Tides Today & Tomorrow in Southold, NY

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Southold, NY.
Next low tide (tomorrow) : 1:45 am (0.7 ft)
Next high tide : in 6h 15m at 7:10 pm (2.5 ft)
Sunset today : 7:39 pm
Sunrise tomorrow : 6:05 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8512114
Common Questions About Tides

Southold, NY Tides - Mar 1936

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:272.35:491.811:560.06:235:40First Quarter1Sun
2Mon6:382.26:551.812:080.112:570.06:225:41Waxing Gibbous2Mon
3Tue7:382.27:501.91:120.11:530.06:205:42Waxing Gibbous3Tue
4Wed8:282.28:382.02:090.12:440.06:195:43Waxing Gibbous4Wed
5Thu9:112.29:212.13:020.03:290.06:175:45Waxing Gibbous5Thu
6Fri9:512.210:022.23:480.04:090.06:155:46Full Moon6Fri
7Sat10:292.210:422.34:290.04:450.06:145:47Full Moon7Sat
8Sun11:072.211:222.45:060.05:190.06:125:48Full Moon8Sun
9Mon11:462.15:430.05:510.16:115:49Full Moon9Mon
10Tue12:012.412:262.16:200.06:260.26:095:50Waning Gibbous10Tue
11Wed12:422.41:092.07:000.07:030.36:075:51Waning Gibbous11Wed
12Thu1:242.31:541.97:450.17:440.46:065:52Waning Gibbous12Thu
13Fri2:082.22:401.88:330.28:310.56:045:53Waning Gibbous13Fri
14Sat2:542.23:281.79:240.29:230.56:025:55Third Quarter14Sat
15Sun3:442.14:201.710:170.310:180.56:015:56Third Quarter15Sun
16Mon4:432.15:211.711:130.311:170.55:595:57Third Quarter16Mon
17Tue5:482.26:211.812:090.25:575:58Third Quarter17Tue
18Wed6:472.37:132.012:170.31:020.15:565:59Waning Crescent18Wed
19Thu7:372.48:002.21:140.21:530.05:546:00Waning Crescent19Thu
20Fri8:242.58:452.42:100.02:42-0.15:526:01Waning Crescent20Fri
21Sat9:102.69:322.73:05-0.33:29-0.35:516:02New Moon21Sat
22Sun9:572.610:192.93:58-0.54:15-0.45:496:03New Moon22Sun
23Mon10:452.611:073.04:49-0.65:01-0.45:476:04New Moon23Mon
24Tue11:342.511:573.15:40-0.65:48-0.35:466:05New Moon24Tue
25Wed12:252.46:33-0.66:38-0.25:446:06Waxing Crescent25Wed
26Thu12:513.01:192.37:29-0.47:33-0.15:426:08Waxing Crescent26Thu
27Fri1:492.82:172.28:27-0.38:340.15:416:09Waxing Crescent27Fri
28Sat2:492.63:172.19:27-0.19:380.25:396:10First Quarter28Sat
29Sun3:532.54:192.010:280.110:440.35:376:11First Quarter29Sun
30Mon5:022.35:272.011:300.211:510.35:366:12First Quarter30Mon
31Tue6:132.26:332.012:290.25:346:13First Quarter31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8512114)

Common Questions About Southold, NY Tides

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What time does the tide turn (slack tide) in Southold, NY today?

Slack tide in Southold, NY is approximately 10:27 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 Southold, NY?

Southold, NY is currently in a transitional phase. Tonight's moon is 65% 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 shifting between spring and neap.

What datum are Southold, NY 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 Southold, NY?

Tide predictions for Southold, NY 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 Southold, NY?

Tide data for Southold, NY is sourced from NOAA Station #8512114. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8512114.

What is the moon phase in Southold, NY tonight?

Tonight the moon over Southold, NY is First Quarter (65% illuminated). This places Southold, NY in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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