Surf Forecasts:
San Juan surf forecast from 23 Aug 2026:
- Most powerful swell: Saturday 29 Aug, 7PM (local time) - 8ft (2.5m), 11s period, NNE swell with 1,375 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 11s and forecast to arrive on Saturday (Aug 29) at 7PM. 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 | 7PM (Sat 29th Aug) | 8ft (2.5m) 11s |
Table - best surf conditions forecast for San Juan over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you. Right now, and for the next couple of weeks, the surf around San Juan is looking proper average.
The only real window on the cards is this Sunday morning (August 23rd). We’ve got a clean 3ft of NNW groundswell at 15 seconds rolling in, with light cross-on winds. It’s not huge, but there’s some push in it. The water’s sitting at 75°, which is a touch warmer than usual for this time of year – you won’t be needing the thick rubber. That’s your window, and honestly, it’s the only one I’d paddle out for.
After that, it’s a total shut-down. Monday through Saturday are all onshore junk – 15 to 25 mph winds out of the NNE, just smashing any chance of a clean face. The swell does build through the back half of the week, with Thursday the 27th seeing some energy pick up, and by Friday the 28th into Saturday the 29th there’s some proper size on the way – up to 8ft. But it’s all short-period, messy, blown-out slop. That kind of swell with those winds, you’re looking at a washing machine. The combined energy down there on Saturday the 29th is reading strong, but it’s all for nothing with that wind. If you’ve got a kite, that might be more your scene than a surfboard.
The whole of the second week pretty much follows suit. Sunday the 30th has some size but it’s still onshore, and it just fades from there. The waves drop from the 7ft mark down to around 3ft by Tuesday the 8th of September, but the wind stays up in your face basically the entire time. There’s one sliver of a reprieve on Saturday the 5th of September when the wind eases to a cross-on, but the swell is down to a gutless 3ft at 7 seconds – not worth the paddle.
So there you have it. The long-range looks promising in size for a couple of days late next week, but unless the wind switches, it’s going to stay messy. I’d say get out there Sunday morning if you can, and then maybe keep an eye on the forecast for a change, because at this rate, the blank run is going to feel long.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Sun afternoon, min 21°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Wed afternoon, min 21°C on Thu night). Mainly strong winds. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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) | NNW 15 | NNW 13 | NNW 13 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | N 8 | NNE 5 | N 6 | NNE 6 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 11 | NNE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 417 | 1127 | 1276 | 831 | 705 | 540 | 283 | 266 | 206 | 90 | 85 | 113 | 41 | 119 | 272 | 627 | 661 | 887 | 939 | 1375 | 627 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 11:34AM1.76m | 00:07AM1.70m | 12:24PM1.92m | 00:49AM1.86m | 1:02PM2.10m | 1:23AM2.00m | 1:35PM2.26m | 1:55AM2.13m | 2:06PM2.39m | 2:25AM2.24m | 2:37PM2.49m | 2:56AM2.31m | 3:08PM2.53m | 3:27AM2.35m | |||||||
Low Tide | 5:59PM0.75m | 6:07AM0.74m | 6:42PM0.60m | 6:46AM0.58m | 7:17PM0.44m | 7:20AM0.43m | 7:48PM0.30m | 7:52AM0.31m | 8:19PM0.18m | 8:22AM0.21m | 8:48PM0.10m | 8:53AM0.15m | 9:19PM0.07m | ||||||||
 | |  | | | | | | | | | |  | | | | | | | | | |
 | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — | 7:30 | — | — |
 | — | 8:25 | — | — | 8:24 | — | — | 8:23 | — | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | — | 8:20 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 24 | 22 | 23 | 23 | 22 | 22 | 23 | 22 | 22 | 23 | 22 | 23 | 23 | 22 | 22 | 22 | 21 | 22 | 22 | 21 |
Feels °C | 24 | 25 | 23 | 23 | 22 | 21 | 20 | 22 | 21 | 20 | 22 | 20 | 22 | 20 | 18 | 17 | 17 | 17 | 19 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | NNW 15 | NNW 13 | NNW 13 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NW 9 | N 7 | NW 8 | N 13 | N 10 | — | N 13 | N 11 | — | NNW 11 |
| kJ | 417 | 1127 | 1276 | 831 | 705 | 540 | 283 | 266 | 206 | 90 | 85 | 3 | 16 | 3 | 3 | 8 | — | 85 | 319 | — | 153 |
Swell 2 Height (m) Direction Period (s) | N 9 | WNW 9 | WNW 8 | W 8 | — | — | W 11 | NW 10 | NW 10 | NW 9 | NW 9 | — | NW 8 | — | — | — | — | — | — | — | — |
| kJ | 133 | 7 | 7 | 5 | — | — | 2 | 4 | 4 | 3 | 3 | — | 3 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | N 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 39 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 3 | NNE 4 | NNE 4 | NE 4 | NE 4 | NE 5 | NNE 4 | NNE 4 | N 8 | NNE 5 | N 6 | NNE 6 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 11 | NNE 8 |
| kJ | — | — | — | 4 | 5 | 13 | 11 | 10 | 14 | 13 | 12 | 113 | 41 | 119 | 272 | 627 | 661 | 887 | 939 | 1375 | 627 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 10 | 10 | 38 | 38 | 38 | 38 | 38 | 38 | 231 | 38 | 392 | 368 | 519 | 394 | 392 | 331 | 331 | 331 | 231 | 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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