Tides Today & Tomorrow in Atlantic Heights, NH

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Atlantic Heights, NH.
Next low tide : in 3h 53m at 10:55 pm (0.6 ft)
Next high tide (tomorrow) : 5:17 am (7.0 ft)
Sunset today : 7:41 pm
Sunrise tomorrow : 5:52 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8423635
Common Questions About Tides

Atlantic Heights, NH Tides - Apr 1944

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:577.37:456.712:301.31:180.76:247:09First Quarter1Sat
2Sun8:007.18:476.71:361.42:220.86:227:10Waxing Gibbous2Sun
3Mon9:017.29:416.92:401.43:190.76:217:11Waxing Gibbous3Mon
4Tue9:557.310:287.13:361.24:080.66:197:12Waxing Gibbous4Tue
5Wed10:427.511:097.34:230.94:490.56:177:13Waxing Gibbous5Wed
6Thu11:247.611:477.65:050.65:260.46:157:14Waxing Gibbous6Thu
7Fri12:037.75:430.46:000.36:147:16Full Moon7Fri
8Sat12:217.812:407.76:180.26:320.36:127:17Full Moon8Sat
9Sun12:547.91:167.76:530.17:050.36:107:18Full Moon9Sun
10Mon1:268.01:507.67:27-0.17:380.46:097:19Full Moon10Mon
11Tue1:588.12:267.58:03-0.18:140.56:077:20Waning Gibbous11Tue
12Wed2:328.13:057.48:42-0.18:530.66:057:21Waning Gibbous12Wed
13Thu3:118.13:497.29:26-0.19:380.76:047:23Waning Gibbous13Thu
14Fri3:568.04:397.110:140.010:290.86:027:24Third Quarter14Fri
15Sat4:497.95:367.011:090.111:260.96:007:25Third Quarter15Sat
16Sun5:487.96:397.112:090.25:597:26Third Quarter16Sun
17Mon6:547.97:457.312:290.91:130.15:577:27Third Quarter17Mon
18Tue8:028.08:507.61:360.72:19-0.15:557:28Waning Crescent18Tue
19Wed9:108.29:498.12:440.33:21-0.35:547:30Waning Crescent19Wed
20Thu10:118.510:438.63:47-0.24:16-0.65:527:31Waning Crescent20Thu
21Fri11:088.811:339.04:44-0.75:08-0.85:517:32New Moon21Fri
22Sat12:028.95:37-1.15:58-0.95:497:33New Moon22Sat
23Sun12:229.312:548.86:29-1.36:46-0.75:477:34New Moon23Sun
24Mon1:109.31:448.67:19-1.37:34-0.55:467:35Waxing Crescent24Mon
25Tue1:579.22:348.38:08-1.28:21-0.15:447:37Waxing Crescent25Tue
26Wed2:438.93:247.98:57-0.89:100.35:437:38Waxing Crescent26Wed
27Thu3:328.54:177.59:49-0.410:010.85:417:39Waxing Crescent27Thu
28Fri4:248.05:127.110:430.110:571.25:407:40First Quarter28Fri
29Sat5:207.66:106.911:390.511:551.55:397:41First Quarter29Sat
30Sun6:187.37:076.812:370.85:377:42First Quarter30Sun
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 2:06 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 transitional phase. Tonight's moon is 36% 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 (36% 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