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 07:58 AM and sunset is at 04:45 PM.

Days 1–3 Weather Summary

Some drizzle, heaviest during Wed night. Icy conditions (max 8°C on Thu night, min -9°C on Tue morning). Winds decreasing (strong winds from the SW on Wed afternoon, light winds from the WNW by Thu morning).

Days 4–6 Weather Summary

Heavy rain (total 21mm), heaviest during Fri night. Later becoming colder with a dusting of snow on Sun afternoon. Icy conditions (max 11°C on Fri afternoon, min -5°C on Sat morning). Winds decreasing (near gales from the S on Fri afternoon, light winds from the WSW by Sat night).

Days 7–9 Weather Summary

Mostly dry. Freeze-thaw conditions (max 2°C on Tue afternoon, min -11°C on Wed night). Mainly strong winds.

Days 10–12 Weather Summary

A dusting of snow turning to light rain (total 5mm) on Thu night. Freeze-thaw conditions (max 5°C on Fri morning, min -11°C on Thu morning). Winds increasing (calm on Thu afternoon, near gales from the NW by Fri morning).

Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
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
9:07AM6.08m
9:34PM5.78m
9:49AM6.15m
10:17PM5.84m
10:30AM6.22m
10:58PM5.90m
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
Low Tide
3:30PM1.66m
3:42AM1.85m
4:12PM1.56m
4:24AM1.80m
4:53PM1.47m
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
Wave
height (m) 
direction
period (s) 
0.4
WNW
3
0.4
WSW
3
1.3
SSW
5
1.6
SSW
5
1.5
SSW
5
1.2
W
4
0.3
S
10
0.6
S
3
1.6
S
6
2.1
S
6
2.5
S
7
1.2
S
11
1.3
SW
6
0.7
SW
5
0.3
S
10
0.9
S
5
0.5
S
8
0.3
S
8
0.5
W
4
0.9
NW
4
0.6
WNW
3
0.6
SW
3
0.8
SSW
4
0.4
SW
4
0.4
WSW
4
0.6
NW
3
0.7
NNW
4
0.2
N
3
0.1
S
2
1.4
SSE
5
1.6
WNW
5
1
NW
4
0.3
WNW
3
0.2
NNE
2
0.5
N
3
0.8
NW
4
clear
part cloud
part cloud
part cloud
cloud
rain showers
part cloud
part cloud
part cloud
light rain
light rain
mod rain
clear
clear
cloud
light rain
light snow
part cloud
part cloud
clear
part cloud
cloud
cloud
part cloud
clear
part cloud
clear
clear
cloud
light snow
rain showers
clear
cloud
cloud
clear
clear
clear
some clouds
some clouds
some clouds
cloudy
rain shwrs
some clouds
some clouds
some clouds
light rain
light rain
mod rain
clear
clear
cloudy
light rain
light snow
some clouds
some clouds
clear
some clouds
cloudy
cloudy
some clouds
clear
some clouds
clear
clear
cloudy
light snow
rain shwrs
clear
cloudy
cloudy
clear
clear
 km/h
20
WNW
20
WSW
40
SW
45
SW
40
SW
45
WNW
10
WSW
25
SSW
40
S
50
S
55
SSE
35
W
40
WNW
25
WNW
15
SSW
25
SW
10
NW
15
NW
25
NNW
35
NW
20
W
30
SW
20
WSW
15
W
20
WNW
30
NNW
25
NNW
10
N
10
SSE
40
SSE
50
NW
35
NW
15
WNW
20
N
25
NNW
30
NW
 mm 
1
3
5
10
3
3
2
max°C
-6
-2
3
4
5
4
-3
2
8
10
11
11
-5
-3
0
3
1
1
-1
-1
-5
-1
2
0
0
1
-5
-10
-7
4
5
0
-3
-5
-4
-6
Moonrise
4:56
6:02
7:06
8:05
8:57
9:40
10:14
10:42
11:05
11:25
11:43
12:01
Moonset
2:10
2:39
3:15
4:02
4:57
6:01
7:10
8:20
9:31
10:42
11:54
Sunrise
7:58
8:00
8:00
8:00
8:02
8:02
8:03
8:03
8:03
8:03
8:03
8:04
Sunset
4:45
4:45
4:46
4:46
4:47
4:47
4:49
4:49
4:50
4:50
4:51
4:52
Today's sea temperature in Back Bay is
7.3° C
(Statistics for 16 Dec 1981-2005 – mean: 6.4 max: 7.8 min: 5.4°C)
Issued (local time): 7 am Tuesday 16 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest