Surf Forecasts:
San Juan surf forecast from 16 Jul 2026:
- Most powerful swell: Thursday 23 Jul, 1PM (local time) - 7.5ft (2.3m), 8s period, NNE swell with 636 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 2.3m 8s and forecast to arrive on Thursday (Jul 23) at 1PM. 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 | 1PM (Thu 23rd Jul) | 7.5ft (2.3m) 8s |
Table - best surf conditions forecast for San Juan over the next 16 days.
The Lowdown
Alright folks, it’s Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.
Truth be told, we’re looking at a bit of a long, dry spell before anything gets interesting. The whole 16-day window is pretty much a write-off for quality, surfable waves. There’s a gap right from the start, with no decent surf until the very end of the run. The wind is relentless, blowing onshore from the NNE or N at 18 to 25 mph, and that’s a massive problem. The water temp is running a touch warmer than normal at 74°F at the start, but that’s about the only positive.
The spot on the radar is San Juan – a reef break that’s best for experts. We see some swell building right through the period, but it’s all short-period stuff (6 to 8 seconds) and the wind is just trashing it. The wind is constantly on or cross-on, which for a reef break, is just ugly. For the first week and a half, the combined energy climbs from 210 (moderate) up to over 1200 (very strong) by the 25th of July, but it’s all for nothing when the faces are chopped up by that breeze. The swell direction is mostly NNE, which is fine for the spot, but it doesn’t matter when the wind is ruining the surface. The wave comment is stuck on “poor surf conditions” every single entry.
The only real standout, if you can call it that, is around July 31st in the morning. The swell is a solid 10 ft from the NNE, with a period of 8 seconds, and the combined energy is a massive 1204 (very strong). That’s a lot of water moving around. But it’s still a fresh onshore breeze, so it’s going to be a messy, lumpy, powerful wave. For advanced or expert chargers only, and even then, you’ll be scratching your head. The afternoon on the 31st sees a slight shift to a cross-on wind, which is still not clean. Because of the persistent onshore wind and the exposed nature of the break, this setup honestly looks more interesting for kite surfing than paddle surfing.
We’re talking a solid 10 days of frustration before the swell gets truly maxed out. Not a great outlook for getting a clean wave.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Thu morning, min 21°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun morning, min 20°C on Sun night). Mainly strong winds. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||
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) | NE 6 | NE 7 | NNE 7 | NE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 7 | NNE 7 | NNE 8 | NNE 8 | NNE 7 | NNE 8 | NNE 8 | NNE 7 | NNE 8 | NNE 7 | NNE 7 | NNE 8 | NNE 8 | NNE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 167 | 183 | 199 | 330 | 320 | 307 | 393 | 379 | 369 | 459 | 447 | 456 | 487 | 469 | 456 | 452 | 415 | 498 | 620 | 570 | 588 |
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 | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 3:55PM2.66m | 4:24AM2.30m | 4:40PM2.59m | 5:09AM2.21m | 5:24PM2.45m | 5:53AM2.10m | 6:09PM2.26m | 6:38AM1.97m | 6:56PM2.06m | 7:29AM1.85m | 7:50PM1.86m | 8:28AM1.75m | 8:56PM1.71m | ||||||||
Low Tide | 10:14PM-0.01m | 10:19AM0.17m | 10:58PM0.09m | 11:02AM0.27m | 11:42PM0.23m | 11:46AM0.40m | 00:25AM0.40m | 12:34PM0.55m | 1:11AM0.57m | 1:28PM0.70m | 2:03AM0.72m | 2:34PM0.81m | 3:08AM0.81m | ||||||||
 | |  | | |  | | | |  | | | | | | | | | | | | |
 | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — |
 | — | 8:53 | — | — | 8:53 | — | — | 8:53 | — | — | 8:52 | — | — | 8:52 | — | — | 8:52 | — | — | 8:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 |
Feels °C | 20 | 20 | 19 | 20 | 20 | 19 | 20 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 19 | 18 | 18 | 19 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 9 |
| kJ | 32 | 31 | 30 | 13 | 13 | 13 | 6 | 6 | 6 | 16 | 15 | 14 | 13 | 11 | 5 | 13 | 30 | 29 | 25 | 24 | 23 |
Swell 2 Height (m) Direction Period (s) | WNW 7 | — | — | — | — | — | W 11 | W 11 | NW 10 | — | — | N 11 | — | W 13 | NW 9 | W 9 | W 9 | NW 8 | — | W 8 | — |
| kJ | 9 | — | — | — | — | — | 3 | 2 | 4 | — | — | 2 | — | 3 | 3 | 2 | 2 | 3 | — | 1 | — |
Swell 3 Height (m) Direction Period (s) | N 11 | — | — | — | — | — | W 12 | — | — | — | — | — | — | — | NW 12 | — | — | — | — | — | — |
| kJ | 2 | — | — | — | — | — | 3 | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 6 | NE 7 | NNE 7 | NE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 7 | NNE 7 | NNE 8 | NNE 8 | NNE 7 | NNE 8 | NNE 8 | NNE 7 | NNE 8 | NNE 7 | NNE 7 | NNE 8 | NNE 8 | NNE 8 |
| kJ | 167 | 183 | 199 | 330 | 320 | 307 | 393 | 379 | 369 | 459 | 447 | 456 | 487 | 469 | 456 | 452 | 415 | 498 | 620 | 570 | 588 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 397 | 330 | 334 | 231 | 259 | 256 | 231 | 256 | 256 | 256 | 256 | 256 | 330 | 330 | 330 | 330 | 330 | 330 | 330 | 330 |
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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