Surf Forecasts:
San Juan surf forecast from 23 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 7AM (local time) - 10ft (3.0m), 8s period, NNE swell with 1,089 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 3.0m 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) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for San Juan over the next 16 days.
The Lowdown
Alright, folks. Rusty here. Let’s break down what’s happening at San Juan. I’ll be honest, this is a rough one. The entire 16-day window is a total bust for good waves. Not a single session worth paddling out for.
We’re locked into a pattern of onshore winds – mostly from the N and NNE, blowing at 16 mph to 28 mph. That’s a fresh breeze to a strong breeze, and it’s just tearing the surface apart. The swell is coming from the same direction as the wind, mostly NNE, with short periods of only 7 to 8 seconds. That’s pure windswell, not the good stuff. It’s going to be a messy, choppy, blown-out disaster. Wave heights do build from 5 ft up to 8 ft around the 25th and 26th of July, but with that wind, it’s just a churning wall of whitewater. The combined energy peaks at 984 (moderate wave energy) on the 25th, but it’s completely useless for surfing.
This is a reef break that needs a clean swell from the NNW. We’re getting nothing close to that. The wind is never offshore, and it’s mostly directly onshore. A few days at the end of July and into early August, the swell drops a little, but the wind doesn’t let up. The 4th of August shows a slight period jump to 10 seconds, but it’s still onshore. The 5th shows a period of 11 seconds with a 3 ft swell, but again, pinned by a strong breeze from the NNE. You can’t polish a turd.
Water temp is sitting at 72° on the 23rd, which is about average for this time of year. Not that you’ll care when you’re getting blown off your board.
This is a classic case of poor conditions for the whole stretch. Honestly, with the consistent onshore wind and the size of that swell, this setup looks more interesting for kite surfing than paddle surfing. It’s a 16-day blank run. It’s a bummer, but it happens. Don’t force it. Forecasts can change, but right now, leave the boards on the rack.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Thu afternoon, min 19°C on Thu night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Sun afternoon, min 20°C on Sun night). Mainly fresh winds. | |||||||||||||||||||
Thu 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
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 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | N 8 | N 8 | N 8 | N 7 | N 7 | N 7 | N 7 | N 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 373 | 420 | 540 | 540 | 654 | 919 | 984 | 956 | 870 | 705 | 520 | 385 | 300 | 259 | 221 | 181 | 173 | 203 | 203 | 218 |
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 | cross-on | on | on | cross-on | on |
High Tide | 10:14PM1.64m | 10:51AM1.74m | 11:27PM1.67m | 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 | |||||||
Low Tide | 4:23AM0.84m | 5:13PM0.80m | 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 | ||||||||
 |  | |  | | | | | | |  | | | | | | | | | | |
 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — |
 | 8:51 | — | — | 8:51 | — | — | 8:50 | — | — | 8:50 | — | — | 8:49 | — | — | 8:49 | — | — | 8:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 20 | 20 | 19 | 20 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 |
Feels °C | 19 | 17 | 16 | 16 | 14 | 15 | 16 | 15 | 17 | 17 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 9 | WNW 8 | WNW 8 | WNW 8 | — | — | — | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | N 12 | N 11 | N 11 | WNW 11 | WNW 11 | WNW 11 |
| kJ | 21 | 20 | 7 | 7 | 7 | — | — | — | 10 | 9 | 9 | 8 | 8 | 8 | 12 | 10 | 20 | 12 | 12 | 22 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | N 14 | NW 8 | NW 8 | WNW 12 | NW 8 | N 11 | N 10 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 3 | 3 | 14 | 3 | 3 | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 13 | NW 12 | NW 8 | — | NW 8 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 6 | 3 | — | 2 | — |
Wind waves Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | N 8 | N 8 | N 8 | N 7 | N 7 | N 7 | N 7 | N 7 |
| kJ | 373 | 420 | 540 | 540 | 654 | 919 | 984 | 956 | 870 | 705 | 520 | 385 | 300 | 259 | 221 | 181 | 173 | 203 | 203 | 218 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 330 | 331 | 331 | 519 | 335 | 331 | 331 | 331 | 331 | 334 | 259 | 38 | 231 | 38 | 231 | 231 | 38 | 397 | 231 | 331 |
Best forecast wave conditions in Lanzarote | ||||||||||||||||||||
Best forecast wave conditions in Spain (Africa) | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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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