Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Sunday, June 14, 2026
The tide is currently rising in Portsmouth, NH.
Next low tide : 5:01 pm (0.1 ft)
Next high tide : in 5h 11m at 11:14 am (8.2 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:02 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8423745
Common Questions About Tides

Portsmouth, NH Tides - Mar 2013

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:158.91:408.57:23-0.67:41-0.46:185:32Waning Gibbous1Fri
2Sat1:588.92:278.28:10-0.68:27-0.26:165:33Waning Gibbous2Sat
3Sun2:468.83:217.99:03-0.49:200.16:145:34Third Quarter3Sun
4Mon3:418.74:227.610:01-0.210:180.36:135:36Third Quarter4Mon
5Tue4:428.55:297.411:050.011:230.56:115:37Third Quarter5Tue
6Wed5:508.46:407.412:140.06:095:38Waning Crescent6Wed
7Thu7:018.47:497.612:330.61:25-0.16:085:39Waning Crescent7Thu
8Fri8:098.68:508.01:430.32:29-0.36:065:40Waning Crescent8Fri
9Sat9:098.99:458.42:470.03:25-0.66:045:42Waning Crescent9Sat
10Sun11:049.011:348.74:43-0.45:15-0.87:026:43New Moon10Sun
11Mon11:549.15:35-0.76:01-0.87:016:44New Moon11Mon
12Tue12:208.912:429.06:23-0.86:45-0.76:596:45New Moon12Tue
13Wed1:039.01:268.87:08-0.87:26-0.56:576:47New Moon13Wed
14Thu1:448.92:098.57:51-0.68:06-0.16:556:48Waxing Crescent14Thu
15Fri2:248.72:528.18:33-0.48:460.36:546:49Waxing Crescent15Fri
16Sat3:048.43:367.79:170.09:280.76:526:50Waxing Crescent16Sat
17Sun3:478.14:247.210:030.410:131.16:506:51First Quarter17Sun
18Mon4:357.75:156.910:530.711:031.46:486:53First Quarter18Mon
19Tue5:277.46:106.711:461.011:571.66:476:54First Quarter19Tue
20Wed6:237.37:096.612:441.26:456:55First Quarter20Wed
21Thu7:227.28:086.712:561.71:441.26:436:56First Quarter21Thu
22Fri8:227.39:027.01:571.62:401.06:416:57Waxing Gibbous22Fri
23Sat9:157.69:497.32:541.33:290.76:406:58Waxing Gibbous23Sat
24Sun10:037.910:307.83:430.94:110.46:387:00Waxing Gibbous24Sun
25Mon10:478.211:098.24:270.44:500.16:367:01Full Moon25Mon
26Tue11:298.511:488.75:09-0.15:29-0.26:347:02Full Moon26Tue
27Wed12:118.75:51-0.56:09-0.46:327:03Full Moon27Wed
28Thu12:279.012:548.86:34-0.96:50-0.66:317:04Full Moon28Thu
29Fri1:089.31:388.87:18-1.17:34-0.66:297:05Waning Gibbous29Fri
30Sat1:519.42:248.78:05-1.18:20-0.46:277:07Waning Gibbous30Sat
31Sun2:379.43:158.48:54-1.09:10-0.26:257:08Waning Gibbous31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8423745)

Common Questions About Portsmouth, NH Tides

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What time does the tide turn (slack tide) in Portsmouth, NH today?

Slack tide in Portsmouth, NH is approximately 2:07 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 Portsmouth, NH?

Portsmouth, NH is currently in a spring phase. Tonight's moon is 0% 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 maximum.

What datum are Portsmouth, 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 Portsmouth, NH?

Tide predictions for Portsmouth, 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 Portsmouth, NH?

Tide data for Portsmouth, NH is sourced from NOAA Station #8423745. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8423745.

What is the moon phase in Portsmouth, NH tonight?

Tonight the moon over Portsmouth, NH is New Moon (0% illuminated). This places Portsmouth, NH in a spring tide cycle, so tidal ranges are near their weekly maximum 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