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 3h 43m 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 - Dec 1945

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:247.79:517.23:010.83:340.46:544:09Waning Crescent1Sat
2Sun10:037.910:337.23:410.84:150.36:554:09New Moon2Sun
3Mon10:408.011:137.24:180.84:530.16:564:08New Moon3Mon
4Tue11:158.011:517.24:540.95:290.16:574:08New Moon4Tue
5Wed11:508.05:290.96:040.06:584:08New Moon5Wed
6Thu12:287.112:258.06:040.96:390.06:594:08New Moon6Thu
7Fri1:057.01:018.06:411.07:160.17:004:08Waxing Crescent7Fri
8Sat1:426.91:397.97:201.07:560.17:014:08Waxing Crescent8Sat
9Sun2:226.92:227.88:031.18:400.27:024:08Waxing Crescent9Sun
10Mon3:076.93:107.78:511.19:280.27:034:08First Quarter10Mon
11Tue3:577.04:047.69:441.010:200.27:044:08First Quarter11Tue
12Wed4:507.25:037.610:430.911:140.27:054:08First Quarter12Wed
13Thu5:467.56:057.611:440.67:064:08First Quarter13Thu
14Fri6:437.97:107.612:110.112:480.37:064:08Waxing Gibbous14Fri
15Sat7:418.38:137.81:100.01:51-0.27:074:08Waxing Gibbous15Sat
16Sun8:378.89:138.02:08-0.22:51-0.77:084:09Waxing Gibbous16Sun
17Mon9:309.210:098.23:04-0.33:46-1.27:094:09Full Moon17Mon
18Tue10:239.411:048.33:57-0.54:40-1.47:094:09Full Moon18Tue
19Wed11:159.611:588.34:50-0.55:33-1.57:104:10Full Moon19Wed
20Thu12:079.55:42-0.46:25-1.57:104:10Full Moon20Thu
21Fri12:508.212:599.26:34-0.37:16-1.27:114:11Waning Gibbous21Fri
22Sat1:428.01:508.97:260.08:07-0.87:114:11Waning Gibbous22Sat
23Sun2:347.72:448.48:200.39:00-0.47:124:12Waning Gibbous23Sun
24Mon3:297.53:407.99:160.69:540.07:124:12Third Quarter24Mon
25Tue4:247.34:387.410:160.910:480.47:134:13Third Quarter25Tue
26Wed5:197.25:367.011:161.111:420.77:134:13Third Quarter26Wed
27Thu6:137.16:356.812:171.17:134:14Third Quarter27Thu
28Fri7:067.27:346.612:361.01:181.07:144:15Waning Crescent28Fri
29Sat7:587.38:306.61:301.12:130.97:144:16Waning Crescent29Sat
30Sun8:457.49:196.72:201.13:020.67:144:16Waning Crescent30Sun
31Mon9:287.610:066.83:051.13:460.47:144:17Waning Crescent31Mon
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