Surf Forecasts:
San Juan surf forecast from 30 Jul 2026:
- Most powerful swell: Wednesday 5 Aug, 10AM (local time) - 7ft (2.1m), 7s period, NE swell with 492 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 2.1m 7s and forecast to arrive on Wednesday (Aug 05) at 10AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Wed 5th Aug) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for San Juan over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get straight into it.
Honestly, the next couple of weeks are looking grim. The entire 16-day window is a dud for San Juan. Every session comes back as “poor surf conditions,” so don’t bother waxing up just yet.
We’ve got consistent swell running from July 29 right through to August 13, with wave heights mostly sitting between 5 ft and 8 ft, and dominant periods hanging around 6-8 seconds. That’s short-period, wind-driven slop, not the clean groundswell we’d want. The combined energy values climb from a moderate 204 up to a chunky 815 on August 5, but none of it matters because the wind is absolutely wrecking things. Almost the entire run has onshore or cross-onshore winds from the NNE, N, or NNW, blowing between 16 mph and 25 mph. That’s fresh to strong breeze territory – lumpy, choppy, blown-out mess.
There’s no standout session. No clean window. No glassy morning. The water temp is sitting at 73°, which is a touch warmer than normal for this time of year, but you won’t be feeling that with all that wind in your face.
San Juan is a reef break that needs an offshore from the NNW, and what are we getting? Almost constant onshore northerlies. It’s a heartbreaking mismatch. With swell over 5 ft pretty often and this much wind, this is expert territory at best, and for 90% of us, it’s a total write-off. Honestly, with the wind and the swell size, this setup looks more interesting for kite surfing than paddle surfing.
Bottom line: There’s nothing on the table for the next 16 days. A blank run like this is just the way it goes sometimes. Forecasts can change, but right now, stay home.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Sat morning, min 20°C on Wed night). Winds decreasing (fresh winds from the NNE on Thu afternoon, light winds from the NNW by Sat morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Sun morning, min 22°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NNE 7 | NNE 7 | NE 8 | NE 7 | NE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 366 | 299 | 315 | 215 | 286 | 229 | 173 | 145 | 141 | 247 | 358 | 408 | 397 | 355 | 440 | 349 | 315 | 363 | 407 | 331 | 276 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 3:06PM2.38m | 3:24AM2.17m | 3:37PM2.42m | 3:56AM2.19m | 4:09PM2.41m | 4:29AM2.18m | 4:42PM2.36m | 5:04AM2.14m | 5:18PM2.28m | 5:43AM2.07m | 5:59PM2.16m | 6:30AM1.98m | 6:50PM2.01m | ||||||||
Low Tide | 8:48AM0.30m | 9:18PM0.23m | 9:20AM0.26m | 9:49PM0.21m | 9:52AM0.26m | 10:21PM0.21m | 10:25AM0.29m | 10:54PM0.25m | 11:01AM0.36m | 11:30PM0.32m | 11:41AM0.44m | 00:13AM0.42m | 12:30PM0.55m | 1:05AM0.54m | |||||||
 |  |  | |  | | | | | | |  | | | | | | | | | | |
 | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — |
 | — | 8:46 | — | — | 8:46 | — | — | 8:45 | — | — | 8:45 | — | — | 8:45 | — | — | 8:44 | — | — | 8:43 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 21 | 22 | 23 | 22 | 25 | 24 | 22 | 24 | 24 | 23 | 24 | 24 | 22 | 23 | 23 | 22 | 23 | 23 | 22 |
Feels °C | 19 | 19 | 20 | 20 | 22 | 23 | 27 | 25 | 21 | 22 | 22 | 21 | 20 | 20 | 19 | 20 | 20 | 19 | 21 | 21 | 20 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 10 | N 7 | NW 11 | NNE 7 | NNE 7 | WNW 10 | WNW 9 | WNW 9 | WNW 8 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NNW 11 | N 11 | N 10 |
| kJ | 20 | 9 | 9 | 111 | 30 | 229 | 173 | 80 | 73 | 49 | 47 | 63 | 32 | 32 | 33 | 32 | 30 | 29 | 41 | 58 | 52 |
Swell 2 Height (m) Direction Period (s) | N 12 | N 12 | N 11 | WNW 9 | N 10 | WNW 10 | WNW 10 | N 9 | N 12 | N 11 | — | N 10 | NW 9 | NW 11 | W 10 | — | WNW 11 | N 11 | WNW 10 | WNW 9 | WNW 11 |
| kJ | 3 | 11 | 10 | 8 | 8 | 68 | 83 | 7 | 3 | 9 | — | 8 | 3 | 5 | 2 | — | 12 | 2 | 19 | 31 | 71 |
Swell 3 Height (m) Direction Period (s) | — | — | — | N 11 | — | N 10 | — | N 9 | — | N 9 | — | — | — | — | — | — | N 11 | — | NW 8 | WNW 11 | — |
| kJ | — | — | — | 9 | — | 7 | — | 7 | — | 2 | — | — | — | — | — | — | 2 | — | 16 | 24 | — |
Wind waves Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NE 7 | NNE 7 | — | — | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NNE 7 | NNE 7 | NE 8 | NE 7 | NE 7 |
| kJ | 366 | 299 | 315 | 215 | 286 | — | — | 145 | 141 | 247 | 358 | 408 | 397 | 355 | 440 | 349 | 315 | 363 | 407 | 331 | 276 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 334 | 331 | 259 | 259 | 231 | 38 | 10 | 16 | 231 | 330 | 259 | 330 | 38 | 259 | 38 | 259 | 259 | 259 | 38 | 330 | 38 |
Best forecast wave conditions in Lanzarote | |||||||||||||||||||||
Best forecast wave conditions in Spain (Africa) | |||||||||||||||||||||
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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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