Tides Today & Tomorrow in South Bristol, Walpole, ME

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in South Bristol, Walpole, ME.
Next low tide (tomorrow) : in 2h 19m at 12:04 am (0.9 ft)
Next high tide (tomorrow) : 6:11 am (8.2 ft)
Sunset today : 8:13 pm
Sunrise tomorrow : 5:15 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8416721
Common Questions About Tides

South Bristol, Walpole, ME Tides - May 2066

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:078.74:567.810:371.010:482.05:297:41First Quarter1Sat
2Sun4:598.55:467.911:251.111:421.95:277:42First Quarter2Sun
3Mon5:538.46:378.112:161.25:267:43First Quarter3Mon
4Tue6:498.47:288.512:391.71:071.15:257:44Waxing Gibbous4Tue
5Wed7:468.58:179.01:371.41:590.95:237:46Waxing Gibbous5Wed
6Thu8:428.89:049.62:320.82:490.65:227:47Waxing Gibbous6Thu
7Fri9:339.19:4910.23:240.13:370.35:217:48Waxing Gibbous7Fri
8Sat10:249.410:3610.84:14-0.54:240.05:197:49Full Moon8Sat
9Sun11:149.611:2311.15:03-1.15:12-0.25:187:50Full Moon9Sun
10Mon12:059.85:53-1.46:02-0.35:177:51Full Moon10Mon
11Tue12:1311.412:579.86:44-1.66:53-0.35:167:53Waning Gibbous11Tue
12Wed1:0511.41:509.77:36-1.57:47-0.15:157:54Waning Gibbous12Wed
13Thu1:5911.22:469.68:30-1.38:430.15:137:55Waning Gibbous13Thu
14Fri2:5610.83:469.49:28-1.09:450.45:127:56Waning Gibbous14Fri
15Sat3:5810.34:499.310:28-0.610:500.65:117:57Third Quarter15Sat
16Sun5:049.85:519.311:30-0.211:570.85:107:58Third Quarter16Sun
17Mon6:099.46:529.312:310.25:097:59Third Quarter17Mon
18Tue7:159.17:519.51:050.81:320.45:088:00Waning Crescent18Tue
19Wed8:198.98:469.62:110.62:300.65:078:01Waning Crescent19Wed
20Thu9:168.89:359.83:100.43:220.85:068:02Waning Crescent20Thu
21Fri10:088.810:199.84:010.14:080.95:068:03Waning Crescent21Fri
22Sat10:558.711:019.84:480.04:511.05:058:04New Moon22Sat
23Sun11:398.711:419.85:30-0.15:311.15:048:05New Moon23Sun
24Mon12:208.66:100.06:101.25:038:06New Moon24Mon
25Tue12:199.712:598.56:480.16:471.35:028:07New Moon25Tue
26Wed12:569.61:378.47:250.27:241.45:028:08Waxing Crescent26Wed
27Thu1:339.52:158.38:010.38:021.55:018:09Waxing Crescent27Thu
28Fri2:119.32:548.38:390.48:431.65:008:10Waxing Crescent28Fri
29Sat2:519.23:358.29:190.69:271.75:008:11Waxing Crescent29Sat
30Sun3:349.04:188.310:000.710:151.74:598:12First Quarter30Sun
31Mon4:218.85:038.510:440.811:051.64:598:13First Quarter31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8416721)

Common Questions About South Bristol, Walpole, ME Tides

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What time does the tide turn (slack tide) in South Bristol, Walpole, ME today?

Slack tide in South Bristol, Walpole, ME is approximately 3:07 am — 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 Bristol, Walpole, ME?

South Bristol, Walpole, ME is currently in a neap phase. Tonight's moon is 52% 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 minimum.

What datum are South Bristol, Walpole, 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 Bristol, Walpole, ME?

Tide predictions for South Bristol, Walpole, 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 Bristol, Walpole, ME?

Tide data for South Bristol, Walpole, ME is sourced from NOAA Station #8416721. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8416721.

What is the moon phase in South Bristol, Walpole, ME tonight?

Tonight the moon over South Bristol, Walpole, ME is First Quarter (52% illuminated). This places South Bristol, Walpole, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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