San Juan Surf Break

Lat Long: 29.12° N 13.57° W

San Juan 48 hour detailed Surf Forecast

Issued: 6 am 16 Sep 2026 (local time)

Forecast update in  hr  min

Today's San Juan sea temperature is
23.8°C
1.0° 

San Juan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at San Juan today (16 Sep):

  • Morning surf: Morning surf (16 Sep, local time) - 3.5ft (1.1m), 6s period with NE swell.
  • Afternoon surf: Afternoon surf (16 Sep, local time) - 4.5ft (1.4m), 7s period with NE swell.
  • Evening surf: Evening surf (16 Sep, local time) - 5.5ft (1.7m), 7s period with NNE swell.

The current surf forecast for San Juan at 1PM is: 1.3m 7s primary swell from a Northeast direction and 0.3m 9s secondary swell from a North-northwest direction, 0.3m 11s secondary swell from a Northwest direction (forecast issued at 06:00am September 16). The wind direction is predicted to be onshore.

Time (WEST) & DateWave HeightWave Period
Morning (16 Sep)3.5ft (1.1m)6s
Afternoon (16 Sep)4.5ft (1.4m)7s
Evening (16 Sep)5.5ft (1.7m)7s

Table - waves today at San Juan. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 24°C on Wed morning, min 21°C on Wed night). Mainly strong winds.

Wednesday
16
Thursday
17
Friday
18
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
NNE
5
0.9
NNE
6
1.1
NE
7
1.3
NE
7
1.4
NE
7
1.6
NE
7
1.8
NNE
7
1.9
NNE
7
2.1
NNE
7
2.1
NNE
8
2.1
NNE
8
2.1
NNE
8
2.1
NNE
8
2
N
8
2.1
N
8
2.1
N
9
2.1
N
10
2
N
10
2
N
10
1.9
N
10
1.9
N
10
1.9
N
10
1.9
N
10
Wave Graph
Metric surfscale
Energy kJ
41
56
100
149
168
214
306
355
444
495
494
520
533
535
617
683
813
745
761
701
687
654
641
Wind (km/h)
15
N
20
N
25
N
25
NNE
30
N
30
NNE
30
NNE
35
NNE
40
N
40
NNE
35
NNE
30
N
35
N
35
N
35
N
30
N
25
N
25
N
25
N
25
N
30
N
30
N
30
N
Wind State
cross-on
cross-on
on
on
on
on
on
on
on
on
on
on
on
cross-on
on
on
cross-on
cross-on
on
on
on
on
on
High Tide
5:24PM1.93m
5:41AM1.91m
6:06PM1.72m
6:28AM1.74m
7:06PM1.54m
Low Tide
11:09AM0.48m
11:22PM0.60m
11:50AM0.66m
00:01AM0.78m
12:45PM0.84m
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:39
7:39
7:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:58
7:57
7:55
 mm
Temp °C
24
23
23
24
23
22
21
21
21
21
21
22
22
22
21
21
21
21
22
23
23
22
22
Feels °C
24
23
22
23
21
20
19
17
17
16
16
19
18
17
16
17
18
18
19
20
20
18
19
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our San Juan surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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