Nearby Harbors
43.0783’ N, 70.7517’ W

Portsmouth, NH

37°
H 46°
L 32°
NNE
13mph
Low tide
7:22 am
Photo Credits

Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Friday, November 13, 2026
The tide is currently falling in Portsmouth, NH.
Next low tide : in 3h 43m at 7:22 am (1.4 ft)
Next high tide : 1:38 pm (8.0 ft)
Sunset today : 4:21 pm
Sunrise tomorrow : 6:33 am
Moon phase : Waxing Crescent (17% illuminated)
Tide Station Location : Station #8423745
Common Questions About Tides

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Portsmouth, NH Tides - Dec 2069

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:518.91:039.96:42-0.57:22-1.36:554:09Waning Gibbous1Sun
2Mon1:458.71:589.47:37-0.28:16-0.96:564:08Waning Gibbous2Mon
3Tue2:418.42:558.98:340.19:13-0.56:574:08Third Quarter3Tue
4Wed3:398.23:568.39:350.510:100.06:584:08Third Quarter4Wed
5Thu4:388.04:577.910:380.711:080.46:594:08Third Quarter5Thu
6Fri5:357.95:587.511:420.97:004:08Third Quarter6Fri
7Sat6:317.86:597.312:050.712:450.97:014:08Waning Crescent7Sat
8Sun7:267.97:577.21:020.91:440.87:024:07Waning Crescent8Sun
9Mon8:168.08:487.21:551.02:360.67:034:07Waning Crescent9Mon
10Tue9:018.19:357.32:421.03:220.47:044:08Waning Crescent10Tue
11Wed9:438.310:187.43:251.04:030.27:044:08New Moon11Wed
12Thu10:228.410:587.54:040.94:410.17:054:08New Moon12Thu
13Fri11:008.411:367.54:410.95:180.07:064:08New Moon13Fri
14Sat11:368.55:170.85:53-0.17:074:08New Moon14Sat
15Sun12:137.512:128.55:540.86:27-0.17:074:08New Moon15Sun
16Mon12:497.512:488.56:310.87:03-0.17:084:09Waxing Crescent16Mon
17Tue1:257.61:268.47:110.87:42-0.17:094:09Waxing Crescent17Tue
18Wed2:037.62:078.37:530.78:23-0.17:094:09Waxing Crescent18Wed
19Thu2:457.72:548.18:410.79:090.07:104:10First Quarter19Thu
20Fri3:327.93:478.09:330.69:580.17:104:10First Quarter20Fri
21Sat4:238.14:447.810:290.510:520.17:114:11First Quarter21Sat
22Sun5:188.35:467.811:300.311:490.27:114:11First Quarter22Sun
23Mon6:168.66:517.812:330.07:124:12Waxing Gibbous23Mon
24Tue7:178.97:568.012:500.11:38-0.47:124:12Waxing Gibbous24Tue
25Wed8:179.38:588.21:51-0.12:39-0.87:134:13Waxing Gibbous25Wed
26Thu9:149.69:558.52:50-0.33:36-1.27:134:14Full Moon26Thu
27Fri10:099.910:508.73:46-0.54:30-1.57:134:15Full Moon27Fri
28Sat11:0310.011:438.84:40-0.65:23-1.67:134:15Full Moon28Sat
29Sun11:569.95:34-0.66:14-1.57:144:16Waning Gibbous29Sun
30Mon12:358.812:479.66:26-0.57:03-1.37:144:17Waning Gibbous30Mon
31Tue1:258.61:389.27:18-0.37:54-0.97:144:18Waning Gibbous31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8423745)

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Common Questions About Portsmouth, NH Tides

Collapse All
Is this week a spring tide or neap tide in Portsmouth, NH?

Portsmouth, NH is currently in a spring phase. Tonight's moon is 17% 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 Waxing Crescent (17% 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

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