Nearby Harbors
43.0783’ N, 70.7517’ W

Portsmouth, NH

63°
H 64°
L 54°
S
4mph
Low tide
3:09 pm
Photo Credits

Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Friday, November 6, 2026
The tide is currently falling in Portsmouth, NH.
Next low tide : in 1h 56m at 3:09 pm (0.0 ft)
Next high tide : 9:26 pm (8.1 ft)
Sunset today : 4:28 pm
Sunrise tomorrow : 6:24 am
Moon phase : Waning Crescent (7% illuminated)
Tide Station Location : Station #8423745
Common Questions About Tides

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Portsmouth, NH Tides - Jul 1814

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:507.410:518.54:340.24:331.14:107:30Full Moon1Fri
2Sat11:317.411:308.55:140.25:121.14:117:29Full Moon2Sat
3Sun12:107.45:510.25:491.24:117:29Full Moon3Sun
4Mon12:078.512:477.46:260.26:261.24:127:29Full Moon4Mon
5Tue12:438.41:247.47:010.27:041.24:127:29Waning Gibbous5Tue
6Wed1:208.32:007.47:370.27:431.24:137:28Waning Gibbous6Wed
7Thu1:588.22:397.58:150.38:251.24:147:28Waning Gibbous7Thu
8Fri2:398.13:197.68:550.39:121.14:147:28Waning Gibbous8Fri
9Sat3:258.04:037.89:380.310:011.04:157:27Third Quarter9Sat
10Sun4:147.84:498.010:240.410:550.84:167:27Third Quarter10Sun
11Mon5:087.75:398.311:140.411:510.64:177:26Third Quarter11Mon
12Tue6:067.76:338.612:070.44:177:26Waning Crescent12Tue
13Wed7:087.87:319.012:520.21:050.34:187:25Waning Crescent13Wed
14Thu8:107.98:289.41:53-0.22:040.24:197:25Waning Crescent14Thu
15Fri9:108.29:259.82:52-0.63:010.04:207:24New Moon15Fri
16Sat10:088.410:2110.03:49-1.03:58-0.34:217:24New Moon16Sat
17Sun11:058.611:1710.14:45-1.34:54-0.44:217:23New Moon17Sun
18Mon12:018.85:39-1.55:50-0.54:227:22New Moon18Mon
19Tue12:1310.112:558.96:33-1.46:46-0.44:237:21Waxing Crescent19Tue
20Wed1:079.91:488.87:25-1.37:41-0.24:247:21Waxing Crescent20Wed
21Thu2:029.52:438.78:18-0.98:390.04:257:20Waxing Crescent21Thu
22Fri2:599.03:388.69:12-0.59:390.34:267:19First Quarter22Fri
23Sat3:588.54:338.410:060.010:390.54:277:18First Quarter23Sat
24Sun4:577.95:288.311:010.411:410.74:287:17First Quarter24Sun
25Mon5:567.56:238.111:560.84:297:16First Quarter25Mon
26Tue6:577.27:188.112:420.812:531.14:307:15Waxing Gibbous26Tue
27Wed7:567.18:118.11:420.81:491.34:317:14Waxing Gibbous27Wed
28Thu8:507.18:598.22:360.72:391.34:327:13Waxing Gibbous28Thu
29Fri9:387.29:448.33:250.53:251.34:337:12Waxing Gibbous29Fri
30Sat10:237.310:268.44:080.44:071.24:347:11Full Moon30Sat
31Sun11:047.411:068.44:480.34:461.14:357:10Full Moon31Sun
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 7% 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 Waning Crescent (7% 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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