Boat or Nope

NOAA CO-OPS 8447180

Sandwich Marina tide chart

Tide predictions are for NOAA CO-OPS station Sandwich Marina (8447180), datum MLLW. Times are the station's local time.

Today

Mon, Oct 19

10.08.06.04.02.00.0HighLowHigh
Today's predicted tide, feet above MLLW. High and low marks are the CO-OPS turns.

This week

High and low tides

DayTurnTimeHeight
Mon, Oct 19High6:12 AM6.91 ft
Low12:13 PM2.29 ft
High6:25 PM7.72 ft
Tue, Oct 20Low12:52 AM1.50 ft
High7:06 AM7.08 ft
Low1:10 PM2.10 ft
High7:21 PM7.79 ft
Wed, Oct 21Low1:44 AM1.35 ft
High7:59 AM7.44 ft
Low2:04 PM1.72 ft
High8:15 PM8.00 ft
Thu, Oct 22Low2:33 AM1.09 ft
High8:47 AM7.95 ft
Low2:55 PM1.18 ft
High9:06 PM8.29 ft
Fri, Oct 23Low3:19 AM0.79 ft
High9:31 AM8.55 ft
Low3:44 PM0.56 ft
High9:54 PM8.62 ft
Sat, Oct 24Low4:03 AM0.49 ft
High10:14 AM9.17 ft
Low4:31 PM-0.06 ft
High10:41 PM8.91 ft
Sun, Oct 25Low4:48 AM0.24 ft
High10:57 AM9.74 ft
Low5:18 PM-0.62 ft
High11:28 PM9.14 ft

Source and freshness

Retrieved from NOAA CO-OPS. Predictions stay cached for up to 6 hours, the same window harbor pages use. The page refreshes about every 15 minutes. Retrieved Oct 19, 11:38 AM EDT.

CO-OPS station 8447180 · Prediction request

Use the tide with the forecast

Go / No-Go for Sandwich MarinaWind, waves, advisories, and this tide station.Forecast widgetPut the harbor call on a marina or club site.Water temperatureNDBC 44018 observations.Cape Cod Bay marine forecastCompare harbors around this water.

The same station is the tide reference for Bosun's Marine, Broad Cove, Butler Cove, Buttermilk Bay, Cape Cod Bay, Centerville River, Cowyard, Crab Cove.

Tide chart questions

Where do the Sandwich Marina tide times come from?

High and low times come from NOAA CO-OPS station Sandwich Marina (8447180). Heights are in feet relative to mean lower low water (MLLW), in the station's local time. This page requests the same predictions product as the Sandwich Marina harbor briefing.

How current is this tide chart?

These are astronomical predictions. The page shows when Boat or Nope retrieved them from CO-OPS. The response is cached for up to 6 hours, the same window the harbor pages use, and the page itself refreshes about every 15 minutes.

Does the Sandwich Marina tide chart include storm surge or observed water level?

The chart is the predicted tide. When CO-OPS reports a recent measured water level at this station, the Sandwich Marina Go/No-Go page compares it with the prediction. This tide page does not add a separate water-level request.

Why is there one tide chart for this station?

Harbors that share station 8447180 use one canonical chart so the same curve is not published as dozens of near-duplicate URLs. Bosun's Marine, Broad Cove, Butler Cove, Buttermilk Bay link here.