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 05:05 AM and sunset is at 08:21 PM.

Days 1–3 Weather Summary

Moderate rain (total 10mm), heaviest on Sun night. Very warm air temperatures (max 31°C on Sun afternoon, min 15°C on Mon night). Wind will be generally light.

Days 4–6 Weather Summary

Light rain (total 2mm), mostly falling on Thu afternoon. Warm air temperatures (max 25°C on Tue afternoon, min 15°C on Tue night). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 5mm), mostly falling on Fri night. Warm (max 26°C on Sat afternoon, min 14°C on Sat night). Wind will be generally light.

Days 10–12 Weather Summary

Heavy rain (total 49mm), heaviest during Mon night. Warm (max 23°C on Wed afternoon, min 14°C on Mon afternoon). Wind will be generally light.

Days 13–16 Weather Summary

Light rain (total 5mm), mostly falling on Fri night. Warm (max 30°C on Sat afternoon, min 17°C on Thu night). Wind will be generally light.

Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sun
28
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
PM
Wave Height Map
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High Tide
10:07AM2.85m
10:19PM3.43m
11:02AM2.90m
11:13PM3.52m
11:57AM2.94m
00:07AM3.54m
12:54PM2.97m
1:04AM3.51m
1:51PM2.99m
2:01AM3.43m
2:46PM2.99m
2:58AM3.31m
3:41PM2.97m
3:55AM3.14m
4:37PM2.94m
4:55AM2.97m
5:34PM2.92m
5:56AM2.81m
6:29PM2.90m
6:56AM2.67m
7:22PM2.88m
7:56AM2.57m
8:15PM2.87m
8:55AM2.52m
9:06PM2.88m
9:49AM2.50m
9:54PM2.90m
10:36AM2.51m
Low Tide
4:07PM0.12m
4:52AM-0.28m
5:01PM0.05m
5:46AM-0.37m
5:55PM0.02m
6:40AM-0.41m
6:50PM0.01m
7:34AM-0.39m
7:45PM0.03m
8:27AM-0.31m
8:41PM0.08m
9:20AM-0.20m
9:38PM0.16m
10:15AM-0.05m
10:38PM0.23m
11:11AM0.09m
11:40PM0.29m
12:06PM0.23m
00:40AM0.33m
12:59PM0.36m
1:39AM0.34m
1:52PM0.47m
2:38AM0.34m
2:44PM0.53m
3:33AM0.30m
3:35PM0.56m
4:22AM0.27m
4:21PM0.56m
Wave
Height (m)
Direction
Period (s)
0.3
ESE
7
0.3
ESE
8
0.3
E
8
0.2
E
8
0.6
S
3
0.5
S
4
0.4
WNW
3
0.3
E
7
0.3
E
7
0.3
E
7
0.6
SE
4
0.4
E
7
0.3
E
7
0.7
SE
4
0.4
SE
4
0.9
SSE
4
1
SSE
5
0.5
W
3
0.3
ESE
6
0.4
S
3
0.4
WNW
2
0.4
NW
3
0.3
E
5
0.6
W
3
0.4
WNW
3
0.2
E
5
0.2
ENE
6
0.1
E
12
0.2
E
12
0.4
SE
3
0.9
NNE
4
0.8
NE
5
0.5
ENE
5
0.5
E
6
0.4
ENE
6
0.3
E
6
0.2
E
6
0.4
SE
2
0.4
SSW
3
0.6
S
4
0.8
S
4
0.5
S
4
0.2
ESE
9
0.4
SE
4
0.3
ESE
9
0.3
ESE
9
0.4
ESE
10
clear
clear
clear
clear
cloud
mod rain
clear
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
cloud
cloud
rain showers
clear
cloud
cloud
thunderstorm
clear
clear
rain showers
clear
clear
part cloud
cloud
heavy rain
heavy rain
cloud
clear
rain showers
clear
part cloud
clear
clear
cloud
part cloud
cloud
cloud
light rain
part cloud
part cloud
thunderstorm
clear
clear
clear
clear
clear
clear
cloudy
mod rain
clear
some clouds
clear
clear
some clouds
clear
some clouds
some clouds
cloudy
cloudy
rain shwrs
clear
cloudy
cloudy
risk tstorm
clear
clear
rain shwrs
clear
clear
some clouds
cloudy
heavy rain
heavy rain
cloudy
clear
rain shwrs
clear
some clouds
clear
clear
cloudy
some clouds
cloudy
cloudy
light rain
some clouds
some clouds
risk tstorm
clear
clear
km/h
10
NNW
5
NE
10
W
15
SSW
20
SSW
15
S
20
WNW
10
NW
10
WNW
10
SW
20
SW
10
SW
15
S
20
S
15
S
30
S
25
SW
15
W
10
SW
15
SSW
20
WNW
15
WNW
20
W
20
W
20
WNW
20
WNW
0
NNW
10
ESE
10
E
5
NNE
20
NNE
10
ENE
5
WNW
10
NNW
10
ESE
10
WSW
5
SSW
15
SE
15
SW
25
SSW
20
SSW
10
SW
10
WSW
10
WSW
10
W
5
WNW
5
NW
10
2
4
1
15
33
1
4
1
max °C
26
28
26
29
31
24
23
25
21
23
25
21
23
25
19
23
22
25
21
25
20
23
26
17
20
24
22
17
14
16
15
19
17
21
23
21
22
25
22
23
25
20
26
30
25
25
28
Moonrise
3:12
4:02
5:05
6:20
7:41
9:01
10:17
11:29
12:37
1:42
2:47
3:52
4:57
6:00
7:00
7:55
Moonset
7:15
8:31
9:35
10:24
11:02
11:31
11:56
12:17
12:37
12:57
1:18
1:43
2:12
2:47
3:29
Sunrise
5:05
5:05
5:05
5:05
5:05
5:05
5:05
5:05
5:07
5:07
5:07
5:07
5:07
5:07
5:07
5:09
Sunset
8:21
8:21
8:22
8:22
8:22
8:22
8:22
8:22
8:23
8:23
8:23
8:23
8:23
8:23
8:23
8:23
Today's sea temperature in Deer Island (south end), Boston Harbor is
17.4° C
(Statistics for 13 Jun 1981-2005 – mean: 14.4 max: 17.0 min: 12.5°C)
Issued (local time): 7 am Saturday 13 Jun 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest