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 2h 20m 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 - Jan 2013

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:367.71:398.37:240.67:52-0.17:144:19Waning Gibbous1Tue
2Wed2:137.72:208.18:070.68:330.07:144:19Waning Gibbous2Wed
3Thu2:547.83:077.98:540.69:180.17:144:20Third Quarter3Thu
4Fri3:408.03:597.79:450.510:070.27:144:21Third Quarter4Fri
5Sat4:308.14:577.610:420.411:000.37:144:22Third Quarter5Sat
6Sun5:268.35:597.511:420.311:590.37:144:23Third Quarter6Sun
7Mon6:258.67:067.512:470.07:144:24Waning Crescent7Mon
8Tue7:288.98:127.81:020.21:53-0.47:134:25Waning Crescent8Tue
9Wed8:309.39:138.12:050.02:54-0.87:134:26Waning Crescent9Wed
10Thu9:289.610:108.43:04-0.33:50-1.27:134:28New Moon10Thu
11Fri10:249.911:058.74:01-0.64:45-1.57:134:29New Moon11Fri
12Sat11:1910.011:588.94:56-0.85:37-1.67:124:30New Moon12Sat
13Sun12:119.95:50-0.86:27-1.57:124:31Waxing Crescent13Sun
14Mon12:488.91:039.66:43-0.87:16-1.37:114:32Waxing Crescent14Mon
15Tue1:388.81:549.17:35-0.58:05-0.97:114:33Waxing Crescent15Tue
16Wed2:288.62:478.68:28-0.28:55-0.47:104:34Waxing Crescent16Wed
17Thu3:208.43:428.09:240.19:460.17:104:36First Quarter17Thu
18Fri4:138.14:397.510:220.510:390.67:094:37First Quarter18Fri
19Sat5:077.95:387.011:220.711:341.07:094:38First Quarter19Sat
20Sun6:027.76:396.812:240.97:084:39First Quarter20Sun
21Mon6:597.67:396.712:331.31:250.97:074:41Waxing Gibbous21Mon
22Tue7:557.78:346.81:311.32:210.77:064:42Waxing Gibbous22Tue
23Wed8:457.89:227.02:241.23:090.57:064:43Waxing Gibbous23Wed
24Thu9:318.010:067.23:111.13:520.37:054:45Waxing Gibbous24Thu
25Fri10:128.210:467.43:520.94:300.17:044:46Full Moon25Fri
26Sat10:518.411:237.64:310.75:06-0.17:034:47Full Moon26Sat
27Sun11:288.511:587.85:080.55:39-0.27:024:48Full Moon27Sun
28Mon12:048.55:450.36:13-0.37:014:50Full Moon28Mon
29Tue12:328.012:408.56:220.26:48-0.47:004:51Waning Gibbous29Tue
30Wed1:068.11:178.57:010.07:24-0.46:594:52Waning Gibbous30Wed
31Thu1:438.31:588.37:440.08:05-0.36:584:54Waning Gibbous31Thu
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