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 08:00 AM and sunset is at 04:46 PM.

Days 1–3 Weather Summary

Moderate rain (total 18mm), heaviest on Fri night. Icy conditions (max 12°C on Fri night, min -4°C on Sun night). Winds decreasing (gales from the S on Fri night, light winds from the W by Sat night).

Days 4–6 Weather Summary

A dusting of snow turning to light rain (total 6mm) on Tue night. Icy conditions (max 3°C on Tue night, min -10°C on Mon night). Winds increasing (light winds from the W on Tue morning, strong winds from the NW by Tue night).

Days 7–9 Weather Summary

A light covering of new snow, mostly falling on Fri morning. Becoming milder with light rain (total 2mm) on Fri afternoon. Freeze-thaw conditions (max 3°C on Fri afternoon, min -8°C on Sat night). Mainly fresh winds.

Days 10–12 Weather Summary

Mostly dry. Temperatures will be below freezing (max -3°C on Tue afternoon, min -14°C on Sun night). Winds decreasing (strong winds from the WNW on Mon morning, light winds from the N by Tue night).

Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
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
11:09AM6.28m
11:37PM5.95m
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
Low Tide
5:04AM1.74m
5:32PM1.39m
5:42AM1.70m
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
Wave
height (m) 
direction
period (s) 
2
S
6
3
S
7
1.5
S
11
1.5
SW
7
0.8
S
12
1.2
S
4
1.3
SSW
6
1.2
W
4
1
WNW
4
1
NW
4
1
NW
4
0.6
NW
4
0.1
SW
2
1.1
S
4
1
SSE
6
1
NW
4
0.9
NNW
4
0.4
NNW
3
0.2
W
2
0.3
WNW
3
0.1
SE
2
1.1
ESE
4
0.8
ESE
5
0.8
W
3
0.6
WSW
5
0.6
WSW
5
0.4
WSW
4
0.6
NW
3
0.8
WNW
4
1
WNW
4
1.2
WNW
4
0.9
WNW
4
0.6
WNW
4
0.5
W
3
0.3
WNW
3
0.4
NE
3
part cloud
mod rain
rain showers
part cloud
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
cloud
light snow
light snow
part cloud
clear
clear
cloud
clear
part cloud
mod snow
light rain
part cloud
cloud
cloud
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
some clouds
mod rain
rain shwrs
some clouds
clear
some clouds
some clouds
clear
clear
some clouds
some clouds
some clouds
cloudy
light snow
light snow
some clouds
clear
clear
cloudy
clear
some clouds
mod snow
light rain
some clouds
cloudy
cloudy
some clouds
clear
clear
some clouds
clear
some clouds
some clouds
cloudy
some clouds
some clouds
 km/h
45
S
65
S
40
WSW
45
WNW
25
WNW
45
SSW
35
SW
40
WNW
35
WNW
35
NW
35
NW
25
NW
15
SW
40
SSE
35
WNW
35
NNW
35
NNW
20
NNW
20
WSW
15
NW
10
E
35
E
15
E
35
W
25
WNW
25
NW
20
NW
30
NW
30
WNW
35
WNW
40
WNW
35
NW
25
WNW
20
WNW
15
NW
25
NE
 mm 
6
12
6
2
max°C
10
11
12
-3
0
5
6
5
-2
-6
-6
-7
-7
0
3
-3
-1
-4
-4
-2
-2
0
3
3
-4
-4
-5
-8
-6
-10
-13
-9
-10
-6
-3
-3
Moonrise
8:05
8:57
9:40
10:14
10:42
11:05
11:25
11:43
12:01
12:20
12:44
1:12
Moonset
4:02
4:57
6:01
7:10
8:20
9:31
10:42
11:54
1:07
2:24
3:46
Sunrise
8:00
8:02
8:02
8:03
8:03
8:03
8:03
8:03
8:04
8:04
8:04
8:04
Sunset
4:46
4:47
4:47
4:49
4:49
4:50
4:50
4:51
4:52
4:52
4:52
4:53
Today's sea temperature in Back Bay is
6.8° C
(Statistics for 19 Dec 1981-2005 – mean: 6.2 max: 7.7 min: 4.8°C)
Issued (local time): 7 am Friday 19 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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