Deer Island (south end), Boston Harbor Sea Conditions and Tide Table

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 06:15 AM and sunset is at 05:36 PM.

Days 1–3 Weather Summary

A light covering of new snow, mostly falling on Tue afternoon. Becoming milder with light rain (total 7mm) on Tue night. Icy conditions (max 7°C on Wed afternoon, min -5°C on Mon night). Wind will be generally light.

Days 4–6 Weather Summary

A moderate fall of snow, heaviest on Thu night. Icy conditions (max 11°C on Sun morning, min -1°C on Fri morning). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 2mm), mostly falling on Wed morning. Warm (max 20°C on Wed afternoon, min 3°C on Mon night). Wind will be generally light.

Days 10–12 Weather Summary

Light rain (total 7mm), mostly falling on Wed night. Freeze-thaw conditions (max 19°C on Wed night, min 0°C on Fri morning). Wind will be generally light.

Tuesday
3
Wednesday
4
Thursday
5
Friday
6
Saturday
7
Sunday
8
Monday
9
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wed
18
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
AM
PM
night
AM
PM
night
AM
PM
night
AM
Wave Height Map
High Tide
11:00AM3.12m
11:28PM2.97m
11:47AM3.09m
00:09AM2.99m
12:31PM3.01m
00:49AM2.98m
1:13PM2.90m
1:28AM2.94m
1:54PM2.76m
2:07AM2.87m
2:37PM2.60m
3:49AM2.77m
3:24PM2.45m
3:36AM2.67m
4:17PM2.32m
4:29AM2.59m
5:13PM2.23m
5:25AM2.55m
6:12PM2.20m
6:24AM2.55m
7:12PM2.24m
7:23AM2.61m
8:07PM2.35m
8:17AM2.71m
8:54PM2.50m
9:05AM2.83m
9:36PM2.67m
9:49AM2.95m
Low Tide
5:14PM-0.19m
5:30AM-0.12m
5:56PM-0.15m
6:14AM-0.12m
6:36PM-0.06m
6:58AM-0.09m
7:16PM0.06m
7:40AM-0.00m
7:56PM0.20m
8:24AM0.12m
8:38PM0.35m
9:11AM0.24m
9:23PM0.49m
10:03AM0.37m
10:14PM0.60m
10:58AM0.45m
11:08PM0.67m
11:55AM0.49m
00:05AM0.69m
12:52PM0.48m
1:02AM0.64m
1:48PM0.40m
1:58AM0.53m
2:38PM0.27m
2:49AM0.37m
3:22PM0.14m
3:35AM0.18m
4:03PM0.01m
Wave
height (m) 
direction
period (s) 
0.4
E
8
0.3
E
8
0.5
ESE
4
0.4
ESE
8
0.4
SE
8
0.3
ESE
9
0.3
ESE
9
0.3
ESE
10
0.7
ENE
4
1.8
ENE
7
2
ENE
8
1.7
E
9
1.4
E
9
1.2
E
9
1
E
9
0.7
E
9
0.6
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.4
E
8
0.3
E
8
0.6
ESE
4
0.7
SE
4
0.7
S
4
0.5
SSE
4
0.7
SSW
4
0.5
NE
5
0.5
NE
5
0.6
NE
5
1
ENE
5
1
E
6
1
E
7
0.6
E
7
0.7
NNW
4
0.7
ENE
6
0.4
ENE
6
0.6
ESE
3
0.6
SE
4
0.5
ESE
5
0.6
ESE
6
0.8
ESE
7
0.8
ENE
7
0.5
ENE
7
0.4
ENE
7
0.4
WNW
3
cloud
light snow
rain showers
part cloud
cloud
cloud
light snow
light snow
heavy snow
light snow
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
light rain
part cloud
light rain
light rain
clear
part cloud
cloud
light rain
rain showers
part cloud
clear
clear
part cloud
cloud
light snow
rain showers
part cloud
part cloud
clear
part cloud
part cloud
cloud
cloudy
light snow
rain shwrs
some clouds
cloudy
cloudy
light snow
light snow
heavy snow
light snow
cloudy
cloudy
cloudy
cloudy
some clouds
cloudy
cloudy
some clouds
some clouds
clear
clear
some clouds
some clouds
cloudy
light rain
some clouds
light rain
light rain
clear
some clouds
cloudy
light rain
rain shwrs
some clouds
clear
clear
some clouds
cloudy
light snow
rain shwrs
some clouds
some clouds
clear
some clouds
some clouds
cloudy
 km/h
15
SSW
5
SE
15
SW
10
WNW
5
NW
5
SSW
0
NNE
10
NE
20
NE
25
NE
20
ENE
10
ESE
10
SSW
20
SSW
20
SW
15
WNW
5
WSW
10
SSW
15
WSW
20
WNW
10
WNW
10
SE
20
S
20
SSW
20
SW
15
SW
25
SW
10
NNE
10
ENE
15
E
20
ESE
10
SE
25
SW
15
WSW
25
NW
15
NNW
10
SE
15
S
10
SE
5
NNW
15
W
15
NW
15
NNW
10
SE
15
WSW
20
W
 mm 
7
2
3
1
2
1
1
1
max°C
-2
0
3
5
7
4
0
0
2
0
-1
0
3
7
10
11
11
8
16
15
7
10
10
12
17
20
19
8
8
4
0
8
13
14
12
0
3
4
2
4
8
6
3
4
2
3
Moonrise
6:03
7:11
8:18
9:24
10:29
12:34
1:38
2:37
3:29
4:14
4:51
5:22
5:48
6:11
6:33
Moonset
6:17
6:37
6:57
7:17
7:39
9:05
9:35
10:13
10:58
11:52
12:54
2:00
3:10
4:20
5:31
Sunrise
6:15
6:13
6:11
6:09
6:09
7:07
6:05
6:03
6:01
6:00
5:58
5:56
5:54
5:54
5:52
5:50
Sunset
5:36
5:37
5:37
5:38
5:40
6:42
5:43
5:44
5:45
5:45
5:47
5:49
5:50
5:51
5:52
Today's sea temperature in Deer Island (south end), Boston Harbor is
1.9° C
(Statistics for 03 Mar 1981-2005 – mean: 3.4 max: 4.7 min: 2.0°C)
Issued (local time): 12 am Tuesday 03 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest