Deer Island (south end), Boston 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 04:15 PM.
Days 1–4 Weather SummaryMostly dry. Icy conditions (max 1°C on Sun morning, min -10°C on Thu night). Winds decreasing (fresh winds from the NNW on Thu afternoon, calm by Fri afternoon). | Days 5–7 Weather SummaryA dusting of snow turning to light rain (total 3mm) on Sun night. Icy conditions (max 7°C on Mon afternoon, min -5°C on Tue afternoon). Winds increasing (light winds from the SSE on Sun night, fresh winds from the W by Mon night). | Days 8–10 Weather SummaryMostly dry. Freeze-thaw conditions (max 1°C on Fri morning, min -8°C on Wed night). Wind will be generally light. | Days 11–13 Weather SummaryA dusting of new snow. Freeze-thaw conditions (max 4°C on Tue afternoon, min -6°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 | 2:38PM2.84m | 3:15AM2.66m | 3:27PM2.79m | 4:03AM2.74m | 4:21PM2.73m | 4:54AM2.83m | 5:19PM2.69m | 5:47AM2.94m | 6:18PM2.66m | 6:43AM3.06m | 7:21PM2.67m | 7:41AM3.18m | 8:21PM2.67m | 8:37AM3.26m | 9:21PM2.74m | 9:33AM3.36m | 10:18PM2.81m | 10:28AM3.40m | 11:13PM2.86m | 11:23AM3.40m | 00:07AM2.89m | 12:18PM3.34m | 00:59AM2.90m | |||||||||||||
Low Tide | 9:00PM0.09m | 9:20AM0.34m | 9:48PM0.11m | 10:15AM0.28m | 10:38PM0.13m | 11:12AM0.20m | 11:31PM0.14m | 12:11PM0.10m | 00:26AM0.14m | 1:11PM-0.02m | 1:24AM0.12m | 2:12PM-0.15m | 2:20AM0.11m | 3:10PM-0.25m | 3:18AM0.04m | 4:05PM-0.36m | 4:13AM-0.03m | 4:59PM-0.42m | 5:07AM-0.06m | 5:51PM-0.42m | 6:01AM-0.07m | 6:42PM-0.37m | 6:54AM-0.03m | |||||||||||||
E 9 | NE 7 | NE 7 | NE 7 | ENE 10 | ENE 8 | ENE 11 | E 11 | ENE 12 | ENE 12 | ENE 11 | SE 4 | S 3 | WSW 4 | W 5 | W 4 | W 4 | SW 4 | SW 4 | WNW 4 | WNW 4 | WNW 4 | WSW 3 | SW 3 | SW 4 | W 3 | NW 4 | NNE 4 | E 10 | E 9 | E 9 | SSW 3 | SSW 3 | SW 3 | WSW 3 | E 8 | |
 |  | |  |  | |  | | | |  |  | |  | | | | | |  | | | | | | | | | | | | | | | | | |
some clouds | clear | some clouds | cloudy | cloudy | some clouds | clear | clear | some clouds | cloudy | light snow | light rain | cloudy | rain shwrs | some clouds | clear | clear | cloudy | some clouds | some clouds | clear | clear | cloudy | some clouds | clear | clear | clear | clear | clear | clear | clear | some clouds | cloudy | cloudy | light snow | some clouds | |
km/h | ||||||||||||||||||||||||||||||||||||
— | — | — | — | — | — | — | — | — | — | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
max°C | 0 | -8 | -7 | -6 | -5 | -4 | -3 | -3 | 1 | 2 | 4 | 5 | 7 | 4 | -3 | -4 | -3 | 0 | 0 | -4 | -5 | -4 | -4 | 1 | 1 | 0 | -5 | -3 | -4 | -3 | -1 | -1 | 3 | 3 | 2 | 3 |
Moonrise | — | — | 10:58 | — | — | 11:19 | — | — | 11:41 | — | — | 12:07 | — | — | 12:38 | — | — | 1:19 | — | — | 2:12 | — | — | — | 3:19 | — | — | 4:36 | — | — | 5:56 | — | — | 7:13 | — | — |
Moonset | — | 10:01 | — | — | 11:11 | — | — | — | 12:21 | — | — | 1:36 | — | — | 2:55 | — | — | 4:16 | — | — | 5:35 | — | — | 6:47 | — | — | 7:45 | — | — | 8:30 | — | — | 9:04 | — | — | 9:31 |
 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 |
 | 4:15 | — | — | 4:16 | — | — | 4:16 | — | — | 4:17 | — | — | 4:19 | — | — | 4:20 | — | — | 4:21 | — | — | 4:22 | — | — | 4:22 | — | — | 4:22 | — | — | 4:23 | — | — | 4:24 | — | — |
Today's sea temperature in Deer Island (south end), Boston Harbor is 5.8° C (Statistics for 25 Dec 1981-2005 – mean: 6.8 max: 8.5 min: 4.8°C) | ||||||||||||||||||||||||||||||||||||
Nearest