How's the tide at Boston today?
High water today at 8:29 am (8.8 ft) and 8:46 pm (10.8 ft). Low water at 2:18 am (0.3 ft) and 2:29 pm (1.0 ft).
Times are local to Boston (America/New_York). Heights are feet above MLLW.
Boston tide chart — next seven days
Today — Sunday, August 9
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 2:18 am | 0.3 ft | |
| High | 8:29 am | 8.8 ft | |
| Low | 2:29 pm | 1.0 ft | |
| High | 8:46 pm | 10.8 ft |
Monday, August 10
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 3:21 am | -0.1 ft | |
| High | 9:34 am | 9.1 ft | |
| Low | 3:31 pm | 0.8 ft | |
| High | 9:48 pm | 11.1 ft |
Tuesday, August 11
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 4:21 am | -0.4 ft | |
| High | 10:33 am | 9.5 ft | |
| Low | 4:31 pm | 0.4 ft | |
| High | 10:47 pm | 11.3 ft |
Wednesday, August 12
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 5:15 am | -0.7 ft | |
| High | 11:29 am | 9.9 ft | |
| Low | 5:27 pm | 0.0 ft | |
| High | 11:43 pm | 11.4 ft |
Thursday, August 13
| Tide | Time | Height | Relative height |
|---|---|---|---|
| Low | 6:07 am | -0.9 ft | |
| High | 12:21 pm | 10.3 ft | |
| Low | 6:21 pm | -0.2 ft |
Three turns fall on this date. The next one lands after midnight and is listed under the following day.
Friday, August 14
| Tide | Time | Height | Relative height |
|---|---|---|---|
| High | 12:36 am | 11.3 ft | |
| Low | 6:55 am | -0.8 ft | |
| High | 1:10 pm | 10.5 ft | |
| Low | 7:12 pm | -0.3 ft |
Saturday, August 15
| Tide | Time | Height | Relative height |
|---|---|---|---|
| High | 1:28 am | 11.1 ft | |
| Low | 7:42 am | -0.6 ft | |
| High | 1:58 pm | 10.5 ft | |
| Low | 8:03 pm | -0.2 ft |
Tide calendar
Every high and low water for August 2026 and September 2026.
Boston tide calendar — August 2026
| Day | High water | Low water |
|---|---|---|
| 1 Sat | 1:32 am (10.2), 2:02 pm (9.5) | 7:49 am (0.2), 8:03 pm (0.8) |
| 2 Sun | 2:11 am (10.1), 2:39 pm (9.7) | 8:27 am (0.2), 8:45 pm (0.7) |
| 3 Mon | 2:53 am (9.9), 3:18 pm (10.0) | 9:06 am (0.3), 9:31 pm (0.6) |
| 4 Tue | 3:37 am (9.7), 4:01 pm (10.1) | 9:49 am (0.5), 10:20 pm (0.6) |
| 5 Wed | 4:26 am (9.4), 4:48 pm (10.3) | 10:36 am (0.7), 11:15 pm (0.6) |
| 6 Thu | 5:20 am (9.1), 5:41 pm (10.4) | 11:28 am (0.9) |
| 7 Fri | 6:19 am (8.9), 6:39 pm (10.4) | 12:13 am (0.5), 12:25 pm (1.1) |
| 8 Sat | 7:23 am (8.7), 7:41 pm (10.6) | 1:14 am (0.4), 1:25 pm (1.1) |
| 9 Sun · today | 8:29 am (8.8), 8:46 pm (10.8) | 2:18 am (0.3), 2:29 pm (1.0) |
| 10 Mon | 9:34 am (9.1), 9:48 pm (11.1) | 3:21 am (-0.1), 3:31 pm (0.8) |
| 11 Tue | 10:33 am (9.5), 10:47 pm (11.3) | 4:21 am (-0.4), 4:31 pm (0.4) |
| 12 Wed | 11:29 am (9.9), 11:43 pm (11.4) | 5:15 am (-0.7), 5:27 pm (0.0) |
| 13 Thu | 12:21 pm (10.3) | 6:07 am (-0.9), 6:21 pm (-0.2) |
| 14 Fri | 12:36 am (11.3), 1:10 pm (10.5) | 6:55 am (-0.8), 7:12 pm (-0.3) |
| 15 Sat | 1:28 am (11.1), 1:58 pm (10.5) | 7:42 am (-0.6), 8:03 pm (-0.2) |
| 16 Sun | 2:18 am (10.6), 2:43 pm (10.4) | 8:28 am (-0.2), 8:52 pm (0.1) |
| 17 Mon | 3:06 am (10.1), 3:29 pm (10.2) | 9:13 am (0.4), 9:42 pm (0.4) |
| 18 Tue | 3:56 am (9.5), 4:15 pm (9.9) | 9:59 am (1.0), 10:34 pm (0.8) |
| 19 Wed | 4:48 am (8.9), 5:05 pm (9.6) | 10:48 am (1.5), 11:29 pm (1.2) |
| 20 Thu | 5:43 am (8.4), 5:58 pm (9.3) | 11:40 am (2.0) |
| 21 Fri | 6:40 am (8.0), 6:53 pm (9.1) | 12:26 am (1.5), 12:34 pm (2.3) |
| 22 Sat | 7:40 am (7.9), 7:50 pm (9.1) | 1:24 am (1.7), 1:29 pm (2.4) |
| 23 Sun | 8:38 am (7.9), 8:47 pm (9.2) | 2:23 am (1.7), 2:25 pm (2.3) |
| 24 Mon | 9:32 am (8.1), 9:38 pm (9.5) | 3:17 am (1.5), 3:19 pm (2.1) |
| 25 Tue | 10:18 am (8.5), 10:24 pm (9.8) | 4:05 am (1.2), 4:07 pm (1.8) |
| 26 Wed | 10:59 am (8.8), 11:05 pm (10.0) | 4:46 am (0.8), 4:51 pm (1.4) |
| 27 Thu | 11:37 am (9.2), 11:45 pm (10.2) | 5:24 am (0.5), 5:33 pm (1.0) |
| 28 Fri | 12:13 pm (9.6) | 6:01 am (0.3), 6:14 pm (0.6) |
| 29 Sat | 12:24 am (10.3), 12:49 pm (9.9) | 6:38 am (0.1), 6:55 pm (0.3) |
| 30 Sun | 1:04 am (10.3), 1:26 pm (10.2) | 7:16 am (0.1), 7:37 pm (0.1) |
| 31 Mon | 1:45 am (10.2), 2:05 pm (10.4) | 7:55 am (0.1), 8:20 pm (0.0) |
Times local to Boston, heights in feet above MLLW.
Boston tide calendar — September 2026
| Day | High water | Low water |
|---|---|---|
| 1 Tue | 2:28 am (10.0), 2:46 pm (10.6) | 8:36 am (0.2), 9:07 pm (0.0) |
| 2 Wed | 3:14 am (9.7), 3:31 pm (10.6) | 9:21 am (0.5), 9:57 pm (0.1) |
| 3 Thu | 4:05 am (9.3), 4:22 pm (10.5) | 10:11 am (0.8), 10:54 pm (0.3) |
| 4 Fri | 5:02 am (9.0), 5:20 pm (10.4) | 11:07 am (1.1), 11:55 pm (0.5) |
| 5 Sat | 6:05 am (8.7), 6:23 pm (10.3) | 12:08 pm (1.3) |
| 6 Sun | 7:12 am (8.7), 7:30 pm (10.3) | 12:59 am (0.5), 1:12 pm (1.3) |
| 7 Mon | 8:20 am (8.8), 8:37 pm (10.4) | 2:05 am (0.4), 2:18 pm (1.2) |
| 8 Tue | 9:25 am (9.3), 9:41 pm (10.7) | 3:08 am (0.2), 3:22 pm (0.8) |
| 9 Wed | 10:22 am (9.7), 10:38 pm (10.9) | 4:06 am (-0.1), 4:21 pm (0.3) |
| 10 Thu | 11:12 am (10.2), 11:31 pm (10.9) | 4:58 am (-0.4), 5:15 pm (0.0) |
| 11 Fri | 11:59 am (10.5) | 5:45 am (-0.4), 6:05 pm (-0.3) |
| 12 Sat | 12:20 am (10.8), 12:44 pm (10.6) | 6:30 am (-0.3), 6:53 pm (-0.4) |
| 13 Sun | 1:07 am (10.5), 1:26 pm (10.6) | 7:14 am (0.0), 7:39 pm (-0.2) |
| 14 Mon | 1:53 am (10.1), 2:08 pm (10.4) | 7:56 am (0.4), 8:24 pm (0.0) |
| 15 Tue | 2:38 am (9.6), 2:51 pm (10.2) | 8:39 am (0.9), 9:10 pm (0.4) |
| 16 Wed | 3:24 am (9.1), 3:35 pm (9.8) | 9:23 am (1.4), 9:58 pm (0.9) |
| 17 Thu | 4:13 am (8.6), 4:23 pm (9.4) | 10:10 am (1.9), 10:51 pm (1.3) |
| 18 Fri | 5:06 am (8.2), 5:16 pm (9.1) | 11:01 am (2.3), 11:46 pm (1.7) |
| 19 Sat | 6:03 am (7.9), 6:13 pm (8.9) | 11:56 am (2.5) |
| 20 Sun | 7:01 am (7.8), 7:11 pm (8.9) | 12:44 am (1.8), 12:53 pm (2.5) |
| 21 Mon | 7:59 am (8.0), 8:08 pm (9.1) | 1:40 am (1.8), 1:49 pm (2.4) |
| 22 Tue | 8:52 am (8.3), 9:01 pm (9.3) | 2:34 am (1.6), 2:44 pm (2.1) |
| 23 Wed | 9:39 am (8.7), 9:49 pm (9.6) | 3:23 am (1.3), 3:34 pm (1.6) |
| 24 Thu | 10:20 am (9.2), 10:32 pm (9.9) | 4:06 am (0.9), 4:20 pm (1.1) |
| 25 Fri | 10:57 am (9.7), 11:13 pm (10.2) | 4:45 am (0.5), 5:03 pm (0.5) |
| 26 Sat | 11:34 am (10.2), 11:54 pm (10.3) | 5:24 am (0.3), 5:45 pm (0.1) |
| 27 Sun | 12:12 pm (10.6) | 6:03 am (0.1), 6:27 pm (-0.3) |
| 28 Mon | 12:36 am (10.3), 12:51 pm (10.9) | 6:43 am (0.0), 7:11 pm (-0.6) |
| 29 Tue | 1:20 am (10.2), 1:34 pm (11.1) | 7:25 am (0.1), 7:57 pm (-0.6) |
| 30 Wed | 2:07 am (10.0), 2:19 pm (11.1) | 8:10 am (0.3), 8:46 pm (-0.5) |
Times local to Boston, heights in feet above MLLW.
Sun and moon
Today
Sunrise 5:45 am · Sunset 7:53 pm
Moon 13% lit, waning
Tomorrow
Sunrise 5:46 am · Sunset 7:52 pm
Moon 6% lit, waning
Nearby tide charts
Where these times come from
- Source
- NOAA Center for Operational Oceanographic Products and Services — station 8443970, Boston (reference station)
- Datum
- MLLW — heights in feet above mean lower low water
- Distance
- 3.1 km from the centre of Boston
- Retrieved
- Aug 9, 2026, 10:48 AM UTC
- Licence
- Public domain (US federal government data). NOS requests that attribution be given whenever NOS material is reproduced and re-disseminated.
Predictions are issued by NOAA. The official NOAA data are authoritative. Not for navigation. Check the official NOAA station page before you rely on these times on the water.