Surf Forecasts:
San Juan surf forecast from 10 Sep 2026:
- Best quality surf: Sunday 13 Sep, 1PM (local time) - 4.5ft (1.3m), 8s period, N swell with glassy winds.
- Most powerful swell: Saturday 12 Sep, 7PM (local time) - 6ft (1.9m), 8s period, N swell with 481 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 1PM (local time) - 4.5ft (1.3m), 8s period with N swell.
Best Forecast Surf Conditions for San Juan this week:
The surf forecast for San Juan over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 1PM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.6m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at San Juan in the next 16 days are 1.9m 8s and forecast to arrive on Saturday (Sep 12) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Sun 13th Sep) | 4.5ft (1.3m) 8s |
| Best Surf | 1PM (Sun 13th Sep) | 4.5ft (1.3m) 8s |
| Most Powerful | 7PM (Sat 12th Sep) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for San Juan over the next 16 days.
The Lowdown
Alright surfers, Rusty here. Let's be real about the next couple of weeks at San Juan. It’s a bit of a rough patch to start, but there’s a genuine window of clean waves if you’re patient.
The first week is mostly a write-off for us. We’ve got a lot of northerly wind blowing straight onshore, and it’s making a mess of the swell. The water is sitting at 75°, which is a touch warmer than normal for this time of year, so at least you won't be freezing while you're getting blown off your board.
We're looking at a solid gap from now until the morning of Sunday, September 13th. That’s four days of onshore slop and no real recommendations. The wind is howling from the north at 19 to 22 mph, and the swell is getting chopped up. It’s not worth paddling out.
Then, Sunday morning. That’s where it gets interesting. On the 13th of September, the wind drops completely. We’re talking glassy conditions – zero wind, and the swell is a clean 4 ft out of the north. The energy is there but it’s only moderate (301). That’s the standout of the entire forecast. The waves will be clean and lined up, perfect for an expert-level reef break. It’s a session that’s hard to beat. The afternoon holds, too, with a light 6 mph offshore from the southwest, keeping the 4 ft north swell clean. Crowds are always a possibility here, so get in early.
After that, it dries up again. The rest of the week is back to onshore winds and small, messy waves. We get a minor pulse around the 22nd of September with a long-period 5 ft north swell, but the wind is howling onshore again at 16 mph, so it’s not going to be pretty. The energy is strong (923), but the conditions are just poor. That setup looks more interesting for kite surfing than paddle surfing, to be honest.
The long-range stuff around the 24th and 25th of September is a week and a half away, so it’s a bit of a tease. There’s some swell, but the wind is still onshore, so don’t book time off work yet.
Keep your eyes on Sunday the 13th. That’s the one.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Thu morning, min 21°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Mon afternoon, min 22°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 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 6 | NNE 7 | NNE 7 | N 7 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | NNW 12 | NNW 12 | NNW 12 | NNW 11 | NNW 10 | NNW 10 | NNE 5 | NNE 6 | NNE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 154 | 172 | 268 | 365 | 397 | 408 | 391 | 481 | 432 | 207 | 206 | 142 | 136 | 127 | 119 | 103 | 59 | 56 | 70 | 216 | 303 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-on | on | cross-on | cross-on | on | glassy | off | cross-on | on | cross-on | on | on | on | on | on | on | on |
High Tide | 1:51PM2.61m | 2:17AM2.42m | 2:30PM2.66m | 2:52AM2.45m | 3:06PM2.63m | 3:26AM2.43m | 3:41PM2.52m | 3:59AM2.36m | 4:15PM2.35m | 4:31AM2.24m | 4:49PM2.15m | 5:04AM2.08m | 5:24PM1.93m | ||||||||
Low Tide | 8:08PM-0.03m | 8:15AM0.07m | 8:43PM-0.05m | 8:51AM0.04m | 9:16PM-0.01m | 9:25AM0.08m | 9:47PM0.10m | 9:59AM0.17m | 10:18PM0.24m | 10:34AM0.31m | 10:49PM0.42m | 11:09AM0.48m | 11:22PM0.60m | ||||||||
 |  |  | | |  | | | | | | | | | | | | | | | | |
 | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:39 | — | — |
 | — | 8:06 | — | — | 8:04 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 8:00 | — | — | 7:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 22 | 21 | 22 | 23 | 22 | 23 | 23 | 22 | 24 | 24 | 25 | 25 | 27 | 25 | 26 | 26 | 24 | 23 | 23 | 21 |
Feels °C | 21 | 19 | 17 | 18 | 20 | 20 | 22 | 22 | 22 | 28 | 27 | 28 | 27 | 27 | 26 | 27 | 26 | 24 | 22 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | NNW 8 | NNW 12 | N 13 | N 12 | N 11 | N 11 | N 10 | NW 10 | N 8 | N 8 | N 8 | N 8 | N 8 | NNW 12 | NNW 12 | NNW 11 | NNW 10 | NNW 10 | NNW 9 | NW 11 | NW 10 |
| kJ | 22 | 13 | 32 | 72 | 92 | 85 | 90 | 24 | 432 | 207 | 206 | 142 | 61 | 127 | 119 | 103 | 59 | 56 | 16 | 41 | 50 |
Swell 2 Height (m) Direction Period (s) | NW 12 | N 14 | NNW 11 | NNW 10 | W 12 | WNW 11 | NW 10 | W 10 | NW 9 | NE 9 | WNW 9 | NNW 14 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 7 | NW 11 | WNW 8 | N 14 |
| kJ | 6 | 4 | 24 | 19 | 3 | 12 | 25 | 2 | 22 | 62 | 30 | 81 | 65 | 50 | 45 | 33 | 31 | 19 | 19 | 6 | 4 |
Swell 3 Height (m) Direction Period (s) | NW 8 | NW 7 | NW 7 | W 7 | W 10 | — | — | — | — | WNW 9 | NNW 15 | WNW 10 | NNW 12 | N 7 | NW 9 | N 7 | N 7 | WNW 8 | WNW 8 | N 15 | N 14 |
| kJ | 2 | 2 | 2 | 1 | 2 | — | — | — | — | 32 | 45 | 38 | 136 | 51 | 20 | 23 | 24 | 7 | 6 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | NNE 7 | NNE 6 | NNE 7 | NNE 7 | N 7 | N 8 | N 8 | N 8 | — | — | — | — | — | — | N 8 | — | NNW 2 | N 6 | NNE 5 | NNE 6 | NNE 7 |
| kJ | 154 | 172 | 268 | 365 | 397 | 408 | 391 | 481 | — | — | — | — | — | — | 55 | — | 1 | 27 | 70 | 216 | 303 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 259 | 231 | 330 | 330 | 231 | 231 | 231 | 231 | 38 | 0 | 0 | 2 | 9 | 10 | 10 | 9 | 17 | 38 | 256 | 38 | 231 |
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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