Seavey Island, Portsmouth Harbor (sub) Sea Conditions table showing wave height, swell direction and period.
High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at 07:09 AM and sunset is at 04:09 PM.
Days 1–3 Weather SummaryMostly dry. Icy conditions (max 4°C on Sat night, min -7°C on Sun night). Winds decreasing (fresh winds from the WNW on Sun night, calm by Mon night). | Days 4–6 Weather SummaryA dusting of snow turning to light rain (total 3mm) on Tue afternoon. Icy conditions (max 4°C on Thu afternoon, min -2°C on Tue night). Winds decreasing (fresh winds from the N on Tue night, calm by Thu night). | Days 7–9 Weather SummaryLight rain (total 4mm) at first, then becoming colder with a dusting of snow on Sat night. Freeze-thaw conditions (max 7°C on Fri afternoon, min -11°C on Sun night). Winds decreasing (fresh winds from the WNW on Fri night, calm by Sat morning). | Days 10–12 Weather SummaryMostly dry. Temperatures will be below freezing (max -3°C on Mon night, min -11°C on Tue morning). Winds decreasing (fresh winds from the WNW on Tue afternoon, calm by Thu morning). | |||||||||||||||||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 31 | |||||||||||||||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
Wave Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
High Tide | 11:20AM2.59m | 00:02AM2.23m | 11:56AM2.60m | 00:38AM2.24m | 12:33PM2.60m | 1:14AM2.25m | 1:12PM2.58m | 1:52AM2.27m | 1:54PM2.56m | 2:33AM2.31m | 2:38PM2.52m | 3:17AM2.37m | 3:28PM2.48m | 4:05AM2.44m | 4:22PM2.42m | 4:57AM2.52m | 5:22PM2.38m | 5:52AM2.62m | 6:26PM2.35m | 6:50AM2.72m | 7:31PM2.37m | 7:49AM2.84m | 8:34PM2.39m | |||||||||||||
Low Tide | 5:47PM0.05m | 5:43AM0.38m | 6:22PM0.05m | 6:20AM0.37m | 6:58PM0.05m | 6:58AM0.36m | 7:35PM0.05m | 7:40AM0.34m | 8:15PM0.05m | 8:26AM0.32m | 8:58PM0.06m | 9:16AM0.29m | 9:44PM0.08m | 10:11AM0.25m | 10:35PM0.10m | 11:10AM0.18m | 11:29PM0.12m | 12:14PM0.09m | 00:28AM0.12m | 1:18PM-0.03m | 1:28AM0.11m | 2:20PM-0.16m | 2:26AM0.09m | |||||||||||||
SE 11 | SE 11 | SE 10 | SE 9 | SE 9 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 10 | SSE 5 | SE 6 | E 7 | E 8 | E 10 | E 11 | E 11 | E 11 | SSE 4 | SSE 5 | WNW 4 | ESE 12 | ESE 11 | SSE 3 | SSE 5 | NW 3 | NW 4 | WNW 3 | W 3 | SW 4 | WNW 4 | WNW 4 | WNW 4 | W 4 | W 4 | W 3 | |
 |  |  | | |  | | |  |  |  | | | | | | | | |  | | | |  | | | | | | | | | | | | | |
clear | some clouds | some clouds | some clouds | clear | clear | clear | clear | cloudy | light snow | light rain | some clouds | some clouds | clear | some clouds | clear | some clouds | some clouds | light rain | cloudy | clear | some clouds | cloudy | light snow | some clouds | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 1 | 1 | 4 | 4 | 0 | -2 | -3 | -2 | -3 | 1 | 2 | -1 | 1 | 1 | -1 | 3 | 4 | 1 | 4 | 7 | 0 | -6 | -3 | 0 | 2 | -1 | -7 | -8 | -6 | -3 | -9 | -10 | -10 | -5 | -5 | -8 |
Moonrise | 8:03 | — | — | 8:47 | — | — | 9:23 | — | — | 9:52 | — | — | 10:16 | — | — | 10:38 | — | — | 10:58 | — | — | 11:18 | — | — | 11:39 | — | — | 12:04 | — | — | 12:35 | — | — | 1:15 | — | — |
Moonset | — | 4:23 | — | — | 5:26 | — | — | 6:33 | — | — | 7:42 | — | — | 8:51 | — | — | — | 10:00 | — | — | 11:10 | — | — | — | 12:22 | — | — | 1:37 | — | — | 2:56 | — | — | 4:18 | — | — |
 | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — |
 | — | 4:09 | — | — | 4:10 | — | — | 4:10 | — | — | 4:12 | — | — | 4:12 | — | — | 4:13 | — | — | 4:13 | — | — | 4:14 | — | — | 4:15 | — | — | 4:15 | — | — | 4:15 | — | — | 4:16 | — |
Today's sea temperature in Seavey Island, Portsmouth Harbor (sub) is 6.8° C (Statistics for 20 Dec 1981-2005 – mean: 6.6 max: 7.7 min: 5.0°C) | ||||||||||||||||||||||||||||||||||||
Nearest