Nearby Harbors
43.0900’ N, 70.7633’ W

Atlantic Heights, NH

56°
H -°
L 50°
NNE
6mph
Low tide
3:03 am

Tides Today & Tomorrow in Atlantic Heights, NH

TIDE TIMES for Monday, September 21, 2026
The tide is currently falling in Atlantic Heights, NH.
Next low tide (tomorrow) : in 3h 52m at 3:03 am (1.1 ft)
Next high tide (tomorrow) : 9:24 am (6.5 ft)
Sunset today : 6:42 pm
Sunrise tomorrow : 6:29 am
Moon phase : Waxing Gibbous (75% illuminated)
Tide Station Location : Station #8423635
Common Questions About Tides

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Atlantic Heights, NH Tides - Oct 1877

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon5:426.65:587.811:281.25:445:28Third Quarter1Mon
2Tue6:506.97:078.012:220.512:371.05:455:26Waning Crescent2Tue
3Wed7:547.38:138.31:280.21:450.55:465:24Waning Crescent3Wed
4Thu8:527.99:138.62:27-0.22:470.05:485:23Waning Crescent4Thu
5Fri9:448.510:088.83:20-0.53:43-0.55:495:21New Moon5Fri
6Sat10:338.911:018.94:10-0.74:37-1.05:505:19New Moon6Sat
7Sun11:219.211:528.84:58-0.75:28-1.25:515:17New Moon7Sun
8Mon12:089.35:45-0.66:18-1.25:525:16Waxing Crescent8Mon
9Tue12:438.512:559.16:32-0.37:08-0.95:535:14Waxing Crescent9Tue
10Wed1:338.11:428.87:200.17:58-0.65:555:12Waxing Crescent10Wed
11Thu2:257.72:328.48:090.68:52-0.15:565:11Waxing Crescent11Thu
12Fri3:207.23:287.99:021.09:500.45:575:09First Quarter12Fri
13Sat4:196.84:277.510:011.410:510.85:585:07First Quarter13Sat
14Sun5:196.65:297.211:021.611:531.05:595:06First Quarter14Sun
15Mon6:196.56:317.112:061.76:015:04First Quarter15Mon
16Tue7:176.67:307.112:531.11:081.66:025:02Waxing Gibbous16Tue
17Wed8:096.88:237.21:471.02:041.46:035:01Waxing Gibbous17Wed
18Thu8:547.19:107.32:330.92:521.16:044:59Waxing Gibbous18Thu
19Fri9:347.49:527.43:130.83:340.76:054:58Waxing Gibbous19Fri
20Sat10:107.710:317.53:490.74:120.56:074:56Full Moon20Sat
21Sun10:437.911:097.54:220.74:480.26:084:54Full Moon21Sun
22Mon11:168.111:467.54:550.75:240.16:094:53Full Moon22Mon
23Tue11:508.25:290.76:00-0.16:104:51Full Moon23Tue
24Wed12:237.412:258.26:050.76:39-0.16:124:50Waning Gibbous24Wed
25Thu1:027.31:038.26:440.87:210.06:134:48Waning Gibbous25Thu
26Fri1:437.11:478.27:270.98:070.16:144:47Waning Gibbous26Fri
27Sat2:307.02:368.18:151.09:000.26:154:45Waning Gibbous27Sat
28Sun3:256.93:348.09:101.19:580.36:174:44Third Quarter28Sun
29Mon4:266.84:387.910:111.111:000.36:184:43Third Quarter29Mon
30Tue5:307.05:457.811:181.06:194:41Third Quarter30Tue
31Wed6:347.36:547.912:030.312:270.86:214:40Waning Crescent31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8423635)

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The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
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Common Questions About Atlantic Heights, NH Tides

Collapse All
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 75% 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 Waxing Gibbous (75% 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

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