San Juan Surf Break

Lat Long: 29.12° N 13.57° W

San Juan 48 hour detailed Surf Forecast

Issued: 6 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's San Juan sea temperature is
23.9°C
1.2° 

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 (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 4.5ft (1.3m), 8s period with N swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 2.5ft (0.7m), 14s period with NNW swell.
  • Evening surf: Evening surf (20 Sep, local time) - 2.5ft (0.7m), 13s period with NNW swell.

The current surf forecast for San Juan at 12PM is: 0.7m 14s primary swell from a North-northwest direction and 1.2m 8s secondary swell from a North direction (forecast issued at 06:00am September 20). The wind direction is predicted to be onshore.

Time (WEST) & DateWave HeightWave Period
Morning (20 Sep)4.5ft (1.3m)8s
Afternoon (20 Sep)2.5ft (0.7m)14s
Evening (20 Sep)2.5ft (0.7m)13s

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


Short Range Forecast

Mostly dry. Warm (max 25°C on Tue morning, min 21°C on Sun night). Wind will be generally light.

Sunday
20
Monday
21
Tuesday
22
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)
1
0
1
1
1
1
1
0
0
1
1
1
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)
1.5
N
8
0.7
NNW
15
0.7
NNW
14
0.7
NNW
14
0.7
NNW
14
0.7
NNW
13
0.7
NNW
13
0.7
NNW
13
0.7
NNW
12
0.8
NNW
12
0.9
NNW
12
0.9
NNW
12
1
NNW
11
0.9
NNW
11
0.9
NNW
11
1
N
11
0.9
NNW
10
0.8
NNW
10
0.8
NNW
10
0.7
NNW
12
0.7
NNW
12
0.7
NNW
12
0.4
NNW
14
Wave Graph
Metric surfscale
Energy kJ
319
234
215
207
189
184
178
173
160
195
203
199
268
198
194
238
184
136
133
136
131
125
73
Wind (km/h)
15
NNE
10
NNE
10
NNE
10
NE
10
NE
5
N
10
N
10
N
10
NNE
10
NE
5
NE
5
N
15
N
15
N
15
N
15
NNE
10
N
15
NNW
15
N
15
N
20
N
20
N
20
N
Wind State
on
on
on
cross-on
on
on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
on
cross-on
on
on
cross-on
cross-on
on
on
cross-on
on
High Tide
9:39AM1.60m
10:39PM1.53m
11:01AM1.74m
11:38PM1.69m
11:50AM1.92m
Low Tide
2:52AM1.02m
4:23PM0.92m
4:38AM0.93m
5:29PM0.77m
5:35AM0.77m
6:10PM0.59m
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:41
7:41
7:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:53
7:52
7:51
 mm
Temp °C
22
22
22
22
22
22
22
22
21
21
22
23
24
24
23
22
22
23
24
25
25
23
23
Feels °C
23
23
24
24
24
24
24
24
22
23
24
25
24
24
23
22
23
24
24
24
24
22
23
  • 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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