Tides Today & Tomorrow in Atlantic Heights, NH

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Atlantic Heights, NH.
Next low tide : 10:17 am (0.6 ft)
Next high tide : in 2h 51m at 4:24 am (7.5 ft)
Sunset today : 7:41 pm
Sunrise tomorrow : 5:52 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8423635
Common Questions About Tides

Atlantic Heights, NH Tides - Nov 1945

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu9:167.69:357.62:540.43:170.66:174:35Waning Crescent1Thu
2Fri9:587.810:197.63:370.44:010.46:184:34Waning Crescent2Fri
3Sat10:367.911:007.64:160.54:410.26:204:33New Moon3Sat
4Sun11:118.011:387.54:510.65:180.16:214:31New Moon4Sun
5Mon11:448.05:240.75:520.16:224:30New Moon5Mon
6Tue12:157.412:178.05:570.86:270.26:244:29New Moon6Tue
7Wed12:507.312:507.96:310.97:010.26:254:28Waxing Crescent7Wed
8Thu1:267.11:247.87:061.17:380.46:264:27Waxing Crescent8Thu
9Fri2:046.92:027.77:441.28:190.56:274:25Waxing Crescent9Fri
10Sat2:456.72:457.58:271.49:050.66:294:24Waxing Crescent10Sat
11Sun3:326.63:357.59:151.59:550.66:304:23First Quarter11Sun
12Mon4:256.64:307.410:091.410:490.66:314:22First Quarter12Mon
13Tue5:206.85:307.511:071.311:460.56:334:21First Quarter13Tue
14Wed6:177.16:327.612:091.06:344:20First Quarter14Wed
15Thu7:147.67:357.912:440.31:120.56:354:19Waxing Gibbous15Thu
16Fri8:108.18:348.21:410.02:12-0.16:364:18Waxing Gibbous16Fri
17Sat9:018.79:308.52:35-0.33:08-0.76:384:18Waxing Gibbous17Sat
18Sun9:519.210:248.73:27-0.64:01-1.26:394:17Full Moon18Sun
19Mon10:419.611:188.74:17-0.84:54-1.56:404:16Full Moon19Mon
20Tue11:329.75:08-0.85:46-1.76:414:15Full Moon20Tue
21Wed12:118.712:239.75:59-0.66:39-1.66:434:14Waning Gibbous21Wed
22Thu1:058.51:159.46:51-0.47:32-1.36:444:14Waning Gibbous22Thu
23Fri2:008.22:099.07:450.08:28-0.96:454:13Waning Gibbous23Fri
24Sat2:577.83:088.58:420.49:27-0.46:464:12Third Quarter24Sat
25Sun3:587.54:108.09:440.710:280.06:474:12Third Quarter25Sun
26Mon4:597.35:137.610:491.011:290.36:494:11Third Quarter26Mon
27Tue6:007.26:167.411:541.16:504:11Third Quarter27Tue
28Wed6:587.27:187.212:290.612:591.16:514:10Waning Crescent28Wed
29Thu7:527.48:157.11:260.71:580.96:524:10Waning Crescent29Thu
30Fri8:417.59:067.12:170.82:490.76:534:09Waning Crescent30Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8423635)

Common Questions About Atlantic Heights, NH Tides

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What time does the tide turn (slack tide) in Atlantic Heights, NH today?

Slack tide in Atlantic Heights, NH is approximately 7:20 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 Atlantic Heights, NH?

Atlantic Heights, NH is currently in a transitional phase. Tonight's moon is 36% 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 Atlantic Heights, NH 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 Atlantic Heights, NH?

Tide predictions for Atlantic Heights, NH 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 Atlantic Heights, NH?

Tide data for Atlantic Heights, NH is sourced from NOAA Station #8423635. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8423635.

What is the moon phase in Atlantic Heights, NH tonight?

Tonight the moon over Atlantic Heights, NH is First Quarter (36% illuminated). This places Atlantic Heights, NH 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