Salt Box Beach
Massachusetts · United States
Rating right now
Salt Box Beach is a NW-facing sand beach on the James Bay coastline near Massachusetts — it picks up W–N swell and turns cleanest in a E–S wind, with the most consistent surf 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: ~19.2°C (66.6°F) on average
Jan
5°C
41°F · 2.8–7.1°C
Feb
3.3°C
37.9°F · 2.2–5°C
Mar
3.9°C
39°F · 1–6.5°C
Apr
6.6°C
43.9°F · 3.7–10.8°C
May
10.6°C
51.1°F · 7.9–15.5°C
Jun
15.4°C
59.7°F · 9.7–18.3°C
Jul
19.6°C
67.3°F · 16.3–23.1°C
Aug
20.9°C
69.6°F · 17.7–23.6°C
Sep
19.2°C
66.6°F · 15.9–22.1°C
Oct
15.1°C
59.2°F · 11.5–18.5°C
Nov
10.8°C
51.4°F · 8.4–14.8°C
Dec
7.5°C
45.5°F · 4.9–9.8°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
W–N
Best wind
E–S
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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