Tides Today & Tomorrow in Portsmouth, NH

TIDE TIMES for Sunday, June 14, 2026
The tide is currently falling in Portsmouth, NH.
Next low tide : in 3h 09m at 4:55 am (-0.9 ft)
Next high tide : 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 - Jun 2013

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:108.46:508.512:200.05:068:15Third Quarter1Sat
2Sun7:148.07:498.512:570.51:200.35:058:16Waning Crescent2Sun
3Mon8:187.88:458.52:020.52:200.55:058:17Waning Crescent3Mon
4Tue9:177.79:378.63:030.43:150.75:048:18Waning Crescent4Tue
5Wed10:117.610:248.63:570.24:040.85:048:18Waning Crescent5Wed
6Thu10:597.611:088.64:450.14:490.95:048:19New Moon6Thu
7Fri11:447.611:488.65:290.05:300.95:038:20New Moon7Fri
8Sat12:267.66:100.06:091.05:038:20New Moon8Sat
9Sun12:278.61:057.66:480.06:471.05:038:21New Moon9Sun
10Mon1:058.51:437.67:240.17:241.15:038:21New Moon10Mon
11Tue1:418.42:207.57:590.28:011.25:038:22Waxing Crescent11Tue
12Wed2:188.32:577.58:340.28:401.25:028:22Waxing Crescent12Wed
13Thu2:568.23:367.59:120.39:221.25:028:23Waxing Crescent13Thu
14Fri3:368.04:177.69:510.410:081.25:028:23Waxing Crescent14Fri
15Sat4:217.85:007.710:340.510:561.25:028:24First Quarter15Sat
16Sun5:097.75:457.911:190.511:481.05:028:24First Quarter16Sun
17Mon6:017.66:338.112:070.65:038:25First Quarter17Mon
18Tue6:577.67:268.512:430.812:590.65:038:25Waxing Gibbous18Tue
19Wed7:577.68:218.81:420.51:550.55:038:25Waxing Gibbous19Wed
20Thu8:587.89:179.32:420.02:520.35:038:25Waxing Gibbous20Thu
21Fri9:578.110:129.73:40-0.43:490.05:038:26Waxing Gibbous21Fri
22Sat10:548.411:0710.04:35-0.94:44-0.25:038:26Full Moon22Sat
23Sun11:508.65:30-1.35:40-0.45:048:26Full Moon23Sun
24Mon12:0210.212:468.96:24-1.56:36-0.55:048:26Full Moon24Mon
25Tue12:5810.21:419.07:18-1.67:32-0.55:048:26Waning Gibbous25Tue
26Wed1:5310.12:359.08:11-1.48:28-0.45:058:26Waning Gibbous26Wed
27Thu2:489.73:309.09:05-1.29:26-0.25:058:26Waning Gibbous27Thu
28Fri3:469.34:278.89:59-0.810:270.05:068:26Third Quarter28Fri
29Sat4:458.85:248.710:55-0.311:290.35:068:26Third Quarter29Sat
30Sun5:468.26:208.611:510.15:078:26Third Quarter30Sun
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 8:04 am — 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