San Juan Sea Conditions and Tide Table

San Juan 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 — and sunset is at 09:53 PM.

Days 1–4 Weather Summary

Light rain (total 6mm), mostly falling on Fri afternoon. Low air temperatures (max 8°C on Thu night, min 4°C on Fri night). Winds increasing (light winds from the NE on Thu night, gales from the WSW by Sat morning).

Days 5–7 Weather Summary

Heavy rain (total 21mm), heaviest during Mon night. Low air temperatures (max 9°C on Mon afternoon, min 6°C on Sun night). Winds increasing (calm on Tue afternoon, severe gales from the SW by Wed morning).

Days 8–10 Weather Summary

Moderate rain (total 10mm), heaviest on Wed night. Mild temperatures (max 9°C on Sat afternoon, min 4°C on Sat morning). Winds increasing (light winds from the SW on Wed night, near gales from the SSW by Fri afternoon).

Days 11–13 Weather Summary

Light rain (total 9mm), mostly falling on Mon night. Mild temperatures (max 9°C on Sun night, min 6°C on Mon morning). Mainly severe gales.

Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
Tue
6
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
10:54PM2.27m
10:40AM2.28m
11:36PM2.30m
11:36AM2.18m
00:21AM2.33m
12:42PM2.09m
1:12AM2.36m
1:57PM2.05m
2:08AM2.40m
3:16PM2.07m
3:07AM2.46m
4:29PM2.14m
4:05AM2.50m
5:34PM2.24m
5:05AM2.58m
6:31PM2.35m
6:01AM2.65m
7:23PM2.43m
6:55AM2.70m
8:11PM2.49m
7:46AM2.71m
8:57PM2.52m
8:35AM2.67m
Low Tide
4:46AM1.09m
5:07PM0.72m
5:40AM1.05m
5:52PM0.83m
6:42AM0.98m
6:45PM0.95m
7:48AM0.87m
7:45PM1.06m
8:55AM0.74m
8:52PM1.14m
10:00AM0.58m
9:59PM1.19m
10:59AM0.44m
11:05PM1.16m
11:56AM0.31m
00:05AM1.11m
12:49PM0.21m
00:59AM1.05m
1:39PM0.16m
1:51AM1.00m
2:26PM0.17m
2:40AM0.96m
3:12PM0.23m
Wave
height (m) 
direction
period (s) 
1.4
NW
9
1.6
NW
8
1.7
W
8
2
SW
8
2.5
SSW
12
3
SSW
11
2.2
SSW
9
1.8
SSW
8
1.5
S
8
1.1
S
7
1.3
SSE
8
1.6
SE
11
1.6
SE
10
1.5
ESE
9
1.2
ESE
9
1.2
ESE
8
2.1
WSW
5
2.5
SW
9
1.1
ESE
9
1.9
SW
7
1.9
SW
8
2.3
SW
8
2.3
SSW
7
2.5
S
7
1.6
SSE
7
1.1
SSE
7
1.7
NNW
5
3.5
SSW
10
2.5
SSW
12
1.6
S
9
1
S
7
2.3
SW
7
1.9
SW
8
1.9
SW
9
1.8
SW
9
1.7
SW
8
cloud
light rain
light rain
light rain
rain showers
clear
clear
clear
clear
light rain
rain showers
cloud
rain showers
part cloud
part cloud
rain showers
light rain
part cloud
rain showers
part cloud
part cloud
rain showers
clear
clear
part cloud
light rain
light rain
part cloud
cloud
part cloud
cloud
clear
part cloud
rain showers
light rain
part cloud
cloudy
light rain
light rain
light rain
rain shwrs
clear
clear
clear
clear
light rain
rain shwrs
cloudy
rain shwrs
some clouds
some clouds
rain shwrs
light rain
some clouds
rain shwrs
some clouds
some clouds
rain shwrs
clear
clear
some clouds
light rain
light rain
some clouds
cloudy
some clouds
cloudy
clear
some clouds
rain shwrs
light rain
some clouds
 km/h
10
NNW
35
WNW
45
SW
55
WSW
65
WSW
60
SW
50
SW
45
SSW
35
SW
10
N
35
NNW
10
NW
15
SSW
40
SW
0
NNW
15
NNW
65
WSW
55
SW
15
WNW
50
SW
50
WSW
55
SW
50
SSW
60
SSW
30
S
20
NW
45
NW
80
SW
35
SW
5
W
25
SW
60
SW
50
SW
50
WSW
45
WSW
40
WSW
 mm 
1
2
2
1
1
2
10
4
4
2
2
2
4
7
2
max°C
8
8
5
5
5
5
5
6
6
7
8
9
9
7
7
9
7
7
8
6
6
5
5
5
6
6
9
8
7
8
9
7
7
7
7
8
Moonrise
12:01
1:26
2:54
4:27
6:05
7:44
9:11
10:13
10:50
11:12
11:26
Moonset
12:30
12:37
12:45
12:54
1:06
1:25
1:55
2:46
4:04
5:38
7:16
8:49
Sunrise
4:35
4:37
4:37
4:39
4:39
4:41
4:41
4:43
4:45
4:46
4:48
4:48
Sunset
9:53
9:53
9:53
9:53
9:53
9:53
9:53
9:53
9:53
9:52
9:52
9:52
9:52
Today's sea temperature in San Juan is
7.6° C
(Statistics for 25 Dec 1981-2005 – mean: 7.1 max: 8.3 min: 6.0°C)
Issued (local time): 8 pm Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest