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 07:37 AM and sunset is at 07:35 PM.

Days 1–3 Weather Summary

Moderate rain (total 10mm), heaviest on Tue morning. Icy conditions (max 11°C on Tue morning, min -8°C on Wed morning). Winds decreasing (gales from the SSW on Tue morning, calm by Wed night).

Days 4–6 Weather Summary

Moderate rain (total 11mm), heaviest on Sun night. Icy conditions (max 8°C on Sun night, min -1°C on Fri night). Winds increasing (calm on Sat night, near gales from the SSW by Sun night).

Days 7–9 Weather Summary

Mostly dry. Freeze-thaw conditions (max 5°C on Mon morning, min -12°C on Wed night). Winds decreasing (strong winds from the NW on Mon night, light winds from the NNE by Wed night).

Days 10–12 Weather Summary

A dusting of snow turning to light rain (total 6mm) on Thu night. Freeze-thaw conditions (max 9°C on Fri afternoon, min -12°C on Thu morning). Mainly strong winds.

Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tuesday
31
Wed
1
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
High Tide
11:23AM6.51m
11:46PM6.54m
12:05PM6.77m
00:26AM6.85m
12:47PM6.97m
1:07AM7.09m
1:29PM7.06m
1:50AM7.21m
2:14PM7.03m
2:34AM7.21m
3:01PM6.89m
3:22AM7.09m
3:53PM6.65m
4:15AM6.87m
4:50PM6.36m
5:15AM6.60m
5:55PM6.11m
6:23AM6.38m
7:06PM5.97m
7:35AM6.28m
8:18PM6.01m
8:46AM6.33m
9:24PM6.18m
9:50AM6.47m
10:22PM6.42m
10:45AM6.63m
11:13PM6.64m
11:35AM6.75m
Low Tide
5:41PM1.13m
5:59AM1.06m
6:21PM0.87m
6:41AM0.76m
7:01PM0.69m
7:23AM0.55m
7:42PM0.61m
8:06AM0.47m
8:25PM0.64m
8:52AM0.51m
9:11PM0.79m
9:42AM0.68m
10:01PM1.04m
10:36AM0.94m
10:58PM1.33m
11:38AM1.21m
00:03AM1.59m
12:48PM1.42m
1:16AM1.72m
2:01PM1.47m
2:30AM1.67m
3:11PM1.36m
3:38AM1.47m
4:11PM1.18m
4:36AM1.22m
5:04PM1.01m
5:27AM1.00m
5:50PM0.89m
Wave
height (m) 
direction
period (s) 
3.5
S
8
1.7
S
7
1.1
SW
6
0.9
SW
6
0.6
S
11
0.3
S
10
0.3
S
10
0.3
S
10
0.3
S
9
0.5
S
4
0.9
S
4
0.5
S
5
0.2
WNW
2
0.1
SW
3
0.1
S
8
0.1
S
2
1.4
S
5
2.5
S
7
1.3
SSW
6
1.1
SW
6
1.2
WNW
4
1.1
NW
4
0.7
NW
4
0.6
WNW
4
0.8
W
4
0.9
NW
4
0.4
N
3
0.1
SE
2
0.3
SSE
2
2.2
S
7
1.4
S
6
1.4
S
6
0.6
S
10
0.6
SSW
4
0.8
WSW
5
0.9
NW
4
0.3
W
4
0.2
S
8
0.3
SSW
3
1.5
SSE
5
3
SSE
7
1.1
S
10
1
SW
5
0.9
WNW
4
0.6
WSW
5
0.3
S
9
0.7
SSW
3
mod rain
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
mod rain
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
clear
part cloud
light snow
light snow
cloud
rain showers
clear
cloud
part cloud
clear
clear
clear
cloud
cloud
heavy rain
rain showers
clear
part cloud
clear
part cloud
part cloud
mod rain
some clouds
some clouds
clear
some clouds
some clouds
some clouds
clear
some clouds
cloudy
cloudy
some clouds
some clouds
some clouds
some clouds
cloudy
light rain
mod rain
clear
some clouds
some clouds
clear
clear
some clouds
some clouds
clear
clear
some clouds
light snow
light snow
cloudy
rain shwrs
clear
cloudy
some clouds
clear
clear
clear
cloudy
cloudy
heavy rain
rain shwrs
clear
some clouds
clear
some clouds
some clouds
 km/h
65
SSW
45
SW
35
WNW
30
W
25
WNW
5
N
15
SSE
15
SSE
15
S
20
S
30
SSW
20
WSW
15
NW
10
WNW
0
NE
15
SSE
45
S
55
SSW
35
WSW
40
WNW
40
NW
40
NW
25
WNW
25
W
30
NNW
35
NW
20
N
10
ESE
25
SSE
40
SSW
40
SSW
30
WSW
15
SW
25
W
35
NW
35
NNW
20
NNW
15
S
20
S
45
SE
65
SSE
25
W
35
W
35
WNW
25
WNW
15
W
30
SW
 mm 
10
2
9
5
1
17
5
max°C
11
4
1
-6
-2
-2
-1
-1
-1
0
2
3
1
4
2
1
4
8
5
3
-2
-4
3
1
-5
-4
-6
-9
-3
7
8
9
6
5
2
-4
-7
-4
-2
3
7
6
0
1
-1
2
4
Moonrise
6:58
7:17
7:36
7:56
8:20
8:49
9:26
10:14
11:16
12:28
1:45
3:02
4:17
5:29
6:40
7:48
Moonset
6:11
7:27
8:43
10:02
11:24
12:47
2:05
3:14
4:09
4:51
5:23
5:47
6:08
6:26
6:43
Sunrise
7:37
7:35
7:33
7:31
7:28
7:26
7:24
7:24
7:22
7:20
7:18
7:16
7:13
7:11
7:09
7:09
Sunset
7:35
7:36
7:37
7:38
7:39
7:40
7:43
7:44
7:45
7:46
7:47
7:49
7:50
7:52
7:52
7:53
Today's sea temperature in Back Bay is
2.2° C
(Statistics for 17 Mar 1981-2005 – mean: 3.1 max: 5.1 min: 1.5°C)
Issued (local time): 2 am Tuesday 17 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest