Playa de San Juan Surf Break

Lat Long: 43.60° N 5.94° W

Playa de San Juan Surf Forecast and Surf Report

Issued: 1 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Playa de San Juan sea temperature is
20.6°C
0.7° 

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


Playa de San Juan surf forecast from 26 Aug 2026:

  • Best quality surf: Saturday 29 Aug, 2AM (local time) - 6ft (1.9m), 9s period, NW swell with cross-offshore winds.
  • Most powerful swell: Friday 28 Aug, 8PM (local time) - 7.5ft (2.3m), 10s period, NW swell with 1,013 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 5AM (local time) - 3ft (0.9m), 7s period with WNW swell.

Best Forecast Surf Conditions for Playa de San Juan this week:

The surf forecast for Playa de San Juan over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 5AM. The primary swell is predicted to be 0.9m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Playa de San Juan in the next 16 days are 2.3m 10s and forecast to arrive on Friday (Aug 28) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Thursday (Aug 27) at 5PM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 27th Aug)3ft (0.9m) 7s
Best Surf 2AM (Sat 29th Aug)6ft (1.9m) 9s
Most Powerful 8PM (Fri 28th Aug)7.5ft (2.3m) 10s

Table - best surf conditions forecast for Playa de San Juan over the next 16 days.


The Lowdown

Alright, Rusty here. Let's talk about what's brewing for Playa de San Juan and the Espartal stretch.

Right now, the surf is sleepy. The first few days are nothing to write home about, but from Friday, August 28th onward, we start to see some life. The real golden window lands on the weekend, with Sunday the 30th being the absolute cream of the crop.

Let's break it down.

The water is 69°, which is about average for this time of year, so no drama there. The early sessions are small and flat. Wednesday morning (August 26th) has just a 0.4m NW swell with a 9-second period and weak energy (35), but there's a light cross-off wind from the South, so it's clean. Still, barely worth strapping in. That afternoon goes onshore and ugly.

Thursday morning (August 27th) gets a little better at 0.8m with an 8-second period and moderate energy (73), but it's still very average. The wind is cross-off from the ESE, so it's clean, but the waves are just forgettable. Friday morning (August 28th) is the first real turn: 1.8m of WNW swell with an 8-second period and moderate energy (384). The wind is a light cross-off from the SSW, so it'll be clean and have some power. That's when the stoke starts building.

Now for the absolute standout. Sunday morning, August 30th, is the one. We've got a solid 1.8m NW groundswell with an 11-second period and strong energy (703). And the wind? Dead flat. Glassy as a lake. This is pristine, powerful, and well-shaped surf at Playa de San Juan. For a beach/jetty spot, that longer period means the waves will stand up nicely, and with zero wind, it's going to be perfect. This is a morning to clear your schedule.

Monday morning (August 31st) is also a belter: 1.7m NW swell, 9-second period, strong energy (461), and flat calm conditions again. Another stellar dawn patrol. The afternoons around this time get a bit of sea breeze, so mornings are the play.

Tuesday (September 1st) drops back to a 0.9m WNW swell with moderate energy (220), but with clean cross-off winds, it's still good fun for a beginner-friendly wave. That run of consistent, clean mornings carries through the first week of September, with several days offering 1.1m to 1.4m NW swells and light easterly winds.

The second week is more modest. A couple of mornings around September 6th and 7th still show 1.1m to 1.4m NW swells with 10 to 11-second periods and moderate energy (305 to 338), with clean conditions. It's worth a look, but nowhere near that standout Sunday. After September 8th, the swell fades into 0.7m to 0.9m with short periods (8 seconds) and weak to moderate energy (under 130). Fine for a longboard or a foiler, but the juice is gone.

Overall, Playa de San Juan is consistent and offers a solid run of dawn patrols. The no-brainer sessions are that glassy Sunday the 30th and Monday the 31st of August. Be there. Crowds? This spot is often packed, and you can see why. For a beginner-friendly, exposed beach break that loves NW swell, it delivers when the conditions line up.

Rusty.

Short Range Forecast

Moderate rain (total 13mm), heaviest on Thu afternoon. Warm (max 23°C on Wed afternoon, min 13°C on Fri morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 25°C on Sun afternoon, min 15°C on Sat morning). Wind will be generally light.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
1
0
0
2
0
3
2
2
2
3
0
2
2
2
2
2
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
NW
9
0.4
NW
8
1
WNW
7
0.8
WNW
8
0.8
WNW
8
1.1
W
5
1.8
WNW
8
2.1
WNW
10
1.9
NW
9
1.3
NW
8
1.3
NW
8
1.4
NW
8
1.8
NW
11
1.5
NW
10
1.9
NW
9
1.7
NW
9
1.6
NW
9
1.3
WNW
10
0.9
WNW
9
0.8
WNW
9
1
NW
9
Wave Graph
Metric surfscale
Energy kJ
21
21
114
69
82
55
384
766
567
221
201
281
703
425
586
461
396
307
148
103
142
Wind (km/h)
5
SSE
5
NW
10
W
10
ESE
15
WSW
15
WSW
10
SSW
20
W
10
SSW
0
SSW
10
NE
5
S
5
WNW
20
NW
10
WNW
5
WNW
10
NNE
0
SE
5
E
15
ENE
5
ESE
Wind State
cross-off
on
cross-on
cross-off
cross-on
cross
cross-off
cross-on
cross-off
glassy
cross-off
cross-off
glassy
on
cross-on
glassy
cross-on
glassy
cross-off
cross-off
cross-off
High Tide
4:31PM3.63m
4:51AM3.47m
5:04PM3.82m
5:22AM3.63m
5:36PM3.96m
5:52AM3.74m
6:07PM4.03m
6:24AM3.80m
6:40PM4.04m
6:56AM3.81m
7:13PM3.96m
7:32AM3.74m
7:50PM3.81m
Low Tide
10:19AM1.01m
10:47PM0.82m
10:52AM0.81m
11:18PM0.67m
11:24AM0.65m
11:49PM0.56m
11:55AM0.54m
00:20AM0.50m
12:28PM0.49m
00:52AM0.50m
1:01PM0.52m
1:25AM0.57m
1:38PM0.63m
2:02AM0.72m
cloud
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
clear
part cloud
clear
clear
clear
clear
part cloud
clear
cloud
cloud
part cloud
part cloud
cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:39
7:41
7:41
7:43
7:43
7:45
7:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:09
9:07
9:07
9:05
9:02
9:01
9:00
 mm
2
2
2
4
3
Temp °C
20
23
19
19
22
17
18
23
22
20
23
21
21
25
20
19
21
20
20
22
20
Feels °C
21
22
20
18
20
16
16
20
20
20
22
21
22
25
19
20
21
20
21
22
20
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Playa de San Juan Surf forecast

The above surf forecast table for Playa de San Juan provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Playa de San Juan can be found by selecting the local surf guide option on the grey menu. Our Playa de San Juan surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Playa de San Juan) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Playa de San Juan may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Playa de San Juan is 5 km (3 miles) from Aviles. If you plan a holiday in Asturias, look for hotels and other accommodation in Aviles. Aviles has rooms for a wide range of budgets as well as car hire and transport links.

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