Tides Today & Tomorrow in Atlantic Heights, NH

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Atlantic Heights, NH.
Next low tide : in 1h 53m at 10:17 am (0.6 ft)
Next high tide : 4:44 pm (7.8 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 - Jun 1945

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:448.14:327.210:040.010:171.05:068:15Waning Gibbous1Fri
2Sat4:368.05:257.310:550.011:131.05:058:16Third Quarter2Sat
3Sun5:337.96:207.511:490.05:058:16Third Quarter3Sun
4Mon6:337.97:177.812:130.812:450.05:048:17Third Quarter4Mon
5Tue7:377.98:158.21:160.51:430.05:048:18Waning Crescent5Tue
6Wed8:427.99:128.72:210.22:42-0.15:048:19Waning Crescent6Wed
7Thu9:448.110:079.03:23-0.33:39-0.25:038:19Waning Crescent7Thu
8Fri10:438.210:599.34:21-0.74:33-0.35:038:20New Moon8Fri
9Sat11:398.311:519.55:16-1.15:26-0.35:038:20New Moon9Sat
10Sun12:348.36:09-1.26:18-0.25:038:21New Moon10Sun
11Mon12:439.41:278.27:01-1.27:100.05:028:22New Moon11Mon
12Tue1:349.32:198.07:52-1.18:010.25:028:22Waxing Crescent12Tue
13Wed2:259.03:107.88:43-0.88:530.55:028:23Waxing Crescent13Wed
14Thu3:168.64:037.69:34-0.49:460.85:028:23Waxing Crescent14Thu
15Fri4:098.24:567.410:270.010:421.15:028:24First Quarter15Fri
16Sat5:047.75:507.311:190.311:401.35:028:24First Quarter16Sat
17Sun5:597.46:417.212:100.65:028:24First Quarter17Sun
18Mon6:557.17:337.212:371.41:010.95:028:25First Quarter18Mon
19Tue7:526.98:237.31:361.31:521.15:038:25Waxing Gibbous19Tue
20Wed8:486.89:117.52:331.22:421.25:038:25Waxing Gibbous20Wed
21Thu9:406.89:567.73:251.03:291.25:038:25Waxing Gibbous21Thu
22Fri10:296.810:377.84:120.84:121.25:038:26Waxing Gibbous22Fri
23Sat11:146.911:178.04:540.54:521.15:038:26Waxing Gibbous23Sat
24Sun11:567.011:568.15:340.35:321.15:048:26Full Moon24Sun
25Mon12:387.16:130.16:121.05:048:26Full Moon25Mon
26Tue12:368.31:187.26:53-0.16:530.95:048:26Full Moon26Tue
27Wed1:168.41:597.37:33-0.27:350.85:058:26Waning Gibbous27Wed
28Thu1:578.52:407.48:14-0.38:200.75:058:26Waning Gibbous28Thu
29Fri2:418.53:247.58:58-0.39:080.65:068:26Waning Gibbous29Fri
30Sat3:288.44:137.79:44-0.310:000.65:068:26Waning Gibbous30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8423635)

Common Questions About Atlantic Heights, NH Tides

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

Slack tide in Atlantic Heights, NH is approximately 1:30 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 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