
17Thu8:128.48:488.42:001.62:321.05:537:25Waxing Gibbous17Thu
18Fri9:068.69:348.72:561.33:200.95:517:27Waxing Gibbous18Fri
19Sat9:538.710:159.03:431.04:020.85:497:28Waxing Gibbous19Sat
20Sun10:368.910:539.34:250.74:390.65:487:29Waxing Gibbous20Sun
21Mon11:169.011:299.65:030.35:140.55:467:30Full Moon21Mon
22Tue11:549.15:390.15:480.55:457:31Full Moon22Tue
23Wed12:039.712:319.26:15-0.16:240.45:437:33Full Moon23Wed
24Thu12:379.91:089.26:52-0.37:000.45:417:34Full Moon24Thu
25Fri1:1310.01:469.17:30-0.47:400.55:407:35Waning Gibbous25Fri
26Sat1:5110.02:289.08:12-0.48:230.65:387:36Waning Gibbous26Sat
27Sun2:3310.03:148.98:57-0.39:110.75:377:37Waning Gibbous27Sun
28Mon3:229.94:078.99:48-0.210:050.85:357:39Third Quarter28Mon
29Tue4:179.75:058.910:44-0.111:040.85:347:40Third Quarter29Tue
30Wed5:199.66:069.011:43-0.15:337:41Third Quarter30Wed
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 3:40 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 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