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 : in 1h 45m at 11:48 am (0.7 ft)
Next high tide : 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 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon10:339.311:158.14:10-0.24:52-1.36:544:09New Moon1Mon
2Tue11:239.55:00-0.35:43-1.46:554:09New Moon2Tue
3Wed12:088.112:159.55:52-0.36:36-1.46:564:08Waxing Crescent3Wed
4Thu1:018.01:099.46:45-0.27:30-1.26:574:08Waxing Crescent4Thu
5Fri1:577.92:069.07:410.08:27-0.96:584:08Waxing Crescent5Fri
6Sat2:567.73:078.68:400.39:27-0.56:594:08First Quarter6Sat
7Sun3:587.54:128.29:450.610:29-0.17:004:08First Quarter7Sun
8Mon5:017.55:187.710:530.711:300.27:014:08First Quarter8Mon
9Tue6:037.56:247.412:020.87:024:08First Quarter9Tue
10Wed7:027.67:297.212:300.41:090.77:034:08Waxing Gibbous10Wed
11Thu7:587.78:297.11:290.62:100.57:044:08Waxing Gibbous11Thu
12Fri8:487.89:227.02:230.83:040.37:054:08Waxing Gibbous12Fri
13Sat9:337.910:107.03:110.93:510.17:064:08Waxing Gibbous13Sat
14Sun10:158.010:547.03:541.04:340.07:064:08Full Moon14Sun
15Mon10:558.011:367.04:341.05:140.07:074:08Full Moon15Mon
16Tue11:337.95:121.15:520.17:084:09Full Moon16Tue
17Wed12:156.912:117.95:491.16:290.17:084:09Full Moon17Wed
18Thu12:526.812:477.86:261.27:050.27:094:09Waning Gibbous18Thu
19Fri1:296.81:247.77:031.27:410.37:104:10Waning Gibbous19Fri
20Sat2:066.72:027.67:421.38:190.47:104:10Waning Gibbous20Sat
21Sun2:456.72:437.48:231.38:590.57:114:10Waning Gibbous21Sun
22Mon3:276.73:287.39:091.39:420.57:114:11Third Quarter22Mon
23Tue4:116.84:187.19:591.310:270.67:124:12Third Quarter23Tue
24Wed4:577.15:117.010:521.111:150.67:124:12Third Quarter24Wed
25Thu5:457.36:087.011:490.87:134:13Third Quarter25Thu
26Fri6:367.77:087.012:060.612:480.57:134:13Waning Crescent26Fri
27Sat7:308.18:107.21:010.51:480.07:134:14Waning Crescent27Sat
28Sun8:258.59:087.41:580.42:46-0.57:134:15Waning Crescent28Sun
29Mon9:198.910:047.62:540.23:41-0.97:144:16New Moon29Mon
30Tue10:149.310:597.83:48-0.14:35-1.27:144:16New Moon30Tue
31Wed11:089.511:557.94:42-0.35:30-1.47:144:17New Moon31Wed
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 3:03 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