Boston tide times

Boston, MABostonNOAA 8443970Wednesday, September 30 · EDTWed Sep 30Live gauge · 11 min agoLiveChange station
Print month

Pick a dateMonth calendar

Today at Boston the next low tide is at 8:46 PM (−0.5 ft) and the next high tide is at 2:19 PM (11.1 ft). Tomorrow's first low is at 8:58 AM. Right now the gauge reads 0.5 ft above prediction, so plan for a higher tide than the table shows. Spring tides peak today, so expect bigger highs and lower lows.

Right now
7.7 ft ↑
Rising 2.3 ft per hour
Next high
2:19 PM
In 2 h 26 min · 11.1 ft
Next low
8:46 PM
In 8 h 53 min · −0.5 ft
Gauge vs forecast
+0.5 ft
Water running above prediction
Gauge reads 0.5 ft above forecast

Today's tide

PredictedMeasuredNightHeight above MLLW
−2 ft0 ft2 ft4 ft6 ft8 ft10 ft12 ftNOW 11:532:07 AMHigh · 10.0 ft8:10 AMLow · 0.3 ft2:19 PMHigh · 11.1 ft8:46 PMLow · −0.5 ft
Tide chart for Boston, today. High 10.0 ft at 2:07 AM, low 0.3 ft at 8:10 AM, high 11.1 ft at 2:19 PM, low −0.5 ft at 8:46 PM. Measured water level is 0.5 ft above the prediction.

Blue shows the NOAA prediction and amber shows the measured water level so far today. Heights are in feet above Mean Lower Low Water (MLLW).

Today's tides

ft above MLLW
  • High2:07 AM10.0 ft
  • Low8:10 AM0.3 ft
  • High2:19 PM11.1 ft
  • Low8:46 PM−0.5 ft
Tide times for Boston
TideTimeHeight
High2:07 AM10.0 ft
Low8:10 AM0.3 ft
High2:19 PM11.1 ft
Low8:46 PM−0.5 ft
Sunrise
6:41 AM
First light 6:13
Sunset
6:29 PM
Last light 6:57
Moon
82%
Waning gibbous
Tide range
11.6 ft
Spring tides Wed

Best windows today

Plan the week →
  • Fishing
    5:00 to 8:00 PM

    Today's best window (6:00 to 8:00 AM) has passed. Dawn light with the outgoing tide around the 8:10 AM low.

  • Tidepools & shelling
    Next: Thu 7:00 to 11:00 AM
    Earlier today: 7:00 to 9:00 AM

    Today's best window (7:00 to 9:00 AM) has passed.

  • Surfing
    10:00 AM to 12:00 PM

    Mid tide from 10:00 AM to 12:00 PM. No wind sensor at this station.

  • Shallow boat launch
    Avoid 7:00 to 9:00 AM

    Under 1.5 ft around low water. Launch before 7:00 AM.

Plan the week

Moving water around the turn often fishes best. Local species and bait matter more than any chart.

Next 7 days

September calendar →
High and low tides for the next 7 days, heights in ft
DayTide 1Tide 2Tide 3Tide 4Range, ft
TodayWed 30H2:07a10.0L8:10a0.3H2:19p11.1L8:46p−0.511.6 spring tide
ThuOct 1H2:56a9.7L8:58a0.5H3:08p11.0L9:39p−0.211.2
FriOct 2H3:50a9.3L9:52a0.9H4:04p10.7L10:38p0.110.5
SatOct 3H4:51a9.0L10:52a1.2H5:06p10.3L11:41p0.49.9
SunOct 4H5:57a8.8L11:57a1.4H6:13p10.18.7
MonOct 5L12:46a0.5H7:05a8.9L1:03p1.4H7:22p10.09.5
TueOct 6L1:51a0.5H8:11a9.2L2:10p1.1H8:30p10.19.6

Spring tides Wednesday. Lows drop to −0.5 ft, the best shelling days this week. Spring and neap tides

Tide predictions and observations: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), station 8443970.

Nearby stations

Currents

South Boston, Pier 4, 0.2 n.mi. NNE of

  • Slack1:52 AM
  • Max ebb6:18 AM 0.4 kn
  • Slack8:47 AM
  • Max flood11:42 AM 0.3 kn
  • Slack2:05 PM
  • Max ebb6:55 PM 0.4 kn
  • Slack9:29 PM

Current predictions for South Boston, Pier 4, 0.2 n.mi. NNE of, 1 mi away. Currents near inlets can be strong. Not for navigation.

Station details

Datum
Mean lower low water
Predictions
NOAA, from this station's own tide records
Live gauge
Every 6 minutes
Coordinates
42.354° N, 71.050° W
Time zone
Eastern, UTC−4
Station ID
NOAA 8443970

About the tides at Boston

Expect two roughly equal high tides a day at Boston, each arriving about 50 minutes later than the day before. With a mean range of about 9.5 ft, the shoreline here changes a lot between high and low water. From the average lower low to the average higher high, the difference is 10.3 ft. Over the next two weeks the biggest daily range, 11.6 ft, comes today, and the smallest, 8.7 ft, on Sunday.

A live NOAA gauge measures the water here, and predictions are calculated from this station's own records. It also reports air pressure. It was established in 1921. The nearest other station is Charlestown, 1 mi away. For tidal currents, see South Boston, Pier 4, 0.2 n.mi. NNE of.

Height unitsftmAdd this tide widget to your site. It's free.Week plannerPrintable September calendar

Tide predictions and water levels from NOAA CO-OPS. For planning only, not for navigation. Real water levels can differ because of wind, air pressure and river flow. Always check conditions on site.