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 07:01 AM and sunset is at 04:07 PM.
Days 1–3 Weather SummarySome drizzle, heaviest during Wed night. Icy conditions (max 6°C on Wed morning, min -10°C on Tue morning). Winds increasing (light winds from the WNW on Tue morning, fresh winds from the WSW by Thu morning). | Days 4–6 Weather SummaryMostly dry. Icy conditions (max 1°C on Sat morning, min -7°C on Sun night). Wind will be generally light. | Days 7–9 Weather SummaryMostly dry. Freeze-thaw conditions (max 2°C on Wed afternoon, min -8°C on Tue night). Wind will be generally light. | Days 10–12 Weather SummaryModerate rain (total 12mm), heaviest on Thu night. Freeze-thaw conditions (max 14°C on Fri afternoon, min -2°C on Sat afternoon). Winds decreasing (fresh winds from the SSE on Fri morning, calm by Sat night). | |||||||||||||||||||||||||||||||||
Tuesday 9 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||||||
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 | 2:33PM2.80m | 3:21AM2.47m | 3:33PM2.64m | 4:19AM2.42m | 4:35PM2.48m | 5:18AM2.40m | 5:38PM2.35m | 6:15AM2.39m | 6:40PM2.26m | 7:08AM2.41m | 7:39PM2.21m | 7:58AM2.44m | 8:33PM2.19m | 8:44AM2.48m | 9:22PM2.20m | 9:27AM2.51m | 10:07PM2.21m | 10:06AM2.55m | 10:47PM2.22m | 10:43AM2.58m | 11:25PM2.23m | 11:20AM2.59m | 00:02AM2.23m | |||||||||||||
Low Tide | 8:15AM0.12m | 8:59PM-0.12m | 9:16AM0.21m | 9:56PM0.02m | 10:19AM0.29m | 10:54PM0.14m | 11:24AM0.33m | 11:51PM0.24m | 12:27PM0.33m | 00:47AM0.32m | 1:27PM0.29m | 1:39AM0.38m | 2:21PM0.24m | 2:27AM0.41m | 3:09PM0.18m | 3:11AM0.42m | 3:53PM0.13m | 3:52AM0.41m | 4:33PM0.09m | 4:30AM0.41m | 5:11PM0.07m | 5:07AM0.39m | 5:47PM0.05m | 5:43AM0.38m | ||||||||||||
ESE 9 | ESE 9 | S 4 | SSE 6 | SSE 6 | SSE 7 | WSW 4 | WSW 4 | W 4 | W 4 | W 4 | W 3 | ESE 10 | SE 10 | WSW 3 | WSW 3 | W 3 | WNW 3 | NW 3 | NW 3 | WNW 3 | NW 3 | NW 3 | ESE 10 | SSW 3 | S 4 | SSW 4 | SE 10 | SE 10 | SSE 3 | SSE 6 | SE 8 | SE 9 | SE 10 | SE 10 | SE 9 | |
 |  |  | | |  | |  |  | | | | | | | | | | | | | | | | | | | | |  |  |  | | | | | |
clear | cloudy | cloudy | cloudy | cloudy | rain shwrs | clear | some clouds | some clouds | clear | some clouds | some clouds | cloudy | clear | some clouds | some clouds | some clouds | some clouds | clear | clear | cloudy | clear | clear | some clouds | some clouds | some clouds | some clouds | clear | some clouds | mod rain | light rain | rain shwrs | some clouds | clear | clear | some clouds | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 4 | 2 | — | — | — | — | |
max°C | -5 | -4 | 0 | 6 | 6 | 4 | -2 | -4 | -5 | -1 | -2 | -4 | 1 | 1 | -2 | -1 | -2 | -6 | -3 | -4 | -6 | -5 | -6 | -6 | 0 | 2 | 2 | 7 | 7 | 10 | 13 | 14 | 4 | 0 | 0 | 0 |
Moonrise | — | — | 9:35 | — | — | 10:44 | — | — | 11:50 | — | — | — | 12:54 | — | — | 1:58 | — | — | 3:01 | — | — | 4:06 | — | — | 5:10 | — | — | 6:13 | — | — | 7:12 | — | — | 8:03 | — | — |
Moonset | 11:08 | — | — | 11:31 | — | — | 11:51 | — | — | 12:09 | — | — | 12:27 | — | — | 12:46 | — | — | 1:07 | — | — | 1:32 | — | — | 2:03 | — | — | 2:41 | — | — | — | 3:28 | — | — | 4:23 | — |
 | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — |
 | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:08 | — | — | 4:08 | — | — | 4:08 | — | — | 4:09 | — | — | 4:09 | — |
Today's sea temperature in Seavey Island, Portsmouth Harbor (sub) is 7.9° C (Statistics for 09 Dec 1981-2005 – mean: 7.6 max: 9.4 min: 6.4°C) | ||||||||||||||||||||||||||||||||||||
Nearest