New Hampshire tide station
Portsmouth tide times
Today, Sunday, October 18, 2026: high tide at 5:39 AM (6.6 ft) and 5:44 PM (7.3 ft); low tide at 11:21 AM (2.0 ft). Water temperature 54.7 F at buoy SEIM1 (0.5 mi away).
High tide▲
5:39AM
6.6FT MLLW
high
Low tide▼
11:21AM
2.0FT MLLW
low
High tide▲
5:44PM
7.3FT MLLW
high
Water temp°F
54.7
12.6C
buoy SEIM1, 0.5 mi
predicted height above MLLWnightnow (build time; your browser updates it)
As of 5:20 AM the tide is rising toward high tide at 5:39 AM (6.6 ft).
First Quarter 51% litSunrise 7:01 AMSunset 5:56 PMDaylight 10h 55mEDT
- High tide at Portsmouth, New Hampshire on is at 5:39 AM (6.6 ft above MLLW) and 5:44 PM (7.3 ft above MLLW).
- Low tide at Portsmouth on is at 11:21 AM (2.0 ft).
- Today's tidal range at Portsmouth is 5.3 ft (highest high 7.3 ft, lowest low 2.0 ft).
- The nearest NOAA water temperature to Portsmouth is 54.7 F at buoy SEIM1 (0.5 mi away), as of .
- Sunrise 7:01 AM, sunset 5:56 PM (EDT); moon first quarter, 51% illuminated.
- Predictions are NOAA CO-OPS tide predictions for station 8423745 (subordinate station), heights above MLLW.
Next 7 days at Portsmouth
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Sun Oct 18today | 5:39 AM6.6 ft | 11:21 AM2.0 ft | 5:44 PM7.3 ft | 7:01 AM | 5:56 PM | 51% | |
| Mon Oct 19 | 12:09 AM1.3 ft | 6:35 AM6.6 ft | 12:18 PM2.0 ft | 6:42 PM7.3 ft | 7:02 AM | 5:54 PM | 61% |
| Tue Oct 20 | 1:04 AM1.3 ft | 7:31 AM6.7 ft | 1:18 PM1.9 ft | 7:39 PM7.4 ft | 7:03 AM | 5:53 PM | 71% |
| Wed Oct 21 | 1:57 AM1.2 ft | 8:22 AM7.0 ft | 2:14 PM1.5 ft | 8:34 PM7.6 ft | 7:04 AM | 5:51 PM | 80% |
| Thu Oct 22 | 2:45 AM0.9 ft | 9:08 AM7.5 ft | 3:06 PM1.1 ft | 9:23 PM7.8 ft | 7:05 AM | 5:49 PM | 88% |
| Fri Oct 23 | 3:28 AM0.6 ft | 9:49 AM8.0 ft | 3:52 PM0.5 ft | 10:09 PM8.1 ft | 7:07 AM | 5:48 PM | 94% |
| Sat Oct 24 | 4:08 AM0.4 ft | 10:28 AM8.5 ft | 4:35 PM-0.0 ft | 10:52 PM8.3 ft | 7:08 AM | 5:46 PM | 98% |
Water temperature near Portsmouth
54.7 F (12.6 C)
NDBC buoy SEIM1 (8419870 - Seavey Island, ME), 0.5 mi away, observed 08:48 UTC October 18, 2026
Water temperature is the nearest NOAA reading to Portsmouth, not a measurement at the tide gauge itself (this station has no water-temperature sensor). See water temperature by state for every sensor and buoy.
Tide tables
October 2026 tide table
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Thu Oct 1 | 6:41 AM | 6:25 PM | 72% | ||||
| Fri Oct 2 | 6:42 AM | 6:23 PM | 62% | ||||
| Sat Oct 3 | 6:43 AM | 6:21 PM | 52% | ||||
| Sun Oct 4 | 6:44 AM | 6:19 PM | 41% | ||||
| Mon Oct 5 | 6:45 AM | 6:18 PM | 31% | ||||
| Tue Oct 6 | 6:46 AM | 6:16 PM | 22% | ||||
| Wed Oct 7 | 6:48 AM | 6:14 PM | 14% | ||||
| Thu Oct 8 | 6:49 AM | 6:12 PM | 7% | ||||
| Fri Oct 9 | 6:50 AM | 6:11 PM | 3% | ||||
| Sat Oct 10 | 6:51 AM | 6:09 PM | 0% | ||||
| Sun Oct 11 | 6:52 AM | 6:07 PM | 0% | ||||
| Mon Oct 12 | 6:53 AM | 6:06 PM | 2% | ||||
| Tue Oct 13 | 6:55 AM | 6:04 PM | 7% | ||||
| Wed Oct 14 | 6:56 AM | 6:02 PM | 13% | ||||
| Thu Oct 15 | 6:57 AM | 6:01 PM | 21% | ||||
| Fri Oct 16 | 3:53 AM7.0 ft | 9:36 AM1.6 ft | 3:54 PM7.7 ft | 10:20 PM1.0 ft | 6:58 AM | 5:59 PM | 30% |
| Sat Oct 17 | 4:44 AM6.7 ft | 10:26 AM1.9 ft | 4:47 PM7.5 ft | 11:13 PM1.2 ft | 6:59 AM | 5:57 PM | 40% |
| Sun Oct 18today | 5:39 AM6.6 ft | 11:21 AM2.0 ft | 5:44 PM7.3 ft | 7:01 AM | 5:56 PM | 51% | |
| Mon Oct 19 | 12:09 AM1.3 ft | 6:35 AM6.6 ft | 12:18 PM2.0 ft | 6:42 PM7.3 ft | 7:02 AM | 5:54 PM | 61% |
| Tue Oct 20 | 1:04 AM1.3 ft | 7:31 AM6.7 ft | 1:18 PM1.9 ft | 7:39 PM7.4 ft | 7:03 AM | 5:53 PM | 71% |
| Wed Oct 21 | 1:57 AM1.2 ft | 8:22 AM7.0 ft | 2:14 PM1.5 ft | 8:34 PM7.6 ft | 7:04 AM | 5:51 PM | 80% |
| Thu Oct 22 | 2:45 AM0.9 ft | 9:08 AM7.5 ft | 3:06 PM1.1 ft | 9:23 PM7.8 ft | 7:05 AM | 5:49 PM | 88% |
| Fri Oct 23 | 3:28 AM0.6 ft | 9:49 AM8.0 ft | 3:52 PM0.5 ft | 10:09 PM8.1 ft | 7:07 AM | 5:48 PM | 94% |
| Sat Oct 24 | 4:08 AM0.4 ft | 10:28 AM8.5 ft | 4:35 PM-0.0 ft | 10:52 PM8.3 ft | 7:08 AM | 5:46 PM | 98% |
| Sun Oct 25 | 4:48 AM0.1 ft | 11:07 AM9.0 ft | 5:19 PM-0.5 ft | 11:37 PM8.5 ft | 7:09 AM | 5:45 PM | 100% |
| Mon Oct 26 | 5:30 AM-0.0 ft | 11:47 AM9.3 ft | 6:03 PM-0.9 ft | 7:10 AM | 5:43 PM | 99% | |
| Tue Oct 27 | 12:22 AM8.5 ft | 6:13 AM-0.1 ft | 12:30 PM9.6 ft | 6:49 PM-1.0 ft | 7:12 AM | 5:42 PM | 97% |
| Wed Oct 28 | 1:09 AM8.5 ft | 6:59 AM-0.1 ft | 1:17 PM9.6 ft | 7:38 PM-1.0 ft | 7:13 AM | 5:41 PM | 92% |
| Thu Oct 29 | 1:58 AM8.3 ft | 7:48 AM0.1 ft | 2:06 PM9.5 ft | 8:30 PM-0.9 ft | 7:14 AM | 5:39 PM | 85% |
| Fri Oct 30 | 2:51 AM8.1 ft | 8:40 AM0.3 ft | 3:00 PM9.3 ft | 9:26 PM-0.6 ft | 7:15 AM | 5:38 PM | 77% |
| Sat Oct 31 | 3:49 AM7.8 ft | 9:38 AM0.6 ft | 4:01 PM8.9 ft | 10:28 PM-0.2 ft | 7:17 AM | 5:36 PM | 68% |
November 2026 tide table
| Date | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Sunrise | Sunset | Moon |
|---|---|---|---|---|---|---|---|
| Sun Nov 1 | 3:54 AM7.6 ft | 9:43 AM0.8 ft | 4:08 PM8.6 ft | 10:34 PM0.0 ft | 6:18 AM | 4:35 PM | 57% |
| Mon Nov 2 | 5:02 AM7.6 ft | 10:53 AM1.0 ft | 5:18 PM8.3 ft | 11:40 PM0.2 ft | 6:19 AM | 4:34 PM | 46% |
| Tue Nov 3 | 6:08 AM7.7 ft | 12:04 PM0.9 ft | 6:27 PM8.2 ft | 6:21 AM | 4:32 PM | 36% | |
| Wed Nov 4 | 12:45 AM0.3 ft | 7:11 AM8.0 ft | 1:14 PM0.7 ft | 7:34 PM8.1 ft | 6:22 AM | 4:31 PM | 26% |
| Thu Nov 5 | 1:44 AM0.3 ft | 8:07 AM8.3 ft | 2:15 PM0.3 ft | 8:33 PM8.1 ft | 6:23 AM | 4:30 PM | 17% |
| Fri Nov 6 | 2:37 AM0.3 ft | 8:57 AM8.5 ft | 3:09 PM0.0 ft | 9:26 PM8.1 ft | 6:24 AM | 4:29 PM | 10% |
| Sat Nov 7 | 3:24 AM0.3 ft | 9:43 AM8.7 ft | 3:57 PM-0.2 ft | 10:14 PM8.1 ft | 6:26 AM | 4:28 PM | 5% |
| Sun Nov 8 | 4:07 AM0.5 ft | 10:24 AM8.8 ft | 4:41 PM-0.3 ft | 10:59 PM7.9 ft | 6:27 AM | 4:26 PM | 1% |
| Mon Nov 9 | 4:48 AM0.6 ft | 11:04 AM8.8 ft | 5:23 PM-0.3 ft | 11:41 PM7.8 ft | 6:28 AM | 4:25 PM | 0% |
| Tue Nov 10 | 5:26 AM0.8 ft | 11:42 AM8.6 ft | 6:02 PM-0.1 ft | 6:30 AM | 4:24 PM | 1% | |
| Wed Nov 11 | 12:22 AM7.6 ft | 6:04 AM1.0 ft | 12:20 PM8.5 ft | 6:41 PM0.1 ft | 6:31 AM | 4:23 PM | 4% |
| Thu Nov 12 | 1:01 AM7.4 ft | 6:42 AM1.2 ft | 12:58 PM8.2 ft | 7:20 PM0.3 ft | 6:32 AM | 4:22 PM | 10% |
| Fri Nov 13 | 1:41 AM7.2 ft | 7:22 AM1.4 ft | 1:38 PM8.0 ft | 8:01 PM0.6 ft | 6:33 AM | 4:21 PM | 17% |
| Sat Nov 14 | 2:24 AM6.9 ft | 8:04 AM1.6 ft | 2:21 PM7.8 ft | 8:45 PM0.8 ft | 6:35 AM | 4:20 PM | 25% |
| Sun Nov 15 | 3:10 AM6.8 ft | 8:51 AM1.8 ft | 3:09 PM7.6 ft | 9:32 PM1.0 ft | 6:36 AM | 4:19 PM | 35% |
| Mon Nov 16 | 4:00 AM6.7 ft | 9:42 AM1.8 ft | 4:01 PM7.4 ft | 10:21 PM1.1 ft | 6:37 AM | 4:18 PM | 45% |
| Tue Nov 17 | 4:50 AM6.8 ft | 10:36 AM1.8 ft | 4:54 PM7.3 ft | 11:10 PM1.1 ft | 6:38 AM | 4:17 PM | 56% |
| Wed Nov 18 | 5:39 AM7.0 ft | 11:31 AM1.6 ft | 5:49 PM7.3 ft | 11:59 PM1.0 ft | 6:40 AM | 4:17 PM | 66% |
| Thu Nov 19 | 6:28 AM7.3 ft | 12:28 PM1.3 ft | 6:45 PM7.3 ft | 6:41 AM | 4:16 PM | 76% | |
| Fri Nov 20 | 12:49 AM0.9 ft | 7:16 AM7.8 ft | 1:23 PM0.9 ft | 7:39 PM7.5 ft | 6:42 AM | 4:15 PM | 84% |
| Sat Nov 21 | 1:38 AM0.7 ft | 8:02 AM8.3 ft | 2:15 PM0.3 ft | 8:31 PM7.7 ft | 6:43 AM | 4:14 PM | 91% |
| Sun Nov 22 | 2:25 AM0.5 ft | 8:46 AM8.8 ft | 3:04 PM-0.3 ft | 9:21 PM8.0 ft | 6:45 AM | 4:14 PM | 96% |
| Mon Nov 23 | 3:12 AM0.2 ft | 9:31 AM9.3 ft | 3:52 PM-0.8 ft | 10:10 PM8.2 ft | 6:46 AM | 4:13 PM | 99% |
| Tue Nov 24 | 3:59 AM0.0 ft | 10:18 AM9.6 ft | 4:41 PM-1.1 ft | 11:00 PM8.3 ft | 6:47 AM | 4:12 PM | 100% |
| Wed Nov 25 | 4:48 AM-0.1 ft | 11:07 AM9.8 ft | 5:31 PM-1.3 ft | 11:51 PM8.4 ft | 6:48 AM | 4:12 PM | 98% |
| Thu Nov 26 | 5:39 AM-0.2 ft | 11:59 AM9.9 ft | 6:23 PM-1.3 ft | 6:49 AM | 4:11 PM | 95% | |
| Fri Nov 27 | 12:44 AM8.3 ft | 6:32 AM-0.1 ft | 12:52 PM9.8 ft | 7:17 PM-1.1 ft | 6:51 AM | 4:11 PM | 89% |
| Sat Nov 28 | 1:39 AM8.2 ft | 7:27 AM0.1 ft | 1:49 PM9.5 ft | 8:13 PM-0.8 ft | 6:52 AM | 4:10 PM | 81% |
| Sun Nov 29 | 2:37 AM8.1 ft | 8:27 AM0.3 ft | 2:49 PM9.0 ft | 9:13 PM-0.5 ft | 6:53 AM | 4:10 PM | 73% |
| Mon Nov 30 | 3:40 AM8.0 ft | 9:32 AM0.5 ft | 3:55 PM8.6 ft | 10:14 PM-0.2 ft | 6:54 AM | 4:10 PM | 63% |
How these predictions are made
Portsmouth is a subordinate station: NOAA derives its tides from the reference station Portland by applying fixed offsets.
High tide time
+0h 22m
relative to Portland
Low tide time
+0h 17m
relative to reference
High tide height
x0.86
ratio
Low tide height
x0.86
ratio
Nearby tide stations
- Seavey Island0.5 mi · next high 5:34 AM
- Atlantic Heights1.0 mi · next high 5:54 AM
- Fort Point2.1 mi · next high 5:23 AM
- Jaffrey Point2.4 mi · next high 5:19 PM
- Kittery Point2.5 mi · next high 5:15 PM
- Gerrish Island2.9 mi · next high 5:20 PM
Questions
What time is high tide at Portsmouth today?
High tide at Portsmouth, New Hampshire on Sunday, October 18, 2026 is at 5:39 AM (6.6 ft above MLLW) and 5:44 PM (7.3 ft above MLLW), NOAA prediction, local time.
What time is low tide at Portsmouth today?
Low tide at Portsmouth on Sunday, October 18, 2026 is at 11:21 AM (2.0 ft).
What is the water temperature at Portsmouth?
The nearest NOAA water-temperature reading to Portsmouth is 54.7 F at buoy SEIM1 (0.5 mi away), as of October 18, 2026.
Not for navigation. Predictions do not include weather; wind and pressure can move the real water level by a foot or more. Source: NOAA CO-OPS station 8423745.