Surf Forecasts:
Saint Annes surf forecast from 15 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 2AM (local time) - 7.5ft (2.3m), 8s period, NW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 11PM (local time) - 10ft (3.0m), 8s period, NW swell with 1,086 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 2AM (local time) - 3ft (0.9m), 18s period with SSW swell.
Best Forecast Surf Conditions for Saint Annes this week:
The surf forecast for Saint Annes over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 15) at 2AM. The primary swell is predicted to be 0.9m and 18s period with a secondary swell of 0.6m and 14s. Another secondary swell of 1.0m and 7s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Saint Annes in the next 16 days are 3.0m 8s and forecast to arrive on Thursday (Aug 20) at 11PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 10s period and expected on Saturday (Aug 15) at 8PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Sat 15th Aug) | 3ft (0.9m) 18s |
| Best Surf | 2AM (Tue 18th Aug) | 7.5ft (2.3m) 8s |
| Most Powerful | 11PM (Thu 20th Aug) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Saint Annes over the next 16 days.
The Lowdown
Alright, let’s get this straight. For Saint Annes, the 16-day window is a mixed bag. The first week is pretty average, with small swell and mostly cross or cross-onshore winds keeping things messy. But if you’re patient, there’s a real gem waiting at the very end.
The overall pattern is a long stretch of marginal to poor conditions. From Friday 14 August right through to Thursday 27 August, expect mostly small swell, with heights bouncing between 1ft and 8ft, but the wind is never truly clean. It’s nearly always a cross-shore or cross-onshore, blowing from the WNW mainly. The period is short too, rarely over 8 seconds, so the waves will be weak and disorganised. The combined swell energy is moderate, hitting three-digit numbers like 560 to 851, but never strong enough to overcome the lumpy conditions.
The first standout comes on the morning of Saturday 29 August. The swell is 4ft from the SSW with a very long period of 18 seconds. That is a groundswell with serious energy—1187 (strong to very strong). The wind is light offshore from the SW, basically glassy. On a reef break like Saint Annes, that long period swell will wrap in nicely, offering clean, well-shaped lines. The water temperature is 64°, which is about 2° warmer than usual for the time of year, so nothing extreme. The difficulty is advanced, so this isn’t for beginners, but for the experienced surfer, this is the best on offer. Keep in mind, though, this is a fairly consistent break but it can get crowded often, especially when the quality pops.
The Saturday afternoon holds up pretty well too: 3ft from the SSW with a 17-second period, still big energy (1182), and a light cross-onshore. It’s marginal, but still far better than the previous days. Friday 28 August afternoon is also worth a mention: 4ft from the SSW, 12 seconds, with moderate energy (1104) but still cross-shore winds.
Before that, it’s a long wait. From 14 August to 27 August, nearly two weeks of poor surf. There’s a few mornings that scratch the marginal mark, like Tuesday 18 and Wednesday 26 August mornings, but none of them have the wind to back it up. The swell direction is mostly WNW for that middle period, and the reef is sheltered and prefers WNW, but the period is too short and the wind is all wrong.
Bottom line: if you can wait, the last weekend of August is where it’s at. The rest of the window is a write-off unless something changes.
Rusty
Short Range ForecastMostly dry. Warm (max 21°C on Mon morning, min 14°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Tue morning, min 17°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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) | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | NW 8 | SSW 16 | WNW 7 | WNW 8 | SSW 15 | SSW 16 | NW 8 | WNW 8 | WNW 8 | NW 8 |
Wave Graph | ||||||||||||||||||||
280 | 480 | 499 | 493 | 620 | 506 | 455 | 443 | 334 | 330 | 600 | 397 | 435 | 531 | 348 | 348 | 517 | 270 | 453 | 860 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | cross | glassy | cross-on | cross | cross-off | cross | cross | cross-off | cross | cross-on | glassy | cross-on | cross-on | glassy | cross-on | cross-on | glassy |
High Tide | 11:24PM0.79m | 12:40PM0.54m | 00:16AM0.60m | 1:20PM0.55m | 1:15AM0.41m | 2:01PM0.55m | 2:30AM0.22m | 2:45PM0.56m | 4:15AM0.09m | 3:33PM0.58m | 6:22AM0.06m | 4:25PM0.61m | ||||||||
Low Tide | 5:28PM-0.35m | 6:13AM-0.88m | 6:24PM-0.38m | 6:51AM-0.70m | 7:27PM-0.40m | 7:29AM-0.51m | 8:39PM-0.43m | 8:08AM-0.31m | 10:01PM-0.49m | 8:47AM-0.14m | 11:21PM-0.59m | 9:33AM-0.00m | 00:29AM-0.71m | |||||||
— | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | |
7:52 | — | — | 7:51 | — | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 15 | 19 | 19 | 15 | 19 | 19 | 15 | 21 | 20 | 20 | 25 | 25 | 19 | 23 | 23 | 18 | 23 | 23 | 19 |
Feels °C | 17 | 14 | 19 | 18 | 14 | 18 | 17 | 13 | 19 | 18 | 19 | 23 | 23 | 19 | 22 | 21 | 19 | 22 | 22 | 19 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | WNW 8 | SSW 16 | SSW 16 | WNW 8 | WNW 7 | SSW 16 | WNW 8 | SSW 14 | SSW 14 | WNW 8 |
280 | 480 | 499 | 493 | 620 | 506 | 455 | 443 | 334 | 330 | 296 | 397 | 298 | 270 | 167 | 348 | 277 | 236 | 236 | 465 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | WNW 6 | SW 13 | WNW 6 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | S 10 | SSW 14 | S 10 | SSW 13 | SSW 14 | SSW 15 | WNW 13 | SSW 15 | WNW 11 | WNW 11 | SSW 14 |
214 | 167 | 34 | 62 | 51 | 21 | 20 | 19 | 17 | 2 | 268 | 2 | 64 | 289 | 348 | 69 | 246 | 102 | 148 | 180 | |
Swell 3 Height (m) Direction Period (s) | S 9 | WNW 5 | SW 13 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 18 | — | NW 14 | WNW 15 | NW 14 | SW 21 | WNW 12 | SW 19 | SW 19 | SW 20 |
15 | 19 | 85 | 18 | 18 | 18 | 8 | 8 | 7 | 7 | 32 | — | 7 | 21 | 47 | 18 | 89 | 57 | 14 | 15 | |
Wind waves Height (m) Direction Period (s) | WNW 8 | NW 7 | WNW 7 | WNW 5 | NW 6 | WNW 6 | WNW 5 | WNW 5 | WNW 6 | WNW 6 | NW 8 | WNW 8 | WNW 7 | WNW 8 | WNW 7 | WNW 7 | NW 8 | WNW 8 | WNW 8 | NW 8 |
66 | 107 | 78 | 49 | 86 | 24 | 42 | 44 | 62 | 218 | 600 | 263 | 435 | 531 | 282 | 191 | 517 | 270 | 453 | 860 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 117 | 0 | 333 | 117 | 0 | 189 | 117 | 0 | 87 | 116 | 0 | 148 | 87 | 0 | 85 | 117 | 0 | 230 | 87 | 0 |
Best forecast wave conditions in San Luis Obispo | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Saint Annes Surf forecast
The above surf forecast table for Saint Annes provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Saint Annes can be found by selecting the local surf guide option on the grey menu. Our Saint Annes 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 (Saint Annes) 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 Saint Annes 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.
Saint Annes is 4 km (2 miles) from Port San Luis. If you plan a vacation in San Luis Obispo, look for hotels and other accommodation in Port San Luis. Port San Luis has rooms for a wide range of budgets as well as car hire and transport links.











