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 06:20 AM and sunset is at 06:55 PM.

Days 1–3 Weather Summary

A light covering of new snow, mostly falling on Tue afternoon. Becoming milder with light rain (total 8mm) on Tue night. Icy conditions (max 9°C on Mon night, min -1°C on Sun morning). Winds decreasing (strong winds from the SW on Mon morning, light winds from the WSW by Tue night).

Days 4–6 Weather Summary

Light rain (total 3mm) on Wed morning. Becoming colder with heavy fall of snow, heaviest during Fri afternoon. Icy conditions (max 10°C on Wed afternoon, min -4°C on Fri night). Winds increasing (light winds from the NNW on Wed afternoon, strong winds from the ENE by Fri afternoon).

Days 7–9 Weather Summary

Heavy rain (total 47mm), heaviest during Mon night. Freeze-thaw conditions (max 7°C on Sun night, min -6°C on Sat morning). Mainly fresh winds.

Days 10–12 Weather Summary

A dusting of new snow. Freeze-thaw conditions (max 5°C on Tue afternoon, min -6°C on Thu night). Mainly fresh winds.

Sunday
29
Monday
30
Tuesday
31
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sunday
12
Mon
13
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
8:45AM3.29m
9:24PM3.13m
9:42AM3.36m
10:13PM3.28m
10:33AM3.40m
10:56PM3.38m
11:17AM3.39m
11:35PM3.43m
11:59AM3.34m
00:11AM3.44m
12:38PM3.25m
00:46AM3.40m
1:15PM3.14m
1:20AM3.33m
1:54PM3.01m
1:56AM3.24m
2:33PM2.88m
2:36AM3.14m
3:16PM2.75m
3:19AM3.03m
4:04PM2.63m
4:08AM2.94m
4:57PM2.55m
5:04AM2.87m
5:55PM2.54m
6:03AM2.85m
6:53PM2.60m
7:03AM2.90m
7:47PM2.74m
Low Tide
3:17PM0.01m
3:36AM0.14m
4:08PM-0.05m
4:28AM0.00m
4:53PM-0.07m
5:14AM-0.10m
5:33PM-0.04m
5:56AM-0.14m
6:11PM0.03m
6:36AM-0.13m
6:46PM0.13m
7:13AM-0.08m
7:21PM0.24m
7:51AM0.01m
7:57PM0.37m
8:30AM0.12m
8:35PM0.49m
9:12AM0.25m
9:17PM0.61m
9:58AM0.38m
10:04PM0.70m
10:49AM0.48m
10:57PM0.77m
11:46AM0.54m
11:56PM0.78m
12:45PM0.53m
00:58AM0.72m
1:40PM0.45m
Wave
height (m) 
direction
period (s) 
0.6
SW
3
1.1
SW
4
1.2
SSW
5
1.9
SSW
6
1.6
SSW
6
1.1
S
9
0.8
S
8
0.9
SSE
5
0.9
SSE
6
1.2
S
9
1.4
S
9
1
S
9
0.8
S
8
0.8
S
8
1
E
4
1.5
ESE
6
1.8
E
6
1.3
E
6
0.8
ESE
6
0.6
SE
4
0.6
SSE
4
0.8
SSE
4
0.9
SSE
5
1.4
S
6
1
S
7
0.8
S
7
0.8
S
7
1.2
SSE
8
1.2
SSE
9
1.1
S
10
1.2
S
10
1.2
SSW
6
0.9
SSW
6
0.7
SSW
5
0.7
S
5
0.6
NNW
3
0.5
S
6
0.3
SSE
10
0.3
SSE
9
0.2
SSE
9
0.4
SSW
4
1.1
SSW
4
1.2
SSW
5
0.8
S
6
0.6
S
6
0.6
SSE
6
0.6
SSE
6
clear
part cloud
part cloud
cloud
part cloud
part cloud
cloud
light snow
light snow
light rain
cloud
cloud
light snow
light snow
mod snow
light snow
mod snow
light snow
cloud
cloud
cloud
cloud
light rain
cloud
light rain
heavy rain
heavy rain
light snow
cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
clear
clear
part cloud
part cloud
clear
clear
snow showers
light snow
cloud
light rain
mod rain
cloud
clear
some clouds
some clouds
cloudy
some clouds
some clouds
cloudy
light snow
light snow
light rain
cloudy
cloudy
light snow
light snow
mod snow
light snow
mod snow
light snow
cloudy
cloudy
cloudy
cloudy
light rain
cloudy
light rain
heavy rain
heavy rain
light snow
cloudy
some clouds
some clouds
some clouds
clear
some clouds
cloudy
clear
clear
some clouds
some clouds
clear
clear
snow shwrs
light snow
cloudy
light rain
mod rain
cloudy
 km/h
30
SW
35
SW
30
SW
45
SW
35
SW
15
NNW
20
E
25
E
10
E
15
SW
5
NNW
10
NNE
15
NE
20
ENE
30
E
40
E
50
ENE
35
NE
25
NE
20
E
25
SSE
25
S
25
SSW
35
SSW
10
NNW
15
NNE
25
NNE
35
NNW
25
WNW
20
SW
25
WNW
40
WNW
30
NW
30
NW
30
NNW
30
NNW
15
N
10
W
5
W
15
SSW
20
SSW
35
SSW
25
SSW
5
NNE
5
ENE
15
SSW
15
WNW
 mm 
8
3
1
3
11
32
1
1
10
max°C
0
2
4
5
8
9
2
0
3
5
10
10
-2
-2
-1
-2
-3
-2
-4
-2
-1
1
5
7
6
5
3
2
5
3
4
4
0
-3
-1
-3
-2
3
1
1
2
1
3
4
4
5
13
Moonrise
3:25
4:36
5:46
6:53
8:01
9:08
10:16
11:21
12:23
1:19
2:06
2:45
3:16
3:42
4:04
Moonset
4:52
5:13
5:32
5:50
6:08
6:27
6:50
7:17
7:50
8:32
9:22
10:20
11:25
12:33
1:44
2:55
Sunrise
6:20
6:18
6:16
6:15
6:13
6:11
6:09
6:07
6:05
6:03
6:01
6:00
5:58
5:56
5:54
5:52
Sunset
6:55
6:57
6:58
6:59
7:00
7:01
7:02
7:04
7:05
7:07
7:07
7:08
7:09
7:12
7:13
7:14
Today's sea temperature in Southwest Harbor is
3.1° C
(Statistics for 29 Mar 1981-2005 – mean: 3.5 max: 5.1 min: 2.1°C)
Issued (local time): 7 am Sunday 29 Mar 2026
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest