Surf Forecasts:
San Juan surf forecast from 25 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 7AM (local time) - 8ft (2.5m), 8s period, NNE swell with 956 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 2.5m 8s and forecast to arrive on Sunday (Jul 26) at 7AM. 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 | 7AM (Sun 26th Jul) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for San Juan over the next 16 days.
The Lowdown
G’day, it’s Rusty. Let’s have a look at what’s cookin’ for San Juan.
Honestly, mate, it’s a rough run. The whole 16-day window is one long stretch of poor surf, no standout days, no hidden gems. Every single slot is marked with poor surf conditions. The wind is relentless, onshore every morning and afternoon, mostly from the NNE, with speeds ranging from 9 mph to 28 mph, which is a strong breeze pushing hard into the swell. The result is bumpy, messy, unsurfable conditions.
The swell hangs around the 5 ft to 8 ft range, but the period is short—mostly 6 to 8 seconds—so it’s weak, wind-driven slop with no real energy behind it. The combined swell energy starts at 919 (moderate) early on the 25th of July, drops to 201 (weak) by the 30th, then builds back up to 1197 (strong) by the 7th of August, but even that strong energy is wasted by the bad wind. For a reef break like San Juan, which is an expert-only wave, that close-out wind and short period makes it unsurfable for anyone.
The water temperature is about average for the time of year, so no real surprise there.
The few days where the wind eases a little—like the 2nd of August with a gentle breeze of 9 mph—still have onshore wind and no real wave quality. There’s no opportunity for clean surf. The only thing that might be interestin’ here is if you’re a kite surfer, because the combination of strong wind and onshore swell could give you some fun. But for paddle surfing? It’s a total write-off.
Don’t hold your breath. The trend is stubborn, and forecasts can change, but right now this is a long blank stretch. There’s nothing to pick, no best session, no highlight. Stay patient.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sat afternoon, min 19°C on Fri night). Mainly strong winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Thu afternoon, min 20°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | N 8 | N 8 | N 7 | N 7 | N 7 | N 7 | NNE 7 | NNE 7 | NNE 6 | NNE 7 | NNE 6 | NNE 6 | NNE 7 | NNE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 919 | 870 | 845 | 850 | 630 | 437 | 345 | 292 | 258 | 215 | 203 | 152 | 206 | 203 | 186 | 170 | 175 | 176 | 200 | 181 | 144 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | on | cross-on | on | on | cross-on | on | on | cross-on | on | on | cross-on | on |
High Tide | 11:53AM1.82m | 00:23AM1.76m | 12:42PM1.94m | 1:07AM1.86m | 1:23PM2.08m | 1:45AM1.97m | 2:00PM2.20m | 2:20AM2.06m | 2:33PM2.31m | 2:52AM2.13m | 3:06PM2.38m | 3:24AM2.17m | 3:37PM2.42m | 3:56AM2.19m | |||||||
Low Tide | 5:31AM0.79m | 6:13PM0.70m | 6:23AM0.69m | 6:59PM0.58m | 7:06AM0.57m | 7:38PM0.47m | 7:42AM0.46m | 8:13PM0.36m | 8:16AM0.37m | 8:46PM0.28m | 8:48AM0.30m | 9:18PM0.23m | 9:20AM0.26m | 9:49PM0.21m | |||||||
 | |  | | |  | | | | | | | | | |  | | | | | | |
 | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — |
 | — | 8:50 | — | — | 8:50 | — | — | 8:49 | — | — | 8:49 | — | — | 8:47 | — | — | 8:46 | — | — | 8:46 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 22 | 21 | 22 | 23 | 21 |
Feels °C | 15 | 16 | 16 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 19 | 19 | 20 | 21 | 21 | 21 | 22 | 19 |
Swell 1 Height (m) Direction Period (s) | — | W 8 | W 11 | NW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | N 12 | N 11 | NNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | NW 9 | NW 10 | NW 9 |
| kJ | — | 1 | 2 | 4 | 9 | 9 | 8 | 8 | 8 | 12 | 23 | 23 | 12 | 12 | 22 | 20 | 19 | 9 | 13 | 80 | 88 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | N 14 | WNW 8 | NW 8 | WNW 12 | N 12 | N 11 | N 11 | N 12 | N 12 | N 11 | N 11 | N 10 | N 10 |
| kJ | — | — | — | — | — | — | — | — | 4 | 7 | 3 | 14 | 11 | 20 | 9 | 11 | 11 | 10 | 9 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 13 | NW 12 | NW 8 | NW 8 | NW 8 | W 7 | — | — | — | WNW 11 | NW 8 | — |
| kJ | — | — | — | — | — | — | — | — | — | 3 | 6 | 3 | 3 | 3 | 1 | — | — | — | 12 | 3 | — |
Wind waves Height (m) Direction Period (s) | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | N 8 | N 8 | N 7 | N 7 | N 7 | N 7 | NNE 7 | NNE 7 | NNE 6 | NNE 7 | NNE 6 | NNE 6 | NNE 7 | NNE 6 |
| kJ | 919 | 870 | 845 | 850 | 630 | 437 | 345 | 292 | 258 | 215 | 203 | 152 | 206 | 203 | 186 | 170 | 175 | 176 | 200 | 181 | 144 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 331 | 330 | 331 | 331 | 231 | 259 | 259 | 231 | 38 | 259 | 231 | 38 | 231 | 231 | 38 | 231 | 231 | 38 | 38 | 38 | 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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