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 (tomorrow) : in 2h 32m at 12:31 am (0.8 ft)
Next high tide (tomorrow) : 6:50 am (6.8 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 - Jun 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:547.48:317.61:341.02:010.65:068:15Waning Crescent1Sun
2Mon8:557.29:237.82:380.82:550.85:058:16Waning Crescent2Mon
3Tue9:517.110:097.93:340.73:440.95:058:17Waning Crescent3Tue
4Wed10:417.010:518.04:240.54:281.15:048:17Waning Crescent4Wed
5Thu11:277.011:318.05:090.35:091.25:048:18New Moon5Thu
6Fri12:107.05:500.25:471.25:048:19New Moon6Fri
7Sat12:098.012:506.96:290.26:251.35:038:19New Moon7Sat
8Sun12:468.01:296.97:060.27:011.45:038:20New Moon8Sun
9Mon1:237.92:076.87:420.37:381.45:038:21Waxing Crescent9Mon
10Tue2:007.92:446.88:180.38:161.45:038:21Waxing Crescent10Tue
11Wed2:377.83:236.88:560.48:571.55:038:22Waxing Crescent11Wed
12Thu3:177.74:046.89:360.49:411.55:028:22Waxing Crescent12Thu
13Fri4:007.74:476.910:180.410:291.45:028:23First Quarter13Fri
14Sat4:487.65:337.111:030.511:211.35:028:23First Quarter14Sat
15Sun5:397.56:207.411:500.45:028:24First Quarter15Sun
16Mon6:347.47:107.812:161.012:390.45:028:24First Quarter16Mon
17Tue7:327.48:028.21:140.71:320.45:028:24Waxing Gibbous17Tue
18Wed8:337.48:568.62:140.32:280.45:028:25Waxing Gibbous18Wed
19Thu9:347.59:519.03:14-0.23:240.25:038:25Waxing Gibbous19Thu
20Fri10:337.710:459.34:12-0.64:190.15:038:25Full Moon20Fri
21Sat11:317.911:409.55:07-1.05:140.05:038:26Full Moon21Sat
22Sun12:288.06:03-1.26:100.05:038:26Full Moon22Sun
23Mon12:369.61:248.06:58-1.27:060.05:038:26Full Moon23Mon
24Tue1:329.52:208.07:53-1.28:020.15:048:26Waning Gibbous24Tue
25Wed2:279.23:157.98:47-0.98:590.35:048:26Waning Gibbous25Wed
26Thu3:248.94:117.89:42-0.69:580.55:048:26Waning Gibbous26Thu
27Fri4:228.45:087.810:37-0.310:590.75:058:26Third Quarter27Fri
28Sat5:217.96:037.711:320.15:058:26Third Quarter28Sat
29Sun6:217.56:577.712:010.812:250.55:068:26Third Quarter29Sun
30Mon7:207.17:507.61:030.91:190.95:068:26Third Quarter30Mon
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 3:40 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 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