San Juan Surf Break

Lat Long: 29.12° N 13.57° W

San Juan 48 hour detailed Surf Forecast

Issued: 12 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's San Juan sea temperature is
22.9° C
0.8° 

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 (17 Aug):

  • Morning surf: Morning surf (17 Aug, local time) - 3.5ft (1.1m), 9s period with N swell.
  • Afternoon surf: Afternoon surf (17 Aug, local time) - 4ft (1.2m), 9s period with N swell.
  • Evening surf: Evening surf (17 Aug, local time) - 3.5ft (1.1m), 9s period with N swell.

The current surf forecast for San Juan at 8AM is: 1.1m 9s primary swell from a North direction and 0.7m 8s secondary swell from a North-northwest direction (forecast issued at 12:00am August 17). The wind direction is predicted to be onshore.

Time (WEST) & DateWave HeightWave Period
Morning (17 Aug)3.5ft (1.1m)9s
Afternoon (17 Aug)4ft (1.2m)9s
Evening (17 Aug)3.5ft (1.1m)9s

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


Short Range Forecast

Mostly dry. Warm (max 24°C on Mon morning, min 22°C on Sun night). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
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
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
1
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)
1.3
N
8
1
N
8
1.1
N
9
1.2
N
9
1.1
N
8
1.2
N
9
1.2
N
9
1.1
N
9
1.1
N
9
1.1
N
9
1.1
N
8
1
N
8
1
N
8
1
N
8
1
N
8
1
N
8
1.1
N
8
1
N
8
1
N
8
1
N
8
1
N
8
1
N
8
1
N
8
1
N
8
Wave Graph
Metric surfscale
Energy kJ
186
127
186
215
177
210
220
189
184
180
163
132
132
129
129
133
165
136
136
133
133
133
133
136
Wind (km/h)
15
N
10
N
10
N
20
NNE
20
N
20
NNE
15
NNE
10
N
10
N
15
N
10
N
15
N
15
N
10
N
10
N
20
N
20
N
15
N
15
N
15
N
15
NNE
20
N
20
NNW
15
NNW
Wind State
on
on
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
on
on
cross-on
on
on
cross-on
cross-on
cross-on
High Tide
5:11AM2.18m
5:27PM2.23m
5:49AM2.04m
6:07PM1.99m
6:30AM1.88m
6:53PM1.77m
Low Tide
11:00PM0.22m
11:09AM0.33m
11:35PM0.40m
11:49AM0.50m
00:11AM0.59m
12:34PM0.68m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
part cloud
part cloud
cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:22
7:24
7:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:31
8:30
8:30
 mm
Temp °C
22
22
23
23
24
24
23
22
22
22
22
23
23
24
24
23
22
22
22
23
23
24
24
23
Feels °C
23
24
24
22
23
23
22
23
24
23
23
24
23
26
26
22
23
24
24
24
24
24
25
24
  • 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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