Southwest Harbor Sea Conditions and Tide Table

Southwest 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 07:07 AM and sunset is at 03:59 PM.

Days 1–3 Weather Summary

A dusting of new snow. Air temperatures will be below freezing (max 0°C on Thu morning, min -12°C on Thu night). Winds increasing (light winds from the WSW on Wed night, strong winds from the NNW by Thu night).

Days 4–6 Weather Summary

Light rain (total 7mm), mostly falling on Mon afternoon. Icy conditions (max 7°C on Mon afternoon, min -8°C on Sat night). Winds increasing (calm on Sun night, strong winds from the W by Mon night).

Days 7–9 Weather Summary

A dusting of snow turning to light rain (total 6mm) on Thu afternoon. Freeze-thaw conditions (max 4°C on Thu night, min -12°C on Fri afternoon). Winds increasing (light winds from the W on Wed afternoon, strong winds from the NW by Fri morning).

Days 10–12 Weather Summary

Light rain (total 6mm), mostly falling on Sun night. Freeze-thaw conditions (max 4°C on Sun night, min -15°C on Fri night). Mainly strong winds.

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Mon
5
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
1:56PM3.16m
2:36AM2.97m
2:46PM3.11m
3:23AM3.06m
3:41PM3.04m
4:15AM3.17m
4:41PM2.98m
5:11AM3.29m
5:44PM2.96m
6:08AM3.44m
6:50PM2.98m
7:07AM3.58m
7:52PM3.01m
8:05AM3.67m
8:53PM3.09m
9:03AM3.79m
9:50PM3.18m
9:59AM3.86m
10:45PM3.25m
10:54AM3.86m
11:38PM3.28m
11:47AM3.79m
Low Tide
7:55AM0.40m
8:27PM0.08m
8:46AM0.36m
9:14PM0.10m
9:41AM0.30m
10:04PM0.13m
10:41AM0.21m
10:59PM0.15m
11:44AM0.09m
11:58PM0.16m
12:48PM-0.06m
00:57AM0.13m
1:50PM-0.23m
1:56AM0.11m
2:49PM-0.34m
2:55AM0.03m
3:46PM-0.46m
3:51AM-0.05m
4:40PM-0.52m
4:47AM-0.09m
5:32PM-0.52m
5:41AM-0.09m
6:23PM-0.46m
Wave
height (m) 
direction
period (s) 
0.6
SE
9
0.8
NNW
3
1.1
N
4
0.9
N
4
0.6
N
4
0.4
N
3
0.4
NNE
3
0.5
N
3
0.4
NNW
3
0.6
NW
3
0.6
NW
3
0.2
WNW
3
0.6
S
3
1.2
S
5
1.4
SW
5
1.3
SW
6
1.2
SW
6
1.1
W
4
0.6
SSW
5
0.4
SSW
5
0.8
SW
4
1.3
SSW
5
1.1
SSW
5
1.2
SSW
5
1.2
SSW
5
1.1
NW
4
0.8
NNW
4
0.4
SW
4
0.4
NW
3
0.5
NW
3
0.4
NW
3
0.1
S
6
0.7
SSW
4
1.2
SSW
5
0.7
S
7
snow showers
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
light rain
light rain
part cloud
cloud
part cloud
clear
clear
clear
part cloud
cloud
light snow
light rain
snow showers
clear
clear
part cloud
part cloud
clear
clear
part cloud
light rain
light rain
part cloud
snow shwrs
some clouds
clear
clear
clear
some clouds
some clouds
some clouds
clear
clear
clear
some clouds
light rain
light rain
some clouds
cloudy
some clouds
clear
clear
clear
some clouds
cloudy
light snow
light rain
snow shwrs
clear
clear
some clouds
some clouds
clear
clear
some clouds
light rain
light rain
some clouds
 km/h
25
W
40
NW
40
NNW
35
NNW
20
NNW
20
N
20
N
25
NNW
25
NW
30
NW
25
NW
10
NW
25
S
30
SSW
45
W
40
W
40
W
35
W
25
WNW
20
W
35
SW
35
WSW
30
SW
30
WSW
45
NW
40
NW
30
NW
15
NW
25
NW
25
NW
15
NW
5
WSW
25
SW
30
W
20
W
 mm 
2
5
2
4
4
2
max°C
0
-2
-8
-10
-9
-10
-7
-7
-5
-1
0
3
6
7
4
-5
-5
-7
-5
-4
2
3
2
4
-5
-10
-15
-12
-11
-12
-9
-5
4
3
2
Moonrise
10:29
10:48
11:07
11:27
11:51
12:21
1:00
1:52
2:59
4:16
5:38
6:58
Moonset
9:49
11:00
12:12
1:29
2:49
4:12
5:33
6:45
7:43
8:26
8:58
Sunrise
7:07
7:07
7:07
7:07
7:07
7:07
7:07
7:07
7:07
7:07
7:07
7:07
Sunset
3:59
4:00
4:00
4:00
4:01
4:02
4:02
4:05
4:05
4:06
4:07
4:07
Today's sea temperature in Southwest Harbor is
5.3° C
(Statistics for 25 Dec 1981-2005 – mean: 6.0 max: 6.9 min: 4.5°C)
Issued (local time): 12 am Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest