Tides Today & Tomorrow in Atlantic Heights, NH

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently rising in Atlantic Heights, NH.
Next low tide (tomorrow) : 12:31 am (0.8 ft)
Next high tide : in 1h 25m at 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 - Dec 2066

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:028.311:417.34:410.75:20-0.26:554:09Full Moon1Wed
2Thu11:428.25:210.86:00-0.16:564:08Full Moon2Thu
3Fri12:217.212:218.16:000.96:370.06:574:08Full Moon3Fri
4Sat1:007.112:588.06:371.07:140.16:584:08Waning Gibbous4Sat
5Sun1:387.01:367.87:161.17:510.36:594:08Waning Gibbous5Sun
6Mon2:176.92:167.67:561.28:300.47:004:08Waning Gibbous6Mon
7Tue2:586.82:597.48:391.39:110.67:014:08Waning Gibbous7Tue
8Wed3:406.83:457.19:251.39:540.77:024:08Third Quarter8Wed
9Thu4:256.94:347.010:151.310:390.87:034:08Third Quarter9Thu
10Fri5:117.05:276.811:081.211:270.97:034:08Third Quarter10Fri
11Sat5:587.36:236.812:031.07:044:08Third Quarter11Sat
12Sun6:487.67:216.912:170.91:000.77:054:08Waning Crescent12Sun
13Mon7:407.98:187.11:110.81:570.27:064:08Waning Crescent13Mon
14Tue8:328.49:137.32:050.62:51-0.37:074:08Waning Crescent14Tue
15Wed9:248.810:067.62:580.33:44-0.77:074:08New Moon15Wed
16Thu10:159.210:597.93:500.04:35-1.17:084:09New Moon16Thu
17Fri11:089.411:528.14:42-0.35:27-1.37:094:09New Moon17Fri
18Sat12:019.55:36-0.46:19-1.47:094:09Waxing Crescent18Sat
19Sun12:448.212:559.56:30-0.57:12-1.47:104:10Waxing Crescent19Sun
20Mon1:388.21:509.27:25-0.48:05-1.27:104:10Waxing Crescent20Mon
21Tue2:338.22:488.88:23-0.29:00-0.87:114:11Waxing Crescent21Tue
22Wed3:308.13:498.29:250.09:57-0.47:114:11First Quarter22Wed
23Thu4:298.04:537.710:290.210:550.07:124:12First Quarter23Thu
24Fri5:288.05:587.311:350.311:550.47:124:12First Quarter24Fri
25Sat6:287.97:037.012:420.47:134:13Waxing Gibbous25Sat
26Sun7:277.88:076.912:560.71:470.37:134:14Waxing Gibbous26Sun
27Mon8:247.99:046.91:560.92:450.27:134:14Waxing Gibbous27Mon
28Tue9:157.99:556.92:501.03:360.17:134:15Waxing Gibbous28Tue
29Wed10:018.010:417.03:380.94:210.07:144:16Full Moon29Wed
30Thu10:448.011:237.04:220.95:03-0.17:144:17Full Moon30Thu
31Fri11:248.05:020.95:41-0.17:144:17Full Moon31Fri
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 9:24 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