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 5h 50m 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 - Jul 1944

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:276.78:497.62:081.22:161.15:078:26Waxing Gibbous1Sat
2Sun9:216.89:367.93:020.93:061.15:078:26Waxing Gibbous2Sun
3Mon10:127.010:218.23:510.53:540.95:088:25Waxing Gibbous3Mon
4Tue11:007.211:078.64:380.14:410.75:088:25Full Moon4Tue
5Wed11:487.411:538.95:24-0.35:280.45:098:25Full Moon5Wed
6Thu12:367.76:11-0.66:170.25:108:25Full Moon6Thu
7Fri12:419.11:247.96:59-0.97:070.05:108:24Full Moon7Fri
8Sat1:319.22:138.17:48-1.07:58-0.15:118:24Waning Gibbous8Sat
9Sun2:229.23:048.28:37-1.08:52-0.15:128:23Waning Gibbous9Sun
10Mon3:159.13:588.39:29-0.99:480.05:138:23Waning Gibbous10Mon
11Tue4:128.84:548.310:23-0.710:490.05:138:23Third Quarter11Tue
12Wed5:128.45:528.411:19-0.511:520.15:148:22Third Quarter12Wed
13Thu6:148.16:508.412:16-0.25:158:21Third Quarter13Thu
14Fri7:197.77:508.412:560.11:160.15:168:21Waning Crescent14Fri
15Sat8:257.58:508.42:030.12:170.45:178:20Waning Crescent15Sat
16Sun9:287.49:468.53:070.03:170.55:188:20Waning Crescent16Sun
17Mon10:267.410:398.54:05-0.14:120.65:188:19Waning Crescent17Mon
18Tue11:197.411:288.54:58-0.25:030.65:198:18New Moon18Tue
19Wed12:087.45:47-0.35:500.75:208:17New Moon19Wed
20Thu12:148.512:537.46:32-0.26:340.75:218:16New Moon20Thu
21Fri12:588.41:357.47:13-0.27:160.85:228:16New Moon21Fri
22Sat1:388.32:157.47:52-0.17:560.85:238:15Waxing Crescent22Sat
23Sun2:178.12:537.38:290.18:360.95:248:14Waxing Crescent23Sun
24Mon2:567.93:327.39:060.39:171.05:258:13Waxing Crescent24Mon
25Tue3:367.64:117.39:440.410:001.15:268:12Waxing Crescent25Tue
26Wed4:197.44:527.310:230.610:461.25:278:11First Quarter26Wed
27Thu5:057.15:357.311:050.811:341.25:288:10First Quarter27Thu
28Fri5:536.96:207.311:491.05:298:09First Quarter28Fri
29Sat6:446.77:087.412:241.212:361.15:308:08First Quarter29Sat
30Sun7:406.67:597.61:191.11:281.25:318:07Waxing Gibbous30Sun
31Mon8:386.78:537.92:160.82:231.15:328:06Waxing Gibbous31Mon
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