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 5°C on Sun morning, 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 moderate fall of snow, heaviest on Tue night. Icy conditions (max 3°C on Thu afternoon, min -5°C on Tue night). Wind will be generally light. | Days 7–9 Weather SummaryLight rain (total 2mm), mostly falling on Fri morning. Freeze-thaw conditions (max 8°C on Fri afternoon, min -13°C on Sat night). Winds decreasing (fresh winds from the WNW on Fri night, light winds from the WNW by Sun night). | Days 10–12 Weather SummaryA dusting of snow giving way to moderate rain (total 10mm) heaviest on Mon night. Freeze-thaw conditions (max 4°C on Tue morning, min -4°C on Mon morning). Wind will be generally light. | |||||||||||||||||||||||||||||||||
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 | ESE 10 | ENE 6 | E 7 | E 7 | ESE 8 | ESE 9 | ESE 10 | ESE 11 | E 11 | E 11 | WNW 4 | NW 3 | NW 3 | ESE 10 | ESE 11 | ESE 10 | ESE 11 | ESE 10 | E 12 | ESE 11 | SSE 6 | SE 7 | NE 6 | ENE 8 | ENE 8 | E 10 | |
 |  |  | | |  | | | |  | |  | | |  | |  | |  | | | | | | | | | | |  | | | | | | | |
clear | some clouds | cloudy | some clouds | clear | clear | clear | some clouds | cloudy | light snow | light snow | mod snow | some clouds | some clouds | some clouds | clear | cloudy | cloudy | light rain | some clouds | clear | clear | clear | clear | clear | clear | clear | some clouds | some clouds | light snow | light rain | clear | some clouds | cloudy | cloudy | cloudy | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | 5 | 5 | — | — | — | — | — | |
max°C | 0 | 1 | 3 | 5 | 0 | -2 | -3 | -2 | -2 | 0 | 0 | 1 | -2 | -1 | 0 | 2 | 3 | 2 | 4 | 8 | 4 | -7 | -8 | -11 | -6 | -5 | -5 | -1 | -1 | 3 | 4 | 2 | 1 | 1 | 1 | 2 |
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