Tides Today & Tomorrow in Guilford, CT

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Guilford, CT.
Next low tide : 10:26 pm (0.8 ft)
Next high tide : in 5h 39m at 4:06 pm (5.6 ft)
Sunset today : 7:45 pm
Sunrise tomorrow : 6:03 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8464445
Common Questions About Tides

Guilford, CT Tides - Nov 1930

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:145.07:354.912:511.01:181.06:214:47Waxing Gibbous1Sat
2Sun7:595.28:215.01:360.92:060.76:224:45Waxing Gibbous2Sun
3Mon8:405.59:035.12:180.72:490.56:234:44Waxing Gibbous3Mon
4Tue9:175.69:425.22:570.63:300.26:254:43Full Moon4Tue
5Wed9:535.810:215.23:350.54:100.06:264:42Full Moon5Wed
6Thu10:295.911:015.24:120.54:49-0.16:274:41Full Moon6Thu
7Fri11:075.911:425.24:510.55:29-0.16:284:40Full Moon7Fri
8Sat11:475.95:310.66:120.06:294:39Waning Gibbous8Sat
9Sun12:255.112:335.86:150.66:590.16:314:38Waning Gibbous9Sun
10Mon1:135.01:235.77:030.77:510.36:324:36Waning Gibbous10Mon
11Tue2:064.92:195.57:590.98:480.46:334:35Waning Gibbous11Tue
12Wed3:044.93:215.49:020.99:500.56:344:34Third Quarter12Wed
13Thu4:064.94:275.210:100.910:530.46:354:34Third Quarter13Thu
14Fri5:115.15:345.211:190.711:540.36:374:33Third Quarter14Fri
15Sat6:145.36:395.212:250.56:384:32Waning Crescent15Sat
16Sun7:135.67:395.312:510.21:260.16:394:31Waning Crescent16Sun
17Mon8:075.98:345.41:450.02:22-0.26:404:30Waning Crescent17Mon
18Tue8:566.29:255.42:35-0.13:14-0.56:414:29New Moon18Tue
19Wed9:436.310:135.43:23-0.14:03-0.66:434:29New Moon19Wed
20Thu10:286.211:005.34:090.04:49-0.56:444:28New Moon20Thu
21Fri11:126.111:465.24:550.15:34-0.46:454:27New Moon21Fri
22Sat11:575.85:390.46:18-0.16:464:26Waxing Crescent22Sat
23Sun12:325.012:425.66:250.67:030.16:474:26Waxing Crescent23Sun
24Mon1:194.91:305.37:120.87:500.46:484:25Waxing Crescent24Mon
25Tue2:074.72:195.18:011.18:380.76:504:25Waxing Crescent25Tue
26Wed2:574.63:114.88:541.29:280.86:514:24First Quarter26Wed
27Thu3:494.64:054.79:501.310:190.96:524:24First Quarter27Thu
28Fri4:424.65:004.610:471.211:100.96:534:23First Quarter28Fri
29Sat5:344.75:564.511:431.111:590.96:544:23First Quarter29Sat
30Sun6:254.96:494.612:360.96:554:23Waxing Gibbous30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8464445)

Common Questions About Guilford, CT Tides

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What time does the tide turn (slack tide) in Guilford, CT today?

Slack tide in Guilford, CT is approximately 7:16 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 Guilford, CT?

Guilford, CT is currently in a transitional phase. Tonight's moon is 36% 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 Guilford, CT 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 Guilford, CT?

Tide predictions for Guilford, CT 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 Guilford, CT?

Tide data for Guilford, CT is sourced from NOAA Station #8464445. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8464445.

What is the moon phase in Guilford, CT tonight?

Tonight the moon over Guilford, CT is First Quarter (36% illuminated). This places Guilford, CT 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