New England
South Yarmouth
Bass River · Massachusetts · NOAA station 8447504 · Tide predictions
41.6650, -70.1833
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48-hour outlook
Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.
Drawn from the high/low predictions — NOAA publishes high/low only for this station.
The next seven days
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H = high tide · L = low tide · highs & lows in local time
On the water nearby
Nantucket Sound buoy · 13 mi SW · Station 44020
Wind & wave reports →
Nearby tide stations
- Dennisport · 3.6 mi E
- Wychmere Harbor · 6.1 mi E
- Sesuit Harbor, East Dennis · 6.2 mi N
- Hyannis Port · 6.4 mi W
- Saquatucket Harbor · 6.5 mi E
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 3.4 ft — Tue Jul 6 · 2:53 AM
Lowest predicted low tide: -0.5 ft — Sat Jan 23 · 7:35 PM
Biggest single-day swing: 3.9 ft on Sat Jan 23
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Fri Jan 22 | 6:44 PM | -0.5 ft |
| Sat Feb 20 | 6:25 PM | -0.4 ft |
| Wed Aug 4 | 8:57 AM | -0.4 ft |
| Tue Jul 6 | 9:18 AM | -0.4 ft |
| Tue Aug 3 | 8:06 AM | -0.4 ft |
| Thu Jan 21 | 5:51 PM | -0.4 ft |
| Mon Feb 22 | 7:33 AM | -0.4 ft |
| Mon Jul 5 | 8:26 AM | -0.4 ft |
| Tue Feb 23 | 8:23 AM | -0.4 ft |
| Wed Jul 7 | 10:10 AM | -0.3 ft |
171 minus tides (below 0 ft) are predicted here in 2027. The table shows up to the 10 lowest that fall between 7 AM and 7 PM — the ones worth planning a clam dig or tidepool walk around.
About this station
NOAA builds the predictions for South Yarmouth, Bass River from the BOSTON station: high tides about 0.29× the height, 108 min later; low tides about 0.29× the height, 106 min later.
Rocky shores and the country's biggest northern ranges: Eastport flirts with 20 ft, and the Gulf of Maine funnels weather as much as tide. Harbors here float — or sit in the mud — on the moon's schedule.