Surf Forecasts:
Sewers surf forecast from 18 Sep 2026:
- Best quality surf: Saturday 19 Sep, 2AM (local time) - 6ft (1.8m), 7s period, NW swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 8AM (local time) - 3ft (0.9m), 17s period, SW swell with 470 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 2AM (local time) - 1.5ft (0.4m), 20s period with SW swell.
Best Forecast Surf Conditions for Sewers this week:
The surf forecast for Sewers over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 18) at 2AM. The primary swell is predicted to be 0.4m and 20s period with a secondary swell of 0.6m and 4s. Another secondary swell of 1.0m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sewers in the next 16 days are 0.9m 17s and forecast to arrive on Monday (Sep 21) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 14s period and expected on Thursday (Sep 24) at 5PM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 18th Sep) | 1.5ft (0.4m) 20s |
| Best Surf | 2AM (Sat 19th Sep) | 6ft (1.8m) 7s |
| Most Powerful | 8AM (Mon 21st Sep) | 3ft (0.9m) 17s |
Table - best surf conditions forecast for Sewers over the next 16 days.
Short Range ForecastMostly dry. Warm (max 22°C on Fri morning, min 15°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Wed morning, min 15°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | ||||||||||||||
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) | SW 21 | SW 20 | SW 19 | SW 19 | NW 7 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | WNW 11 | SW 15 | SW 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 162 | 148 | 236 | 236 | 287 | 255 | 375 | 311 | 375 | 375 | 358 | 465 | 465 | 459 | 362 | 421 | 367 | 403 | 317 | 309 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross | cross-off | cross | cross | cross-on | on | cross-on | cross | cross-on | cross | cross-off | cross-on | cross | cross-off | on | glassy | glassy |
High Tide | 2:13PM0.61m | 6:59AM0.12m | 3:01PM0.58m | 4:02PM0.55m | 8:47AM0.22m | 5:11PM0.55m | 8:53AM0.24m | 6:17PM0.56m | 9:01AM0.27m | 7:14PM0.58m | 9:11AM0.31m | 8:06PM0.60m | ||||||||
Low Tide | 10:29PM-0.71m | 7:33AM0.12m | 11:37PM-0.74m | 00:35AM-0.77m | 11:24AM0.19m | 1:22AM-0.78m | 12:40PM0.12m | 2:00AM-0.78m | 1:32PM-0.01m | 2:32AM-0.75m | 2:16PM-0.16m | 3:01AM-0.71m | ||||||||
 |  | | | | | |  |  | | | | | | | | | | | | |
 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — |
 | 7:07 | — | — | 7:05 | — | — | 7:04 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 15 | 22 | 22 | 18 | 22 | 20 | 15 | 18 | 19 | 15 | 18 | 19 | 15 | 21 | 21 | 19 | 23 | 23 | 22 |
Feels °C | 16 | 14 | 20 | 18 | 16 | 20 | 18 | 15 | 18 | 18 | 14 | 17 | 17 | 14 | 20 | 20 | 19 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 14 | SW 19 | WNW 7 | SW 18 | SW 18 | WNW 7 | WNW 7 | SW 18 | WNW 7 | WNW 7 | SW 17 | SW 17 | WNW 9 | SW 16 | WNW 8 | WNW 11 | WNW 11 | WNW 11 |
| kJ | 196 | 242 | 165 | 236 | 125 | 255 | 375 | 136 | 105 | 375 | 178 | 108 | 465 | 459 | 127 | 421 | 147 | 403 | 317 | 247 |
Swell 2 Height (m) Direction Period (s) | S 12 | WNW 4 | SW 19 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SW 18 | SSW 12 | SW 17 | SW 17 | SSW 12 | WNW 8 | SW 16 | S 11 | SW 16 | SW 15 | SW 15 | SW 15 |
| kJ | 45 | 16 | 236 | 105 | 101 | 99 | 67 | 311 | 375 | 49 | 358 | 465 | 47 | 87 | 362 | 22 | 367 | 340 | 314 | 309 |
Swell 3 Height (m) Direction Period (s) | SW 21 | SW 20 | S 11 | S 11 | SW 19 | S 10 | S 10 | SSW 12 | SSW 12 | S 9 | SSW 13 | SSW 13 | — | SSW 12 | S 12 | NW 14 | NW 12 | S 11 | S 11 | S 10 |
| kJ | 162 | 148 | 37 | 20 | 181 | 8 | 7 | 58 | 48 | 2 | 55 | 55 | — | 46 | 24 | 30 | 114 | 21 | 9 | 19 |
Wind waves Height (m) Direction Period (s) | WNW 8 | NW 8 | WNW 5 | WNW 5 | NW 7 | WNW 7 | WNW 6 | NW 7 | WNW 7 | WNW 6 | NW 7 | NW 7 | WNW 8 | — | — | WNW 9 | — | — | — | — |
| kJ | 76 | 135 | 14 | 125 | 287 | 77 | 115 | 240 | 218 | 136 | 352 | 206 | 161 | — | — | 157 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 113 | 0 | 5 | 99 | 0 | 233 | 93 | 30 | 84 | 93 | 5 | 250 | 113 | 0 | 209 | 114 | 0 | 29 | 0 | 0 |
Best forecast wave conditions in San Luis Obispo | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sewers surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Sewers Surf forecast
The above surf forecast table for Sewers provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sewers can be found by selecting the local surf guide option on the grey menu. Our Sewers 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 (Sewers) 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 Sewers 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.
Sewers is 7 km (4 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.
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