Boston tide chart for today and solunar table

What are the tides like in Boston?

The station is on the Boston waterfront, inside the harbor. It is the reference for the inner harbor, the Harbor Islands and much of Massachusetts Bay, where the tide runs close to 3 m (10 ft) at spring tides.

Based on the station's constants, Boston has a semidiurnal tide: the form number (K1+O1)/(M2+S2) is 0.16. The reference spring range — around new and full moon — is about 10.4 ft, and mean sea level sits 5.2 ft above MLLW. The two daily highs are close in height, about 12 hours and 25 minutes apart.

What is the best time to fish in Boston?

Solunar theory points to the major periods (about 2 hours centered on the moon passing overhead or underfoot) and the minor periods (1 hour around moonrise and moonset). What surf, pier and inshore anglers repeat most often is simpler: moving water (the middle of the incoming or outgoing tide), low light (dawn and dusk) and a moon near new or full, when the tidal range is biggest.

The fishing score from 0 to 4 combines those three signals. It is a traditional rule of thumb, not a catch forecast: it knows nothing about wind, rain, water clarity or the species you are after. In November 2026, the top-scoring days at Boston are November 24, November 25, and November 27.

Where does this data come from?

The prediction adds up 34 harmonic constituents for NOAA station 8443970 — Boston, published by NOAA CO-OPS (Vector Average of 5 years (2015-2019). Sa and SSa from 20 year Analysis (2000-2019)). Phases are referenced to Greenwich (GMT) and converted to local time for each date, including daylight saving time. Heights are relative to MLLW from the station's 1983-2001 tidal datum epoch. Node factors follow Schureman; sun and moon positions use Meeus's formulas.

Wind, pressure and storms change the real water level, sometimes by a foot or more. Times shift much less than heights.