Surf Forecasts:
San Juan surf forecast from 10 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 7AM (local time) - 6ft (1.8m), 7s period, NNE swell with 317 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 1.8m 7s and forecast to arrive on Saturday (Aug 15) 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 (Sat 15th Aug) | 6ft (1.8m) 7s |
Table - best surf conditions forecast for San Juan over the next 16 days.
The Lowdown
Alright, Rusty here again, and we’re looking at the 16-day stretch for San Juan. I gotta be straight with you, this one’s a tough read. Right off the bat, from August 10th all the way through to the end of the window on the 25th, every single entry is stamped with "poor surf conditions." That’s a solid 16-day gap with absolutely nothing worth paddling out for. Not a single recommendation. It’s a grim run for this spot.
Right now, the water is sitting at 74°, which is a touch warmer than usual for the time of year. That’s about all the good news there is.
The swell is onshore from the NNE for most of the period, with wind speeds chopping away at 15 to 20 mph. That’s a fresh breeze in your face, and the swell period is short—6 to 8 seconds—so it’s just weak, wind-chopped junk. Wave heights bounce around between 3 ft and 8 ft, but it doesn’t matter because the quality is shot.
By the time we get into the second week, there is a bit more energy in the water. On August 25th, the combined swell energy hits 825 (moderate wave energy), and the swell height touches 8 ft with a period of 8 seconds. But it’s still onshore, still messy. At that size, only experts should even think about it, and even then, the wind is just ruining it.
Given the persistent onshore flow and the beach-and-reef setup here, this looks way more interesting for kite surfing than for paddle surfing. For us surfers? It’s a blank run, and for this area, that’s not unusual when the wind sets in like this. The forecasts can change, but right now, I’d leave the board in the car.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon morning, min 20°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Thu morning, min 21°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 256 | 195 | 142 | 96 | 113 | 106 | 137 | 142 | 161 | 241 | 204 | 216 | 262 | 261 | 276 | 276 | 252 | 214 | 114 | 120 | 154 |
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 | cross-on | on |
High Tide | 12:32PM2.25m | 1:06AM2.17m | 1:24PM2.45m | 1:55AM2.31m | 2:10PM2.61m | 2:38AM2.39m | 2:52PM2.70m | 3:19AM2.42m | 3:33PM2.70m | 3:57AM2.38m | 4:12PM2.60m | 4:35AM2.30m | 4:50PM2.44m | ||||||||
Low Tide | 6:54PM0.25m | 7:08AM0.30m | 7:44PM0.08m | 7:54AM0.16m | 8:28PM-0.04m | 8:36AM0.08m | 9:09PM-0.08m | 9:15AM0.05m | 9:48PM-0.04m | 9:54AM0.09m | 10:24PM0.06m | 10:31AM0.19m | 11:00PM0.22m | ||||||||
 | |  | | | | | | | | | | | |  | | | | | | | |
 | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — |
 | — | 8:38 | — | — | 8:37 | — | — | 8:37 | — | — | 8:36 | — | — | 8:35 | — | — | 8:34 | — | — | 8:32 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 |
Feels °C | 20 | 20 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 21 | 20 | 20 | 20 | 20 | 20 | 21 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NNW 9 | NNW 9 | NNW 8 | WNW 10 | NW 10 | NW 9 | WNW 9 | NW 10 | NW 9 | WNW 9 | WNW 9 | NW 9 | NW 10 | NW 9 | NW 9 | NNW 10 | NNW 9 | NNE 7 | NNW 9 | NNE 8 |
| kJ | 31 | 46 | 58 | 37 | 11 | 25 | 41 | 59 | 94 | 86 | 73 | 54 | 36 | 94 | 68 | 67 | 38 | 35 | 114 | 32 | 154 |
Swell 2 Height (m) Direction Period (s) | WNW 7 | WNW 7 | WNW 7 | WNW 10 | N 14 | NNW 13 | NNW 12 | NNW 12 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NW 11 | N 10 | N 10 | — | WNW 8 | WNW 8 | NNW 10 | NW 8 | NNW 9 |
| kJ | 5 | 5 | 5 | 10 | 16 | 18 | 50 | 48 | 42 | 35 | 20 | 18 | 31 | 8 | 2 | — | 7 | 7 | 36 | 14 | 99 |
Swell 3 Height (m) Direction Period (s) | W 12 | NW 11 | NW 11 | NW 7 | NW 7 | W 7 | WNW 11 | — | — | N 13 | N 13 | NW 13 | N 11 | — | — | — | — | — | NW 5 | W 11 | WNW 8 |
| kJ | 3 | 5 | 5 | 2 | 2 | 1 | 12 | — | — | 3 | 3 | 6 | 9 | — | — | — | — | — | 7 | 2 | 6 |
Wind waves Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | — | NNE 8 | — |
| kJ | 256 | 195 | 142 | 96 | 113 | 106 | 137 | 142 | 161 | 241 | 204 | 216 | 262 | 261 | 276 | 276 | 252 | 214 | — | 120 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 259 | 231 | 259 | 392 | 38 | 38 | 38 | 330 | 330 | 38 | 330 | 38 | 38 | 334 | 331 | 256 | 231 | 38 | 38 | 149 | 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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