Guam Sea Conditions and Tide Table

Guam 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 06:37 AM and sunset is at 05:57 PM.

Days 1–3 Weather Summary

Moderate rain (total 16mm), heaviest on Sat night. Warm air temperatures (max 28°C on Thu morning, min 27°C on Thu night). Mainly fresh winds.

Days 4–6 Weather Summary

Heavy rain (total 23mm), heaviest during Sun night. Warm air temperatures (max 28°C on Sun morning, min 27°C on Sun morning). Mainly fresh winds.

Days 7–9 Weather Summary

Moderate rain (total 13mm), heaviest on Thu night. Warm (max 28°C on Wed morning, min 27°C on Wed morning). Wind will be generally light.

Days 10–12 Weather Summary

Light rain (total 8mm), mostly falling on Sat afternoon. Warm (max 28°C on Sat morning, min 26°C on Mon night). Wind will be generally light.

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
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
8:02AM0.69m
5:35PM0.68m
8:40AM0.72m
6:07PM0.67m
9:16AM0.73m
6:39PM0.67m
9:52AM0.75m
7:11PM0.67m
10:27AM0.75m
7:45PM0.66m
11:01AM0.75m
8:24PM0.65m
11:33AM0.74m
9:09PM0.63m
12:04PM0.74m
10:06PM0.59m
12:34PM0.73m
11:19PM0.54m
1:04PM0.73m
00:53AM0.51m
1:35PM0.73m
2:44AM0.51m
2:10PM0.74m
4:32AM0.56m
Low Tide
12:52PM0.50m
1:05AM-0.08m
1:37PM0.52m
1:38AM-0.10m
2:17PM0.52m
2:12AM-0.12m
2:54PM0.53m
2:45AM-0.12m
3:31PM0.53m
3:19AM-0.12m
4:09PM0.52m
3:55AM-0.09m
4:53PM0.50m
4:32AM-0.05m
5:42PM0.45m
5:11AM0.02m
6:38PM0.38m
5:54AM0.11m
7:37PM0.29m
8:37PM0.18m
7:42AM0.33m
9:34PM0.06m
Wave
height (m) 
direction
period (s) 
1.6
E
7
1.5
E
7
1.6
E
7
1.4
E
7
1.3
E
7
1.4
ENE
11
1.5
ENE
11
1.5
ENE
8
1.8
ENE
8
2
ENE
8
2.1
ENE
9
2.2
ENE
9
2.4
ENE
10
2.5
ENE
11
2.5
ENE
11
2.5
ENE
11
2.2
ENE
11
1.9
ENE
10
1.7
ENE
10
1.5
ENE
10
1.3
ENE
11
1.2
NE
11
1.1
NE
12
0.9
ENE
11
0.9
NE
13
0.9
NE
13
0.8
NE
12
0.8
NE
12
0.8
NE
12
0.8
NE
12
0.8
NE
12
0.8
NE
12
0.8
NE
12
0.8
NE
12
0.8
NE
12
0.7
NE
12
clear
clear
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
part cloud
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
clear
rain showers
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
risk tstorm
risk tstorm
risk tstorm
risk tstorm
some clouds
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
risk tstorm
some clouds
some clouds
risk tstorm
some clouds
risk tstorm
risk tstorm
clear
risk tstorm
risk tstorm
some clouds
risk tstorm
risk tstorm
risk tstorm
clear
rain shwrs
risk tstorm
risk tstorm
clear
 km/h
30
E
25
ENE
30
ENE
25
E
25
ENE
25
ENE
30
E
30
ENE
30
ENE
35
ENE
35
ENE
35
E
35
E
35
E
30
E
30
ESE
20
ESE
20
ESE
25
SE
20
SE
15
S
10
S
10
SW
5
WSW
0
N
0
NW
5
ENE
10
ENE
10
ENE
10
ENE
15
ESE
10
ESE
5
E
15
E
10
E
10
ENE
 mm 
4
2
4
6
1
5
2
3
5
2
3
2
1
1
5
2
4
1
1
1
2
2
1
max°C
28
28
27
28
28
28
28
27
27
28
28
27
28
27
27
27
27
27
28
28
28
28
28
27
28
28
27
28
28
27
28
28
27
27
28
27
Moonrise
4:52
5:44
6:37
7:29
8:18
9:04
9:47
10:27
11:05
11:43
12:22
1:04
Moonset
4:21
5:10
6:02
6:56
7:50
8:43
9:35
10:26
11:16
12:08
1:01
Sunrise
6:37
6:37
6:37
6:37
6:39
6:39
6:39
6:39
6:41
6:41
6:41
6:41
Sunset
5:57
5:58
5:58
5:59
5:59
6:00
6:00
6:00
6:00
6:01
6:01
6:02
Today's sea temperature in Guam is
28.8° C
(Statistics for 18 Dec 1981-2005 – mean: 28.2 max: 28.9 min: 27.3°C)
Issued (local time): 9 am Thursday 18 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest