Sandy Marsh
Massachusetts · United States
Rating right now
Sandy Marsh is a NE-facing sand beach on the United States shoreline, opening onto the James Bay — it catches NW–E swell, and offshore S–SW winds tidy the banks through april–october.
10-day forecast
Local time · updates hourly
Wave height & period
Wind
| Time | Rating | Waves | Swell | Wind | Air |
|---|---|---|---|---|---|
Water temperature by month
This month: ~17.8°C (64°F) on average
Jan
5.5°C
41.9°F · 2.8–8.1°C
Feb
3.7°C
38.7°F · 2.5–5.1°C
Mar
3.8°C
38.8°F · 1.4–6°C
Apr
6.2°C
43.2°F · 3.8–9.1°C
May
10.4°C
50.7°F · 7.4–14.8°C
Jun
15.1°C
59.2°F · 11.1–18.1°C
Jul
18.6°C
65.5°F · 16.3–22.3°C
Aug
19.3°C
66.7°F · 16.8–21.4°C
Sep
17.8°C
64°F · 15.3–20.8°C
Oct
14.2°C
57.6°F · 10.7–17.1°C
Nov
10.8°C
51.4°F · 8.6–14.2°C
Dec
8°C
46.4°F · 5.8–10.3°C
25-year monthly averages from the NOAA OISST satellite record — typical range min–max, not a live reading.
Know before you go
Best swell
NW–E
Best wind
S–SW
Break type
Beach break
Best season
April–October
Safety: Friendly by surf standards, but rip currents and drop-in etiquette still apply. Shifting sandbars create moving rip currents — learn to spot them and use them to get out back.
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