Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 6:24 pm (-0.1 ft)
Next high tide : in 3h 42m at 12:32 pm (9.6 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:12 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - May 1990

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:429.85:358.711:11-0.111:301.15:327:42First Quarter1Tue
2Wed5:509.36:398.712:150.35:307:43First Quarter2Wed
3Thu6:579.07:408.812:401.21:180.65:297:44First Quarter3Thu
4Fri8:018.88:369.01:481.22:170.75:277:45Waxing Gibbous4Fri
5Sat9:008.79:259.22:490.93:090.85:267:46Waxing Gibbous5Sat
6Sun9:528.710:099.43:420.63:550.95:257:48Waxing Gibbous6Sun
7Mon10:388.710:489.54:280.44:351.05:237:49Waxing Gibbous7Mon
8Tue11:218.611:259.65:100.25:131.15:227:50Full Moon8Tue
9Wed12:018.65:480.15:491.25:217:51Full Moon9Wed
10Thu12:019.612:398.56:240.16:241.35:207:52Full Moon10Thu
11Fri12:369.51:168.47:000.26:591.45:197:53Full Moon11Fri
12Sat1:119.51:538.37:350.37:351.55:177:54Waning Gibbous12Sat
13Sun1:479.42:308.18:120.48:131.65:167:56Waning Gibbous13Sun
14Mon2:259.23:118.08:510.58:551.75:157:57Waning Gibbous14Mon
15Tue3:079.13:558.09:340.69:421.85:147:58Waning Gibbous15Tue
16Wed3:549.04:428.110:200.710:331.75:137:59Third Quarter16Wed
17Thu4:458.95:318.311:090.711:291.55:128:00Third Quarter17Thu
18Fri5:408.96:238.712:000.65:118:01Third Quarter18Fri
19Sat6:388.97:159.212:271.212:530.55:108:02Waning Crescent19Sat
20Sun7:399.08:099.81:270.71:480.45:098:03Waning Crescent20Sun
21Mon8:409.29:0210.42:270.12:420.25:088:04Waning Crescent21Mon
22Tue9:389.49:5311.03:25-0.63:36-0.15:078:05Waning Crescent22Tue
23Wed10:349.710:4511.34:19-1.14:29-0.25:068:06New Moon23Wed
24Thu11:299.811:3911.55:13-1.55:22-0.35:068:07New Moon24Thu
25Fri12:259.86:07-1.76:16-0.35:058:08New Moon25Fri
26Sat12:3311.51:209.87:02-1.67:10-0.15:048:09Waxing Crescent26Sat
27Sun1:2811.32:159.67:56-1.48:060.25:038:10Waxing Crescent27Sun
28Mon2:2410.93:129.48:52-1.09:050.55:038:11Waxing Crescent28Mon
29Tue3:2210.44:129.29:49-0.610:070.85:028:12First Quarter29Tue
30Wed4:239.85:119.110:47-0.111:101.05:028:13First Quarter30Wed
31Thu5:259.36:089.011:440.35:018:13First Quarter31Thu
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 3:28 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 spring phase. Tonight's moon is 2% 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 New Moon (2% 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