Gerrish Island, Portsmouth Harbor 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 07:05 AM and sunset is at 04:07 PM.
Days 1–3 Weather SummaryMostly dry. Icy conditions (max 2°C on Sat afternoon, min -10°C on Sun night). Mainly fresh winds. | Days 4–6 Weather SummaryMostly dry. Icy conditions (max 6°C on Wed morning, min -5°C on Mon night). Winds decreasing (fresh winds from the SW on Wed morning, calm by Thu morning). | Days 7–9 Weather SummaryModerate rain (total 11mm) heaviest on Thu night, then becoming colder with a dusting of snow on Sat morning. Freeze-thaw conditions (max 11°C on Sat night, min -5°C on Fri night). Winds decreasing (strong winds from the W on Fri afternoon, light winds from the W by Sat morning). | Days 10–12 Weather SummaryLight rain (total 5mm), mostly falling on Tue afternoon. Freeze-thaw conditions (max 7°C on Tue afternoon, min -15°C on Wed night). Winds increasing (light winds from the NNW on Mon afternoon, strong winds from the S by Tue morning). | ||||||||||||||||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wed 24 | ||||||||||||||||||||||||
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 | |
Wave Height Map |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
High Tide | 6:18PM2.42m | 6:47AM2.56m | 7:17PM2.37m | 7:37AM2.60m | 8:12PM2.35m | 8:23AM2.64m | 9:01PM2.35m | 9:05AM2.68m | 9:45PM2.36m | 9:45AM2.72m | 10:26PM2.37m | 10:22AM2.75m | 11:04PM2.38m | 10:58AM2.77m | 11:40PM2.38m | 11:34AM2.78m | 00:16AM2.39m | 12:11PM2.77m | 00:52AM2.40m | 12:50PM2.76m | 1:30AM2.42m | 1:31PM2.73m | |||||||||||||
Low Tide | 12:06PM0.35m | 00:25AM0.35m | 1:05PM0.31m | 1:17AM0.41m | 1:59PM0.26m | 2:06AM0.44m | 2:48PM0.19m | 2:50AM0.45m | 3:32PM0.14m | 3:31AM0.44m | 4:13PM0.09m | 4:09AM0.43m | 4:50PM0.07m | 4:46AM0.42m | 5:26PM0.06m | 5:22AM0.41m | 6:01PM0.05m | 5:59AM0.39m | 6:37PM0.05m | 6:37AM0.38m | 7:14PM0.05m | 7:19AM0.36m | |||||||||||||
SW 3 | S 3 | SSE 5 | SE 9 | N 3 | NE 6 | NW 3 | NW 3 | SE 10 | SE 10 | SE 10 | SSW 3 | S 4 | SSW 4 | WSW 3 | SE 10 | ESE 9 | SSE 6 | SSE 7 | WSW 4 | W 4 | SE 10 | SSW 2 | SSE 6 | SSE 8 | SE 8 | NW 3 | NW 3 | SE 9 | SE 8 | S 5 | SSE 6 | SSE 8 | WNW 4 | WNW 4 | |
 | |  | | |  |  |  |  | | | | | | | | |  | | | |  | |  |  | | | | | | | | | | | |
cloudy | cloudy | cloudy | cloudy | cloudy | clear | clear | some clouds | some clouds | clear | some clouds | some clouds | cloudy | some clouds | some clouds | some clouds | cloudy | rain shwrs | some clouds | clear | some clouds | light snow | cloudy | light rain | light rain | some clouds | clear | clear | clear | some clouds | light rain | light rain | some clouds | clear | clear | |
km/h | |||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | — | — | — | — | — | 2 | 2 | — | — | — | — | — | 1 | 4 | — | — | — | |
max°C | 1 | 2 | 1 | -1 | -3 | -7 | -5 | -5 | -4 | -1 | 0 | 0 | 6 | 5 | 5 | 1 | 3 | 10 | 10 | 3 | -2 | -1 | 0 | 11 | 11 | 7 | 1 | -3 | -3 | -1 | 5 | 7 | 7 | -9 | -11 |
Moonrise | 12:54 | — | — | 1:58 | — | — | 3:01 | — | — | 4:05 | — | — | 5:10 | — | — | 6:13 | — | — | 7:11 | — | — | 8:03 | — | — | 8:47 | — | — | 9:22 | — | — | 9:51 | — | — | 10:16 | — |
Moonset | 12:27 | — | — | 12:46 | — | — | 1:07 | — | — | 1:32 | — | — | 2:02 | — | — | 2:41 | — | — | — | 3:27 | — | — | 4:23 | — | — | 5:26 | — | — | 6:33 | — | — | 7:42 | — | — | 8:51 |
 | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — |
 | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:08 | — | — | 4:08 | — | — | 4:08 | — | — | 4:09 | — | — | 4:09 | — | — | 4:10 | — | — | 4:10 | — | — | 4:12 |
Today's sea temperature in Gerrish Island, Portsmouth Harbor is 7.7° C (Statistics for 13 Dec 1981-2005 – mean: 7.3 max: 8.7 min: 5.6°C) | |||||||||||||||||||||||||||||||||||
Nearest