Tides Today & Tomorrow in Atlantic Heights, NH

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Atlantic Heights, NH.
Next low tide : in 22m at 11:48 am (0.7 ft)
Next high tide : 6:18 pm (7.8 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:22 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8423635
Common Questions About Tides

Atlantic Heights, NH Tides - Oct 2066

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:298.210:518.54:05-0.24:27-0.26:416:24Waxing Gibbous1Fri
2Sat11:188.511:428.54:55-0.35:19-0.56:426:22Full Moon2Sat
3Sun12:038.75:41-0.36:08-0.66:436:20Full Moon3Sun
4Mon12:318.412:478.76:25-0.26:54-0.66:446:18Full Moon4Mon
5Tue1:178.21:288.67:070.17:38-0.56:456:17Waning Gibbous5Tue
6Wed2:017.92:098.47:480.48:21-0.26:466:15Waning Gibbous6Wed
7Thu2:447.52:518.18:290.79:050.26:476:13Waning Gibbous7Thu
8Fri3:297.23:357.89:121.19:520.56:496:11Waning Gibbous8Fri
9Sat4:176.84:237.59:591.410:420.86:506:10Third Quarter9Sat
10Sun5:106.65:177.210:501.611:361.16:516:08Third Quarter10Sun
11Mon6:056.46:147.011:461.76:526:06Third Quarter11Mon
12Tue7:006.47:117.012:321.212:431.86:536:05Third Quarter12Tue
13Wed7:556.68:087.11:271.21:421.66:546:03Waning Crescent13Wed
14Thu8:476.89:027.22:201.12:381.46:566:01Waning Crescent14Thu
15Fri9:327.29:507.43:070.93:281.06:576:00Waning Crescent15Fri
16Sat10:137.610:347.73:490.74:120.56:585:58Waning Crescent16Sat
17Sun10:518.011:167.84:290.44:540.16:595:56New Moon17Sun
18Mon11:298.411:588.05:070.25:35-0.37:005:55New Moon18Mon
19Tue12:098.75:470.16:18-0.67:025:53New Moon19Tue
20Wed12:428.112:508.96:290.07:03-0.87:035:52New Moon20Wed
21Thu1:278.11:359.07:140.07:50-0.87:045:50Waxing Crescent21Thu
22Fri2:148.02:239.08:010.18:40-0.77:055:49Waxing Crescent22Fri
23Sat3:057.83:158.88:520.29:35-0.57:075:47Waxing Crescent23Sat
24Sun4:027.64:148.59:490.410:35-0.37:085:46First Quarter24Sun
25Mon5:057.45:208.310:520.611:390.07:095:44First Quarter25Mon
26Tue6:117.46:288.011:590.77:105:43First Quarter26Tue
27Wed7:167.57:377.912:440.11:090.77:125:41Waxing Gibbous27Wed
28Thu8:207.78:447.91:490.22:190.57:135:40Waxing Gibbous28Thu
29Fri9:188.09:447.92:500.13:220.17:145:38Waxing Gibbous29Fri
30Sat10:108.310:388.03:450.14:17-0.27:155:37Waxing Gibbous30Sat
31Sun10:578.511:287.94:340.15:07-0.47:175:36Full Moon31Sun
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 3:03 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 Atlantic Heights, NH?

Atlantic Heights, NH 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 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 (52% illuminated). This places Atlantic Heights, NH 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