Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 1:04 am (1.1 ft)
Next high tide : in 3h 15m at 6:36 pm (9.1 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:18 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jul 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:569.15:309.611:090.211:430.65:028:25Third Quarter1Tue
2Wed5:529.06:239.812:010.35:038:25Third Quarter2Wed
3Thu6:538.97:2110.212:420.312:580.35:038:25Waning Crescent3Thu
4Fri7:579.08:2110.51:450.01:580.25:048:25Waning Crescent4Fri
5Sat9:019.29:2010.92:48-0.52:590.05:048:24Waning Crescent5Sat
6Sun10:029.510:1811.33:47-0.93:57-0.35:058:24New Moon6Sun
7Mon11:009.811:1411.54:44-1.34:54-0.55:068:24New Moon7Mon
8Tue11:5610.05:39-1.65:50-0.65:078:23New Moon8Tue
9Wed12:0911.512:5010.26:33-1.66:46-0.65:078:23New Moon9Wed
10Thu1:0411.41:4310.27:25-1.57:40-0.55:088:22Waxing Crescent10Thu
11Fri1:5711.02:3510.18:16-1.38:34-0.25:098:22Waxing Crescent11Fri
12Sat2:5010.53:2710.09:07-0.89:300.15:108:21Waxing Crescent12Sat
13Sun3:459.94:219.79:59-0.310:280.45:118:20First Quarter13Sun
14Mon4:419.35:149.510:510.211:260.75:118:20First Quarter14Mon
15Tue5:388.86:079.311:430.75:128:19First Quarter15Tue
16Wed6:358.47:019.112:251.012:371.15:138:18First Quarter16Wed
17Thu7:348.17:559.11:251.11:331.45:148:18Waxing Gibbous17Thu
18Fri8:328.08:479.12:231.02:281.55:158:17Waxing Gibbous18Fri
19Sat9:248.09:359.33:160.93:181.55:168:16Waxing Gibbous19Sat
20Sun10:128.210:209.44:030.74:031.45:178:15Waxing Gibbous20Sun
21Mon10:568.311:019.64:460.54:451.25:188:14Full Moon21Mon
22Tue11:378.511:419.75:250.35:241.15:198:13Full Moon22Tue
23Wed12:168.76:010.16:020.95:208:13Full Moon23Wed
24Thu12:189.812:528.96:360.06:410.85:218:12Full Moon24Thu
25Fri12:559.81:289.07:11-0.17:190.65:228:11Waning Gibbous25Fri
26Sat1:329.82:039.27:47-0.28:000.55:238:10Waning Gibbous26Sat
27Sun2:119.82:429.48:25-0.28:440.45:248:08Waning Gibbous27Sun
28Mon2:549.63:249.69:07-0.19:320.35:258:07Waning Gibbous28Mon
29Tue3:419.44:119.89:520.010:240.35:268:06Third Quarter29Tue
30Wed4:349.25:039.910:430.111:200.25:278:05Third Quarter30Wed
31Thu5:329.05:5910.011:370.25:288:04Third 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 9:50 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 62% 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 First Quarter (62% 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