Nearby Harbors
43.0783’ N, 70.7517’ W

Portsmouth, NH

68°
H 72°
L 60°
SSW
9mph
Low tide
2:15 pm
Photo Credits

Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Thursday, November 5, 2026
The tide is currently falling in Portsmouth, NH.
Next low tide : in 5h 00m at 2:15 pm (0.3 ft)
Next high tide : 8:33 pm (8.1 ft)
Sunset today : 4:30 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waning Crescent (13% illuminated)
Tide Station Location : Station #8423745
Common Questions About Tides

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Portsmouth, NH Tides - May 2047

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:538.04:407.010:170.510:271.45:367:43First Quarter1Wed
2Thu4:447.95:327.111:070.611:231.35:347:45First Quarter2Thu
3Fri5:407.96:267.412:000.55:337:46First Quarter3Fri
4Sat6:407.97:227.812:221.112:560.45:327:47First Quarter4Sat
5Sun7:428.08:188.31:240.81:530.25:307:48Waxing Gibbous5Sun
6Mon8:458.29:138.92:270.22:490.05:297:49Waxing Gibbous6Mon
7Tue9:448.510:059.53:26-0.43:43-0.35:287:50Waxing Gibbous7Tue
8Wed10:408.710:569.94:22-0.94:35-0.45:277:51Full Moon8Wed
9Thu11:358.811:4710.15:15-1.45:27-0.55:257:53Full Moon9Thu
10Fri12:308.96:09-1.66:19-0.55:247:54Full Moon10Fri
11Sat12:4010.21:248.87:02-1.67:12-0.35:237:55Waning Gibbous11Sat
12Sun1:3210.02:188.67:55-1.48:060.05:227:56Waning Gibbous12Sun
13Mon2:269.73:148.38:50-1.09:020.35:217:57Waning Gibbous13Mon
14Tue3:239.24:128.09:46-0.610:010.75:207:58Waning Gibbous14Tue
15Wed4:228.75:127.810:45-0.111:041.05:197:59Third Quarter15Wed
16Thu5:248.26:117.711:440.35:188:00Third Quarter16Thu
17Fri6:267.87:097.712:081.112:420.65:178:01Third Quarter17Fri
18Sat7:277.58:047.71:121.21:380.95:168:02Third Quarter18Sat
19Sun8:277.38:557.92:141.12:321.05:158:03Waning Crescent19Sun
20Mon9:227.39:418.03:100.93:211.15:148:04Waning Crescent20Mon
21Tue10:117.310:238.23:590.74:041.25:138:05Waning Crescent21Tue
22Wed10:567.311:028.34:430.54:441.25:128:06Waning Crescent22Wed
23Thu11:387.311:408.45:230.35:211.25:118:07New Moon23Thu
24Fri12:187.46:010.25:581.25:118:08New Moon24Fri
25Sat12:168.412:577.46:370.26:341.25:108:09New Moon25Sat
26Sun12:538.41:347.37:130.27:111.25:098:10New Moon26Sun
27Mon1:298.52:117.37:500.17:501.25:098:11Waxing Crescent27Mon
28Tue2:068.42:507.38:280.18:311.25:088:12Waxing Crescent28Tue
29Wed2:478.43:317.49:090.19:161.25:078:13Waxing Crescent29Wed
30Thu3:318.34:177.69:530.210:061.15:078:14Waxing Crescent30Thu
31Fri4:218.25:057.810:400.211:011.05:068:14First Quarter31Fri
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 13% 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 (13% 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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