San Juan Surf Break

Lat Long: 29.12° N 13.57° W

San Juan Surf Forecast and Surf Report

Issued: 6 am 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's San Juan sea temperature is
22.9° C
1.0° 

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


San Juan surf forecast from 5 Aug 2026:

  • Most powerful swell: Thursday 6 Aug, 1PM (local time) - 8ft (2.4m), 8s period, NE swell with 767 kJ wave energy.

Best Forecast Surf Conditions for San Juan this week:

The most powerful waves expected at San Juan in the next 16 days are 2.4m 8s and forecast to arrive on Thursday (Aug 06) at 1PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1PM (Thu 6th Aug)8ft (2.4m) 8s

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


The Lowdown

Alright, Rusty here. Let’s talk about your local surf.

Honestly, for the next 16 days, it’s going to be a tough run. The swell is around, but the wind just won’t play ball. We’re looking at a solid wall of onshore wind from the NNE and N for almost the entire stretch, which is going to wreck the surface. The water temp is sitting at 73°, which is about average for this time of year, but that doesn't help much when the wind is howling.

The period we’re dealing with is short, mostly around 8 seconds, and dropping to 7 seconds in the middle of the second week. That’s short-period wind swell, not the kind of groundswell that gives you a nice, long wall. It’s going to be lumpy, choppy, and messy.

The real problem is the consistency of the onshore wind. It’s a fresh breeze almost every day, pushing 18 to 22 mph, and even hitting 25 mph by the 19th. With that wind direction, San Juan is completely exposed, and the wave comment is “poor surf conditions” across the board.

There is energy in the water – the combined swell energy hits moderate values, peaking at 819 on the morning of the 6th and staying in the 400-600 range for a lot of the first week. But with the wind on it, that energy just means big, messy, blown-out lines. The swell height sits around 6 ft to 8 ft for the first week, which is a solid size, but with that onshore wind, it’s not going to be surfable. It’s too big for beginners anyway, and with the wind, it’s not even fun for experts.

From the 10th onwards, the swell drops back a little, staying between 4 ft and 6 ft, but the wind stays howling onshore. The period drops to just 7 seconds, making it even weaker and more gutless.

About the only highlight, and I use that term loosely, is that the wind does back off a little on the 17th and 18th, with a moderate breeze instead of a fresh one. The swell is smaller, only 4 ft to 4 ft, and the period is a better 8 seconds again. But it’s still an onshore wind, and it’s still going to be choppy. The 17th afternoon has a cross-onshore wind, which is a tiny bit better, but the comment is still “moderate cross-onshore and choppy”.

Between the 17th and the 20th, the swell keeps fading. By the 19th, we’re down to 3 ft with a strong breeze from the north. That’s not surf, that’s just whitecaps.

There are no standouts here. The entire 16-day window is a write-off for quality waves at San Juan. With that much consistent onshore wind and short-period swell, this setup honestly looks more interesting for kite surfing than paddle surfing. It’s a reef break that takes a lot of swell, but without the clean conditions, it’s not going to be any good.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 23°C on Wed afternoon, min 21°C on Wed night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Sat morning, min 20°C on Sun night). Mainly fresh winds.

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
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
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
Wave
Height (m)
Direction
Period (s)
2
NE
8
1.9
NE
8
2.2
NE
7
2.4
NE
8
2.1
NNE
8
2.2
NNE
7
2.2
NNE
8
2.1
NNE
8
2.2
NNE
8
2.2
NNE
8
2.1
NNE
8
2.1
NNE
8
2
NNE
8
1.9
NNE
8
1.9
NNE
7
1.7
NNE
7
1.7
NNE
7
1.7
NNE
7
1.7
NNE
7
1.6
NNE
7
1.7
NNE
6
Wave Graph
Metric surfscale
Energy kJ
435
407
515
767
558
498
582
549
540
650
507
469
452
397
366
319
278
247
262
247
233
Wind (km/h)
35
NNE
35
NNE
35
NNE
35
NNE
35
N
35
N
35
N
30
N
35
N
35
N
35
N
30
N
35
NNE
35
N
30
N
30
NNE
35
N
30
NNE
30
NNE
35
N
30
NNE
Wind State
on
on
on
on
on
on
on
cross-on
on
on
cross-on
on
on
on
on
on
on
on
on
on
on
High Tide
6:50PM2.01m
7:28AM1.89m
7:59PM1.87m
8:45AM1.84m
9:27PM1.81m
10:13AM1.88m
10:57PM1.87m
11:31AM2.04m
00:09AM2.01m
12:32PM2.25m
1:06AM2.17m
1:24PM2.45m
1:55AM2.31m
Low Tide
12:30PM0.55m
1:05AM0.54m
1:34PM0.66m
2:15AM0.65m
3:01PM0.71m
3:43AM0.69m
4:36PM0.63m
5:08AM0.61m
5:54PM0.45m
6:15AM0.46m
6:54PM0.25m
7:08AM0.30m
7:44PM0.08m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:16
7:16
7:16
7:18
7:18
7:18
7:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:43
8:42
8:40
8:40
8:39
8:38
8:37
 mm
Temp °C
22
23
22
22
23
21
22
23
21
23
23
21
22
22
21
21
22
21
21
22
21
Feels °C
20
20
19
20
21
18
19
21
18
20
20
18
19
20
19
18
19
18
18
19
19
  • 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 San Juan Surf forecast

The above surf forecast table for 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 San Juan can be found by selecting the local surf guide option on the grey menu. Our 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 (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 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.

San Juan is 8 km (5 miles) from Teguise. If you plan a holiday in Lanzarote, look for hotels and other accommodation in Teguise. Teguise has rooms for a wide range of budgets as well as car hire and transport links.

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