43.7418’ N, 70.0145’ W

South Harpswell, ME

59°
H -°
L 58°
S
0mph
High tide
4:06 am

Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 9:57 am (1.7 ft)
Next high tide (tomorrow) : in 4h 45m at 4:06 am (8.1 ft)
Sunset today : 6:48 pm
Sunrise tomorrow : 6:20 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - May 1974

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:219.48:019.51:030.61:370.15:327:42Waxing Gibbous1Wed
2Thu8:279.48:589.92:110.32:370.05:307:43Waxing Gibbous2Thu
3Fri9:279.59:5010.23:13-0.13:320.05:297:44Waxing Gibbous3Fri
4Sat10:229.610:3810.54:08-0.54:220.05:287:45Full Moon4Sat
5Sun11:139.511:2410.54:59-0.85:090.15:267:46Full Moon5Sun
6Mon12:019.55:46-0.85:540.35:257:47Full Moon6Mon
7Tue12:0810.512:469.36:31-0.86:370.55:247:49Full Moon7Tue
8Wed12:5010.31:309.17:14-0.67:190.85:227:50Waning Gibbous8Wed
9Thu1:3110.02:128.87:55-0.38:001.15:217:51Waning Gibbous9Thu
10Fri2:139.72:568.58:380.18:441.35:207:52Waning Gibbous10Fri
11Sat2:569.33:418.39:210.49:301.65:197:53Waning Gibbous11Sat
12Sun3:439.04:308.210:070.810:201.85:177:54Third Quarter12Sun
13Mon4:338.75:198.110:551.011:121.95:167:55Third Quarter13Mon
14Tue5:258.46:098.211:431.25:157:56Third Quarter14Tue
15Wed6:198.26:598.312:071.912:321.35:147:58Third Quarter15Wed
16Thu7:158.27:488.61:031.71:221.35:137:59Waning Crescent16Thu
17Fri8:108.28:359.01:591.42:111.25:128:00Waning Crescent17Fri
18Sat9:028.49:199.42:501.02:591.15:118:01Waning Crescent18Sat
19Sun9:508.610:019.93:380.43:440.85:108:02Waning Crescent19Sun
20Mon10:378.910:4510.34:23-0.14:280.65:098:03New Moon20Mon
21Tue11:249.111:3010.75:09-0.55:140.35:088:04New Moon21Tue
22Wed12:119.35:55-0.96:010.25:078:05New Moon22Wed
23Thu12:1710.91:009.56:43-1.16:510.15:078:06Waxing Crescent23Thu
24Fri1:0611.01:509.67:32-1.27:420.05:068:07Waxing Crescent24Fri
25Sat1:5711.02:439.68:24-1.28:360.15:058:08Waxing Crescent25Sat
26Sun2:5210.73:399.69:18-1.09:350.35:048:09Waxing Crescent26Sun
27Mon3:5210.44:399.610:15-0.710:380.45:038:10First Quarter27Mon
28Tue4:559.95:399.611:13-0.411:430.55:038:11First Quarter28Tue
29Wed5:599.66:399.712:13-0.15:028:12First Quarter29Wed
30Thu7:059.27:399.912:500.41:140.25:028:12Waxing Gibbous30Thu
31Fri8:109.18:3610.01:570.32:140.45:018:13Waxing Gibbous31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

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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 Waxing 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