Surf Forecasts:
San Juan surf forecast from 13 Jul 2026:
- Most powerful swell: Saturday 18 Jul, 1PM (local time) - 7ft (2.2m), 8s period, NNE swell with 605 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 2.2m 8s and forecast to arrive on Saturday (Jul 18) at 1PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 12s period and expected on Monday (Jul 13) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Sat 18th Jul) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for San Juan over the next 16 days.
Alright gang, Rusty here. Let's get real about the next couple of weeks.
Honestly, this is a rough one. The outlook for San Juan is just plain ugly for the whole 16 days. We're looking at a complete drought of decent surf. The first few days are a total loss, and the pattern doesn't really change.
From Monday the 13th all the way through the end of the month, every report is calling it "poor surf conditions." The wind is nearly always onshore or cross-onshore, which will ruin any hope of a clean wave. The swell is coming from the NNW, NNE, and N, which is the right direction, but the wind is the enemy here.
We start on Monday the 13th with a weak 3ft swell, but it's blown out by a 15 km/h onshore breeze. The water is a touch warmer than average at 73°F, but that's the only bright spot. The swell energy is weak, sitting at 165. Tuesday and Wednesday are more of the same.
The swell starts to build from Thursday the 16th, hitting 6ft and energy climbing to 300, but it's all onshore wind. By Friday the 17th, we're looking at a 7ft swell from the NE with a combined energy of 491, but the wind is howling onshore at 35 km/h. That's going to be a messy, closed-out battle. For an expert reef, it's a tough paddle into a washing machine.
The biggest stuff arrives on Saturday the 18th and Monday the 27th of July, with swell heights hitting 7ft and 8ft, and energy readings hitting the 600s and 700s. But the wind is a strong breeze, all onshore or cross-onshore. At that size with that wind, this is a kiteboarding or windsurfing session, not a surfing one. The period is short, around 6 to 8 seconds, so it's just lumpy, weak windswell.
There are no standouts here. No clean, offshore windows. The whole 16-day run is a bust. It's a long stretch of onshore slop, and I'd say save your energy and wait for a better forecast. This is one of those times to just stay home.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon afternoon, min 20°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Thu morning, min 21°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||
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 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NE 5 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NE 8 | NNE 8 | NNE 7 | NNE 8 | NNE 8 | NNE 7 | NNE 8 | NNE 7 | NNE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 165 | 161 | 111 | 76 | 36 | 51 | 49 | 97 | 100 | 216 | 269 | 286 | 478 | 452 | 443 | 605 | 493 | 417 | 389 | 349 | 305 |
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 | cross-on |
High Tide | 1:32PM2.42m | 2:03AM2.31m | 2:22PM2.56m | 2:53AM2.36m | 3:09PM2.64m | 3:39AM2.36m | 3:55PM2.66m | 4:24AM2.30m | 4:40PM2.59m | 5:09AM2.21m | 5:24PM2.45m | 5:53AM2.10m | 6:09PM2.26m | ||||||||
Low Tide | 7:50PM0.10m | 8:04AM0.17m | 8:40PM-0.01m | 8:51AM0.12m | 9:28PM-0.04m | 9:36AM0.12m | 10:14PM-0.01m | 10:19AM0.17m | 10:58PM0.09m | 11:02AM0.27m | 11:42PM0.23m | 11:46AM0.40m | 00:25AM0.40m | ||||||||
 | |  | | | | | | | | | | | | |  | | | | |  | |
 | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — |
 | — | 8:54 | — | — | 8:54 | — | — | 8:54 | — | — | 8:53 | — | — | 8:53 | — | — | 8:53 | — | — | 8:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 23 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 23 | 22 | 21 | 22 | 22 | 21 | 22 | 22 | 21 | 23 | 23 | 22 |
Feels °C | 21 | 22 | 21 | 21 | 20 | 20 | 20 | 21 | 20 | 21 | 19 | 19 | 19 | 19 | 18 | 18 | 19 | 18 | 20 | 20 | 23 |
Swell 1 Height (m) Direction Period (s) | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | N 8 | WNW 9 | NW 8 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 |
| kJ | 165 | 161 | 111 | 76 | 36 | 51 | 33 | 32 | 14 | 16 | 31 | 30 | 13 | 13 | 13 | 6 | 6 | 6 | 6 | 6 | 6 |
Swell 2 Height (m) Direction Period (s) | S 12 | — | W 13 | NW 11 | N 9 | WNW 10 | NW 9 | N 8 | WNW 10 | WNW 7 | — | — | — | — | — | W 9 | — | — | — | — | NW 8 |
| kJ | 3 | — | 3 | 5 | 15 | 10 | 21 | 1 | 18 | 9 | — | — | — | — | — | 2 | — | — | — | — | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | N 7 | S 11 | WNW 7 | WNW 7 | — | — | W 7 | N 11 | — | — | — | — | — | — | — | — | — | — | N 11 |
| kJ | — | — | 1 | 3 | 5 | 5 | — | — | 1 | 2 | — | — | — | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | — | — | NE 3 | NE 3 | NE 4 | NE 4 | NE 5 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NE 8 | NNE 8 | NNE 7 | NNE 8 | NNE 8 | NNE 7 | NNE 8 | NNE 7 | NNE 7 |
| kJ | — | — | 2 | 4 | 10 | 21 | 49 | 97 | 100 | 216 | 269 | 286 | 478 | 452 | 443 | 605 | 493 | 417 | 389 | 349 | 305 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 330 | 231 | 256 | 334 | 330 | 339 | 256 | 256 | 331 | 256 | 330 | 392 |
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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