Back Bay Sea Conditions and Tide Table

Back Bay 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 04:47 PM.

Days 1–4 Weather Summary

Light rain (total 4mm), mostly falling on Sun morning. Icy conditions (max 5°C on Sun morning, min -11°C on Tue morning). Winds decreasing (strong winds from the SSW on Sat night, light winds from the NNW by Tue morning).

Days 5–7 Weather Summary

Some drizzle, heaviest during Fri morning. Icy conditions (max 5°C on Fri morning, min -8°C on Tue afternoon). Mainly fresh winds.

Days 8–10 Weather Summary

Light rain (total 8mm), mostly falling on Fri afternoon. Freeze-thaw conditions (max 7°C on Fri afternoon, min -12°C on Sat night). Winds decreasing (strong winds from the NW on Sat morning, light winds from the WNW by Mon morning).

Days 11–13 Weather Summary

Heavy rain (total 22mm), mainly falling on Tue night. Becoming colder with a light covering of snow, mostly falling on Tue night. Freeze-thaw conditions (max 4°C on Tue afternoon, min -5°C on Mon night). Winds decreasing (fresh winds from the ENE on Tue night, calm by Wed night).

Sat
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thu
1
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
11:47AM6.33m
00:15AM5.98m
12:25PM6.35m
00:53AM6.00m
1:04PM6.34m
1:32AM6.00m
1:42PM6.31m
2:11AM6.01m
2:24PM6.26m
2:54AM6.03m
3:08PM6.20m
3:39AM6.07m
3:57PM6.14m
4:28AM6.14m
4:51PM6.10m
5:22AM6.24m
5:49PM6.10m
6:20AM6.39m
6:51PM6.16m
7:19AM6.59m
7:53PM6.28m
8:20AM6.82m
8:53PM6.41m
9:18AM7.01m
Low Tide
6:10PM1.34m
6:20AM1.67m
6:47PM1.32m
6:58AM1.67m
7:25PM1.33m
7:36AM1.67m
8:03PM1.35m
8:16AM1.69m
8:43PM1.39m
9:00AM1.69m
9:26PM1.43m
9:47AM1.68m
10:12PM1.47m
10:39AM1.64m
11:04PM1.49m
11:37AM1.56m
00:01AM1.48m
12:39PM1.41m
1:01AM1.42m
1:42PM1.21m
2:03AM1.30m
2:45PM0.95m
3:04AM1.16m
Wave
height (m) 
direction
period (s) 
0.8
S
12
1.3
S
4
1.5
S
6
1.2
SW
6
0.9
WNW
4
1
NW
4
0.9
NW
4
0.5
NW
3
0.1
NW
2
0
W
3
0.4
ENE
3
0.4
NE
3
0.1
E
4
0.2
SSW
3
0.2
WSW
2
0.3
W
2
0.1
S
8
1.1
SSE
4
1.6
S
6
1
W
4
1.4
NW
5
1.1
NW
4
1.3
WNW
5
1.1
NW
4
0.7
WNW
4
0.5
W
3
0.3
WNW
3
0.1
SW
3
0.4
SE
2
1.1
SSE
4
1.4
SSE
5
1.2
NE
5
0.9
NE
4
0.6
ENE
4
0.2
E
4
0.2
WSW
2
part cloud
light rain
light rain
clear
clear
part cloud
part cloud
part cloud
clear
cloud
cloud
part cloud
part cloud
clear
cloud
part cloud
part cloud
light rain
light rain
rain showers
clear
clear
clear
clear
cloud
part cloud
clear
part cloud
cloud
light snow
mod rain
light snow
cloud
cloud
cloud
cloud
some clouds
light rain
light rain
clear
clear
some clouds
some clouds
some clouds
clear
cloudy
cloudy
some clouds
some clouds
clear
cloudy
some clouds
some clouds
light rain
light rain
rain shwrs
clear
clear
clear
clear
cloudy
some clouds
clear
some clouds
cloudy
light snow
mod rain
light snow
cloudy
cloudy
cloudy
cloudy
 km/h
25
WNW
45
SSW
40
SW
40
WNW
35
WNW
35
NW
35
NW
25
NW
10
NNW
5
NNE
20
NE
15
NE
5
N
15
WSW
15
WSW
15
WNW
5
SE
35
SSE
35
S
45
NW
45
NW
40
NW
40
NW
35
NW
25
WNW
25
W
20
WNW
10
NNW
20
ESE
30
SSE
30
SE
35
NNE
30
NNE
20
NE
10
ENE
15
WSW
 mm 
1
3
1
5
3
10
12
max°C
-1
4
5
5
-2
-8
-6
-7
-10
-7
-6
-8
-5
-3
0
2
3
5
7
7
-7
-10
-11
-11
-9
-6
-6
-4
-1
1
4
3
1
1
0
0
Moonrise
9:40
10:14
10:42
11:05
11:25
11:43
12:01
12:20
12:44
1:12
1:51
2:42
Moonset
4:57
6:01
7:10
8:20
9:31
10:42
11:54
1:07
2:24
3:46
5:09
6:31
Sunrise
8:02
8:03
8:03
8:03
8:03
8:03
8:04
8:04
8:04
8:04
8:04
8:04
Sunset
4:47
4:47
4:49
4:49
4:50
4:50
4:51
4:52
4:52
4:52
4:53
4:54
Today's sea temperature in Back Bay is
6.7° C
(Statistics for 20 Dec 1981-2005 – mean: 6.1 max: 7.6 min: 4.8°C)
Issued (local time): 1 pm Saturday 20 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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