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 — and sunset is at 04:13 PM.
Days 1–4 Weather SummaryMostly dry. Icy conditions (max 1°C on Sun morning, min -13°C on Thu night). Winds decreasing (fresh winds from the NW on Thu afternoon, light winds from the N by Fri afternoon). | Days 5–7 Weather SummaryA dusting of snow turning to light rain (total 7mm) on Sun night. Icy conditions (max 4°C on Mon afternoon, min -8°C on Tue night). Winds increasing (calm on Mon morning, strong winds from the WSW by Mon night). | Days 8–10 Weather SummaryMostly dry. Temperatures will be below freezing (max 0°C on Wed afternoon, min -11°C on Wed night). Mainly fresh winds. | Days 11–13 Weather SummaryMostly dry. Freeze-thaw conditions (max 3°C on Mon morning, min -8°C on Sat night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Thu 25 | Friday 26 | Saturday 27 | Sunday 28 | Monday 29 | Tuesday 30 | Wednesday 31 | Thursday 1 | Friday 2 | Saturday 3 | Sunday 4 | Monday 5 | Tue 6 | ||||||||||||||||||||||||
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 | AM | |
Wave Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
High Tide | 2:16PM2.69m | 2:54AM2.52m | 3:06PM2.64m | 3:42AM2.59m | 4:00PM2.58m | 4:34AM2.68m | 5:00PM2.54m | 5:30AM2.79m | 6:04PM2.51m | 6:29AM2.90m | 7:10PM2.53m | 7:28AM3.03m | 8:12PM2.55m | 8:25AM3.12m | 9:13PM2.63m | 9:23AM3.21m | 10:11PM2.71m | 10:19AM3.27m | 11:05PM2.77m | 11:13AM3.27m | 11:57PM2.80m | 12:06PM3.21m | 00:48AM2.80m | 12:58PM3.10m | ||||||||||||
Low Tide | 8:36PM0.07m | 8:55AM0.31m | 9:23PM0.09m | 9:50AM0.26m | 10:13PM0.11m | 10:49AM0.19m | 11:08PM0.13m | 11:53AM0.10m | 00:07AM0.14m | 12:57PM-0.03m | 1:07AM0.11m | 1:59PM-0.17m | 2:05AM0.10m | 2:58PM-0.28m | 3:04AM0.03m | 3:55PM-0.38m | 4:01AM-0.04m | 4:49PM-0.44m | 4:56AM-0.08m | 5:41PM-0.44m | 5:49AM-0.08m | 6:31PM-0.39m | 6:43AM-0.05m | |||||||||||||
E 9 | ESE 11 | E 11 | E 10 | E 10 | E 12 | E 11 | E 11 | ESE 12 | ESE 12 | ESE 11 | SSE 4 | SE 5 | SW 4 | W 4 | W 4 | W 4 | SW 4 | SW 4 | W 3 | W 3 | W 3 | WSW 3 | SW 3 | SW 3 | WSW 3 | NW 3 | ESE 10 | ESE 10 | SE 9 | SE 9 | SSW 3 | SSW 4 | S 5 | WSW 2 | ESE 9 | |
 |  |  | |  | | | | |  |  |  | |  | | | | | | | | | | | | | | | | | | | | | | | |
clear | clear | some clouds | some clouds | cloudy | some clouds | clear | clear | clear | cloudy | light snow | light rain | light rain | some clouds | some clouds | some clouds | clear | cloudy | some clouds | clear | clear | clear | cloudy | cloudy | clear | clear | clear | clear | clear | clear | some clouds | cloudy | cloudy | some clouds | some clouds | some clouds | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | 3 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | -2 | -8 | -7 | -6 | -6 | -5 | -3 | -4 | 1 | 1 | 3 | 3 | 4 | 4 | -5 | -6 | -5 | 0 | 0 | -6 | -7 | -6 | -5 | 0 | 0 | -1 | -6 | -5 | -7 | -4 | -3 | -2 | 3 | 3 | 3 | 3 |
Moonrise | — | — | 10:57 | — | — | 11:17 | — | — | 11:39 | — | — | 12:04 | — | — | 12:35 | — | — | 1:15 | — | — | 2:08 | — | — | — | 3:15 | — | — | 4:31 | — | — | 5:52 | — | — | 7:11 | — | — |
Moonset | — | 10:00 | — | — | 11:10 | — | — | — | 12:21 | — | — | 1:36 | — | — | 2:56 | — | — | 4:18 | — | — | 5:38 | — | — | 6:49 | — | — | 7:47 | — | — | 8:31 | — | — | 9:05 | — | — | 9:31 |
 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 |
 | 4:13 | — | — | 4:13 | — | — | 4:14 | — | — | 4:15 | — | — | 4:15 | — | — | 4:15 | — | — | 4:16 | — | — | 4:17 | — | — | 4:19 | — | — | 4:20 | — | — | 4:21 | — | — | 4:22 | — | — |
Today's sea temperature in Gerrish Island, Portsmouth Harbor is 6.7° C (Statistics for 25 Dec 1981-2005 – mean: 6.1 max: 7.4 min: 4.2°C) | ||||||||||||||||||||||||||||||||||||
Nearest