Tide chart · Massachusetts

South Boston tide chart

Wednesday, October 14, 2026 · local time 4:33 PM

Right now
Falling
7.5 ft · low in 4 h 08
Next high tide 2:55 AM8.8 ft · tomorrow
Next low tide 8:41 PM0.5 ft
Tidal range today 9.5ftbetween high and low water

Harmonic constants published by NOAANot for navigation

South Boston tide chart today

2 ft 4 ft 6 ft 8 ft 10 ft 12 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM12 AM 2:12 AM 9.2 ft 8:06 AM 1.4 ft 2:16 PM 10.0 ft 8:41 PM 0.5 ft 4:33 PM
High tideLow tideNow

Wednesday, October 14

High tide2:12 AM
9.2 ft
Low tide8:06 AM
1.4 ft
High tide2:16 PM
10.0 ft
Low tide8:41 PM
0.5 ft

South Boston tide chart: next 7 days

TodayOct 14
  • High2:12 AM9.2 ft
  • Low8:06 AM1.4 ft
  • High2:16 PM10.0 ft
  • Low8:41 PM0.5 ft
ThursdayOct 15
  • High2:55 AM8.8 ft
  • Low8:48 AM1.7 ft
  • High2:58 PM9.7 ft
  • Low9:26 PM0.9 ft
FridayOct 16
  • High3:40 AM8.4 ft
  • Low9:33 AM2.1 ft
  • High3:45 PM9.4 ft
  • Low10:14 PM1.3 ft
SaturdayOct 17
  • High4:30 AM8.2 ft
  • Low10:23 AM2.3 ft
  • High4:36 PM9.2 ft
  • Low11:07 PM1.5 ft
SundayOct 18
  • High5:24 AM8.1 ft
  • Low11:18 AM2.4 ft
  • High5:32 PM9.0 ft
MondayOct 19
  • Low12:01 AM1.6 ft
  • High6:20 AM8.1 ft
  • Low12:15 PM2.4 ft
  • High6:29 PM8.9 ft
TuesdayOct 20
  • Low12:55 AM1.6 ft
  • High7:15 AM8.3 ft
  • Low1:11 PM2.2 ft
  • High7:26 PM9.0 ft

This year in South Boston

Highest tide11.9ftNovember 26, 2026, 11:50 AM
Lowest tide-1.7ftJanuary 23, 2027, 5:50 PM
Spring tide range12.2ftneap tides: 8.0 ft
King tidesNov 26, 2026 · Dec 25, 2026 · Jun 7, 2027 · Jul 6, 2027 · Aug 4, 2027

Same tides nearby

These places use the same tide station as South Boston: Back Bay, Boston, Dorchester, Fenway/Kenmore, Hyde Park, Ashmont, Roxbury Crossing, Cambridgeport, East Cambridge, North End, Kendall Square, Beacon Hill.

NOAA

Calculated by Marinalo from the Boston tide station, 2.3 km from South Boston: harmonic constants published by NOAA CO-OPS (public domain). Heights above Mean Lower Low Water (MLLW), the US chart datum. Times in local time (America/New_York), daylight saving included. Place names: GeoNames, CC BY 4.0. Astronomical tides only: wind and air pressure can change the water level. Not for navigation: check NOAA Tides & Currents before going out. How we calculate tides.