Surf Forecasts:
San Juan surf forecast from 30 Aug 2026:
- Best quality surf: Friday 4 Sep, 1AM (local time) - 4.5ft (1.3m), 8s period, N swell with glassy winds.
- Most powerful swell: Wednesday 2 Sep, 7AM (local time) - 8ft (2.5m), 8s period, NNE swell with 889 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 1AM (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 Friday (Sep 04) at 1AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.2m and 5s. 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 2.5m 8s and forecast to arrive on Wednesday (Sep 02) at 7AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 5s period and expected on Friday (Sep 04) at 10AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 4th Sep) | 4.5ft (1.3m) 8s |
| Best Surf | 1AM (Fri 4th Sep) | 4.5ft (1.3m) 8s |
| Most Powerful | 7AM (Wed 2nd Sep) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for San Juan over the next 16 days.
The Lowdown
Alright, let’s get into it for the San Juan area. The next 16 days are looking pretty grim, I gotta be honest. The only break on the cards is San Juan, a solid reef setup that’s for experts only, but the conditions are just not playing nice.
We kick off on Sunday, August 30th, with a 1.7m swell from the north, but the period is short at 9 seconds, and the wind is a fresh onshore breeze from the NNE at 30 km/h. That’s a recipe for chop and mess. The combined wave energy is moderate at 473, but it’s all for nothing with that wind. The water temp is 24°, which is a touch warmer than usual for this time of year, so that’s a small plus, but it doesn’t save the surf.
The onshore wind keeps blowing all through the first week. Swell hangs around 1.7m to 2.4m, but the period is short, and the wind is almost always onshore or cross-onshore. By Thursday, September 3rd, the swell drops to 1.5m, and the wind is still cross-onshore. The energy is down to 315, and it’s just not good. We hit a real low point around Sunday, September 6th, with swell dropping to 0.9m. It’s a dead zone.
The second week doesn’t get any better. We see a few pulses of 1.5m to 1.7m swell from the north-northeast, but the period stays short, mostly 6-7 seconds, and the wind is still onshore or cross-onshore. The energy picks up a bit around Friday, September 11th, hitting 373, but it’s still with a fresh onshore breeze. The whole 16-day run is a washout for quality surf.
Honestly, this is a total blank. There are no good surf options in the window. For an expert reef like San Juan, you need a clean, consistent swell with offshore winds, and we’re getting none of that. It’s a tough one, but forecasts can change, so don’t give up hope entirely. For now, I’d leave the board at home.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon afternoon, min 21°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Fri afternoon, min 22°C on Wed night). Winds decreasing (fresh winds from the NNE on Wed afternoon, calm by Thu night). | |||||||||||||||||||
Sun 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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) | N 7 | N 7 | N 7 | N 7 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 7 | N 7 | N 6 | N 6 | N 5 | N 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 311 | 255 | 329 | 358 | 310 | 481 | 584 | 669 | 763 | 316 | 535 | 265 | 229 | 191 | 131 | 124 | 132 | 77 | 87 | 92 |
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 | cross-on | on | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 4:00AM2.34m | 4:14PM2.44m | 4:35AM2.28m | 4:51PM2.31m | 5:14AM2.18m | 5:34PM2.14m | 6:01AM2.04m | 6:29PM1.94m | 7:03AM1.89m | 7:46PM1.77m | 8:31AM1.81m | 9:30PM1.71m | ||||||||
Low Tide | 9:50PM0.08m | 9:59AM0.16m | 10:23PM0.14m | 10:36AM0.24m | 10:59PM0.26m | 11:17AM0.36m | 11:42PM0.42m | 12:08PM0.51m | 00:36AM0.61m | 1:18PM0.67m | 1:55AM0.76m | 3:01PM0.73m | 3:41AM0.79m | |||||||
 |  |  | | | | | | | |  | | | | | | | | | | |
 | — | — | 7:31 | — | — | 7:31 | — | — | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | 7:33 | — | — |
 | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:13 | — | — | 8:12 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 22 | 23 | 21 | 22 | 23 | 22 | 23 | 23 | 22 | 26 | 26 | 24 | 26 | 27 | 24 | 26 | 27 | 24 |
Feels °C | 20 | 19 | 20 | 22 | 19 | 19 | 20 | 20 | 22 | 21 | 21 | 28 | 27 | 25 | 27 | 27 | 25 | 26 | 30 | 24 |
Swell 1 Height (m) Direction Period (s) | W 13 | W 12 | NW 11 | S 14 | N 9 | NNW 12 | NNW 11 | NNW 10 | S 14 | NE 8 | NNW 10 | N 8 | N 8 | N 8 | NW 9 | NW 9 | N 6 | NW 12 | NW 11 | NW 10 |
| kJ | 3 | 3 | 5 | 4 | 45 | 14 | 25 | 58 | 4 | 241 | 10 | 265 | 229 | 191 | 13 | 13 | 132 | 47 | 43 | 67 |
Swell 2 Height (m) Direction Period (s) | — | N 12 | S 15 | — | S 14 | S 14 | S 13 | W 8 | — | — | — | NNW 9 | S 13 | ENE 5 | — | — | NW 8 | NW 9 | NW 9 | N 7 |
| kJ | — | 3 | 4 | — | 4 | 4 | 3 | 1 | — | — | — | 43 | 3 | 2 | — | — | 11 | 20 | 20 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 10 | — | — | N 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | — | — | 1 |
Wind waves Height (m) Direction Period (s) | N 7 | N 7 | N 7 | N 7 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | N 8 | N 8 | — | — | — | N 7 | N 7 | N 7 | N 6 | N 5 | N 6 |
| kJ | 311 | 255 | 329 | 358 | 310 | 481 | 584 | 669 | 763 | 316 | 535 | — | — | — | 131 | 124 | 86 | 77 | 87 | 92 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 231 | 38 | 251 | 251 | 251 | 251 | 231 | 251 | 38 | 38 | 38 | 9 | 231 | 0 | 14 | 17 | 314 | 16 | 10 | 9 |
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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