Boston Tide Times & Tide Chart
High and low tide predictions for Boston, New England (NOAA station 8443970). Heights are in feet relative to Mean Lower Low Water (MLLW) — negative values are minus tides, the best for tidepooling.
Plan a visit — find your tide window →Upcoming tides
Sunday, September 27
| 6:03 AM | Low tide | 0.08 ft |
| 12:12 PM | High tide | 10.62 ft |
| 6:27 PM | Low tide | -0.33 ft |
Monday, September 28
| 12:36 AM | High tide | 10.34 ft |
| 6:43 AM | Low tide | 0.01 ft |
| 12:51 PM | High tide | 10.92 ft |
| 7:11 PM | Low tide | -0.56 ft |
Tuesday, September 29
| 1:20 AM | High tide | 10.23 ft |
| 7:25 AM | Low tide | 0.07 ft |
| 1:34 PM | High tide | 11.10 ft |
| 7:57 PM | Low tide | -0.62 ft |
Wednesday, September 30
| 2:07 AM | High tide | 10.01 ft |
| 8:10 AM | Low tide | 0.26 ft |
| 2:19 PM | High tide | 11.11 ft |
| 8:46 PM | Low tide | -0.49 ft |
Thursday, October 1
| 2:56 AM | High tide | 9.69 ft |
| 8:58 AM | Low tide | 0.55 ft |
| 3:08 PM | High tide | 10.95 ft |
| 9:39 PM | Low tide | -0.21 ft |
Astronomical predictions from NOAA CO-OPS; actual levels vary with weather and swell.
Tidepooling near Boston
- Canoe Beach, Nahant — Rocky headlands north of the city used as Northeastern's marine lab teaching shore.
- Castle Rock, Marblehead — Granite ledges with pools tucked in the clefts; free neighborhood access.
- Halibut Point State Park, Rockport — An old granite quarry meets tidal ledges — the North Shore's best-known pools.
What to look for
green crabs, periwinkles and dog whelks, Forbes' sea stars, blue mussels, rock gunnels, hermit crabs.
Best time of year
Two low tides a day year-round; the biggest lows come with the new and full moon. June through September brings warm rocks, clear water, and the most life in the pools.
Conditions and access change — check the park's official page and local hazard advisories before you go, and confirm the tide on the day. New to tidepools? Read how to go tidepooling safely.