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 09:25 AM and sunset is at 05:17 PM.

Days 1–3 Weather Summary

Light rain (total 4mm), mostly falling on Sun night. Low air temperatures (max 6°C on Mon night, min 3°C on Sat night). Winds decreasing (near gales from the SW on Sat night, light winds from the WSW by Sun night).

Days 4–6 Weather Summary

Mostly dry. Low air temperatures (max 6°C on Wed afternoon, min 1°C on Thu night). Mainly near gales.

Days 7–9 Weather Summary

Mostly dry. Freeze-thaw conditions (max 5°C on Sat night, min 0°C on Fri morning). Mainly strong winds.

Days 10–12 Weather Summary

Some drizzle, heaviest during Wed afternoon. Mild temperatures (max 6°C on Tue night, min 2°C on Mon afternoon). Winds increasing (light winds from the W on Mon night, near gales from the N by Wed afternoon).

Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wednesday
30
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
1:11PM2.44m
2:17AM2.06m
2:10PM2.43m
3:38AM2.06m
3:14PM2.43m
4:52AM2.13m
4:20PM2.46m
5:56AM2.22m
5:21PM2.51m
6:50AM2.31m
6:17PM2.56m
7:37AM2.38m
7:08PM2.60m
8:20AM2.42m
7:55PM2.61m
9:00AM2.44m
8:40PM2.57m
9:37AM2.42m
9:23PM2.51m
10:12AM2.38m
10:07PM2.41m
10:45AM2.33m
10:52PM2.29m
Low Tide
6:49AM1.01m
7:57PM0.73m
7:53AM1.15m
9:06PM0.65m
9:05AM1.24m
10:15PM0.56m
10:19AM1.25m
11:17PM0.46m
11:25AM1.22m
00:13AM0.37m
12:23PM1.15m
1:04AM0.31m
1:14PM1.08m
1:50AM0.29m
2:01PM1.02m
2:32AM0.32m
2:44PM0.98m
3:12AM0.40m
3:26PM0.95m
3:51AM0.52m
4:06PM0.93m
4:28AM0.68m
4:48PM0.92m
5:04AM0.87m
Wave
height (m) 
direction
period (s) 
1.3
ESE
9.0
1.4
SSE
9.0
2.2
WSW
8.0
1.7
SSW
8.0
1.6
SW
8.0
1.5
SSE
9.0
1.5
ESE
10.0
2.1
SE
10.0
2
S
10.0
2.1
S
12.0
2.5
SSW
13.0
2.5
SSW
14.0
3
S
18.0
2.5
S
16.0
2.4
SSW
14.0
2.1
SSW
12.0
2.4
WSW
9.0
2.3
N
10.0
2.5
NNE
11.0
2.4
SE
11.0
2
SE
10.0
1.8
NNE
11.0
1.5
N
10.0
1.6
NNE
10.0
1.6
S
6.0
1.8
S
9.0
1.5
S
11.0
1.3
ESE
12.0
1.2
E
12.0
1.2
E
11.0
1
E
11.0
1
E
11.0
1
ENE
10.0
1.5
N
6.0
2
N
7.0
2.5
N
8.0
rain showers
part cloud
part cloud
cloud
cloud
rain showers
part cloud
clear
rain showers
cloud
cloud
part cloud
clear
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
clear
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
cloud
light rain
cloud
rain shwrs
some clouds
some clouds
cloudy
cloudy
rain shwrs
some clouds
clear
rain shwrs
cloudy
cloudy
some clouds
clear
some clouds
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
cloudy
clear
some clouds
some clouds
some clouds
cloudy
some clouds
clear
clear
some clouds
some clouds
some clouds
cloudy
light rain
cloudy
 km/h
30
WNW
25
W
50
SW
35
W
40
WSW
15
WSW
25
NW
45
WNW
30
W
20
W
55
WNW
55
WNW
60
WNW
50
NW
55
NW
50
SW
40
SSW
40
SSE
40
SSE
35
SSE
35
SSE
30
S
25
SSW
40
SSW
35
SSW
40
SSW
30
SW
25
W
15
W
15
W
25
WNW
25
NW
30
NNW
40
N
45
N
45
N
 mm 
1
2
1
1
max°C
4
5
4
5
5
4
5
5
6
5
5
5
5
6
5
3
2
1
0
2
2
3
4
5
5
5
5
4
3
3
4
5
6
5
5
6
Moonrise
4:10
5:48
7:19
8:33
9:22
9:52
10:09
10:21
10:30
10:36
10:43
10:49
Moonset
12:06
12:28
1:05
2:03
3:24
4:56
6:28
7:56
9:18
10:37
11:53
Sunrise
9:25
9:22
9:22
9:21
9:18
9:18
9:15
9:15
9:12
9:11
9:10
9:07
Sunset
5:17
5:20
5:21
5:22
5:23
5:25
5:27
5:29
5:30
5:31
5:34
5:35
Today's sea temperature in San Juan is 7.5 °C (Statistics for 19 Jul 1981-2005 – mean: 5.3 max: 6.3 min: 4.2°C)
Issued (local time): 8 am Saturday 19 Jul 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
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