Tides Today & Tomorrow in Atlantic Heights, NH

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Atlantic Heights, NH.
Next low tide (tomorrow) : 1:52 am (1.2 ft)
Next high tide : in 4h 05m at 7:25 pm (7.2 ft)
Sunset today : 7:36 pm
Sunrise tomorrow : 5:55 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8423635
Common Questions About Tides

Atlantic Heights, NH Tides - Dec 1939

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri2:197.82:298.68:070.28:44-0.66:544:09Waning Gibbous1Fri
2Sat3:127.83:258.39:030.39:39-0.46:554:09Third Quarter2Sat
3Sun4:107.84:278.110:040.310:37-0.26:564:09Third Quarter3Sun
4Mon5:107.95:337.911:080.311:37-0.16:574:08Third Quarter4Mon
5Tue6:118.16:407.712:150.26:584:08Waning Crescent5Tue
6Wed7:138.37:467.712:390.01:220.06:594:08Waning Crescent6Wed
7Thu8:128.58:487.81:410.02:25-0.47:004:08Waning Crescent7Thu
8Fri9:078.89:447.92:390.03:22-0.67:014:08Waning Crescent8Fri
9Sat9:588.910:377.93:330.04:14-0.87:024:08New Moon9Sat
10Sun10:478.911:267.94:230.05:03-0.97:034:08New Moon10Sun
11Mon11:348.95:100.05:49-0.87:044:08New Moon11Mon
12Tue12:137.812:198.75:560.26:33-0.77:044:08New Moon12Tue
13Wed12:577.71:028.56:400.37:16-0.47:054:08Waxing Crescent13Wed
14Thu1:407.51:448.27:240.67:57-0.17:064:08Waxing Crescent14Thu
15Fri2:237.32:287.88:080.88:400.27:074:08Waxing Crescent15Fri
16Sat3:087.23:147.58:541.09:240.57:084:09Waxing Crescent16Sat
17Sun3:547.14:047.19:441.210:090.77:084:09First Quarter17Sun
18Mon4:427.04:566.810:361.310:560.97:094:09First Quarter18Mon
19Tue5:317.05:506.611:301.311:451.17:104:09First Quarter19Tue
20Wed6:207.16:466.512:261.27:104:10First Quarter20Wed
21Thu7:117.27:426.612:361.21:221.07:114:10Waxing Gibbous21Thu
22Fri8:017.58:356.71:281.12:150.77:114:11Waxing Gibbous22Fri
23Sat8:487.89:246.92:181.03:020.37:124:11Waxing Gibbous23Sat
24Sun9:328.110:097.23:050.73:47-0.17:124:12Waxing Gibbous24Sun
25Mon10:168.510:547.53:500.44:31-0.57:134:12Full Moon25Mon
26Tue11:018.811:407.84:360.25:16-0.87:134:13Full Moon26Tue
27Wed11:479.05:22-0.16:01-1.07:134:14Full Moon27Wed
28Thu12:258.012:349.16:11-0.36:48-1.27:134:14Waning Gibbous28Thu
29Fri1:128.21:239.17:00-0.47:36-1.17:144:15Waning Gibbous29Fri
30Sat2:018.32:158.87:53-0.48:26-1.07:144:16Waning Gibbous30Sat
31Sun2:548.33:128.58:49-0.39:21-0.87:144:17Third Quarter31Sun
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 10:38 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 65% 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 (65% 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