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 04:07 PM.
Days 1–4 Weather SummaryMostly dry. Icy conditions (max 2°C on Sat afternoon, min -9°C on Mon night). Winds increasing (calm on Sun afternoon, fresh winds from the NW by Sun night). | Days 5–7 Weather SummaryMostly dry. Icy conditions (max 7°C on Wed afternoon, min -2°C on Tue afternoon). Winds decreasing (fresh winds from the SW on Wed afternoon, light winds from the NNW by Fri morning). | Days 8–10 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 2°C on Fri afternoon, min -8°C on Sun night). Winds increasing (light winds from the N on Fri afternoon, fresh winds from the NNE by Sat night). | Days 11–13 Weather SummaryMostly dry. Freeze-thaw conditions (max 1°C on Wed afternoon, min -9°C on Mon night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Sat 6 | Sunday 7 | Monday 8 | Tuesday 9 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | ||||||||||||||||||||||||
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 | 00:10AM2.83m | 12:17PM3.29m | 1:04AM2.77m | 1:13PM3.16m | 2:01AM2.70m | 2:10PM2.99m | 2:58AM2.63m | 3:10PM2.81m | 3:57AM2.58m | 4:12PM2.65m | 4:56AM2.55m | 5:16PM2.51m | 5:53AM2.55m | 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 | |||||||||||||
Low Tide | 5:53PM-0.49m | 6:01AM-0.05m | 6:47PM-0.41m | 6:56AM0.03m | 7:41PM-0.28m | 7:54AM0.13m | 8:37PM-0.13m | 8:55AM0.23m | 9:35PM0.02m | 9:58AM0.30m | 10:33PM0.16m | 11:03AM0.35m | 11:30PM0.27m | 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 | |||||||||||||
SE 10 | SE 9 | SE 9 | SE 9 | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | SSW 3 | S 6 | SSW 4 | SSE 6 | SW 4 | W 3 | SE 10 | SE 10 | SE 8 | SE 8 | SE 8 | ENE 4 | ENE 4 | ENE 6 | E 8 | E 9 | E 10 | ESE 9 | ESE 8 | NE 5 | NW 3 | NW 3 | WSW 3 | SSW 3 | SSW 3 | SW 3 | SE 10 | |
 |  | |  | |  | | | | |  | | |  | | | | | | | | |  | | | | | | | | | | | | | | |
some clouds | clear | some clouds | cloudy | clear | clear | clear | clear | some clouds | cloudy | cloudy | cloudy | cloudy | some clouds | clear | some clouds | some clouds | clear | some clouds | cloudy | cloudy | cloudy | light snow | cloudy | some clouds | clear | cloudy | cloudy | clear | cloudy | some clouds | clear | clear | some clouds | some clouds | cloudy | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 2 | 0 | 1 | 1 | 1 | -6 | -6 | -8 | -3 | -1 | 1 | 6 | 7 | 6 | 1 | 0 | -1 | 2 | 2 | 0 | 0 | 0 | -3 | -2 | -5 | -7 | -4 | -4 | -6 | -6 | -6 | -4 | 0 | 1 | 1 | 0 |
Moonrise | 5:43 | — | — | 7:02 | — | — | 8:20 | — | — | — | 9:34 | — | — | 10:44 | — | — | 11:50 | — | — | — | 12:54 | — | — | 1:58 | — | — | 3:01 | — | — | 4:05 | — | — | 5:10 | — | — | 6:13 |
Moonset | — | — | 10:01 | — | — | 10:39 | — | — | 11:07 | — | — | 11:31 | — | — | 11:51 | — | — | 12:09 | — | — | 12:27 | — | — | 12:46 | — | — | 1:07 | — | — | 1:32 | — | — | 2:02 | — | — | 2:41 |
 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 |
 | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:07 | — | — | 4:08 | — | — |
Today's sea temperature in Gerrish Island, Portsmouth Harbor is 8.5° C (Statistics for 06 Dec 1981-2005 – mean: 7.9 max: 9.3 min: 6.3°C) | ||||||||||||||||||||||||||||||||||||
Nearest