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 06:46 AM and sunset is at 06:53 PM.
Days 1–3 Weather SummaryModerate rain (total 12mm), heaviest on Fri morning. Icy conditions (max 12°C on Sat afternoon, min -3°C on Sat night). Winds increasing (light winds from the SE on Thu morning, fresh winds from the NW by Fri afternoon). | Days 4–6 Weather SummaryA dusting of snow turning to light rain (total 5mm) on Mon afternoon. Icy conditions (max 7°C on Tue afternoon, min -3°C on Sun morning). Wind will be generally light. | Days 7–9 Weather SummaryModerate rain (total 12mm), heaviest on Thu morning. Freeze-thaw conditions (max 6°C on Wed afternoon, min -7°C on Fri night). Winds increasing (light winds from the SSW on Wed night, fresh winds from the WNW by Fri night). | Days 10–12 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 2°C on Sat afternoon, min -7°C on Sat morning). Winds decreasing (fresh winds from the WNW on Sat morning, calm by Mon afternoon). | |||||||||||||||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 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 | 4:00PM2.23m | 4:06AM2.51m | 4:51PM2.15m | 4:58AM2.47m | 5:49PM2.11m | 5:57AM2.46m | 6:52PM2.14m | 7:00AM2.51m | 7:53PM2.24m | 8:03AM2.62m | 8:49PM2.41m | 9:01AM2.77m | 9:39PM2.62m | 9:55AM2.92m | 10:25PM2.85m | 10:46AM3.05m | 11:11PM3.05m | 11:35AM3.13m | 11:56PM3.21m | 12:24PM3.14m | 00:42AM3.30m | 1:15PM3.08m | 1:29AM3.31m | |||||||||||||
Low Tide | 9:46AM0.29m | 9:51PM0.53m | 10:34AM0.36m | 10:40PM0.60m | 11:30AM0.40m | 11:38PM0.64m | 12:32PM0.39m | 00:41AM0.60m | 1:33PM0.32m | 1:45AM0.49m | 2:31PM0.19m | 2:44AM0.31m | 3:23PM0.03m | 3:39AM0.09m | 4:11PM-0.13m | 4:30AM-0.14m | 4:57PM-0.25m | 5:20AM-0.33m | 5:42PM-0.32m | 6:09AM-0.46m | 6:28PM-0.33m | 7:00AM-0.51m | 7:15PM-0.26m | |||||||||||||
SE 10 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | SE 9 | ESE 9 | SE 6 | SE 8 | SE 8 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SE 8 | SE 8 | WNW 3 | WNW 3 | WNW 4 | WNW 3 | ESE 11 | ESE 9 | ESE 9 | SE 10 | SE 10 | SE 9 | SE 8 | |
 |  |  |  | |  | | | |  | |  |  |  | | | | | | | |  |  | | | | | | |  | | | | | | | |
cloudy | some clouds | light rain | heavy rain | some clouds | clear | cloudy | cloudy | clear | clear | clear | some clouds | light snow | light rain | some clouds | clear | cloudy | clear | clear | some clouds | some clouds | mod rain | rain shwrs | some clouds | some clouds | some clouds | clear | clear | some clouds | cloudy | some clouds | some clouds | some clouds | cloudy | light snow | some clouds | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | 1.0 | 11 | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | 10 | 2.0 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 5 | 6 | 6 | 6 | 7 | 5 | 8 | 12 | 8 | 0 | 6 | 5 | 1 | 4 | 4 | 6 | 7 | 4 | 3 | 6 | 4 | 3 | 6 | 4 | -1 | 0 | -3 | -3 | 2 | 0 | 1 | 1 | 1 | 0 | 1 | 1 |
Moonrise | 12:43 | — | — | 1:46 | — | — | 2:44 | — | — | 3:35 | — | — | 4:17 | — | — | 4:51 | — | — | 5:19 | — | — | 5:44 | — | — | 6:07 | — | — | 6:29 | — | — | 6:52 | — | — | 7:20 | — | — |
Moonset | 9:20 | — | — | 10:02 | — | — | 10:55 | — | — | 11:58 | — | — | 1:09 | — | — | 2:25 | — | — | — | 3:43 | — | — | 5:02 | — | — | 6:21 | — | — | 7:42 | — | — | — | 9:05 | — | — | 10:29 |
 | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — |
 | — | 6:53 | — | — | 6:54 | — | — | 6:55 | — | — | 6:58 | — | — | 6:59 | — | — | 7:00 | — | — | 7:00 | — | — | 7:01 | — | — | 7:02 | — | — | 7:05 | — | — | 7:06 | — | — | 7:07 | — |
Today's sea temperature in Gerrish Island, Portsmouth Harbor is 4.0 °C (Statistics for 20 Mar 1981-2005 – mean: 3.2 max: 4.5 min: 1.9°C) | ||||||||||||||||||||||||||||||||||||
Nearest