
Surf Forecasts:
Cap Sim surf forecast from 11 Sep 2026:
- Best quality surf: Friday 18 Sep, 1AM (local time) - 5ft (1.6m), 10s period, NNW swell with offshore winds.
- Most powerful swell: Friday 18 Sep, 7AM (local time) - 5.5ft (1.7m), 10s period, NNW swell with 540 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 4AM (local time) - 4.5ft (1.3m), 7s period with N swell.
Best Forecast Surf Conditions for Cap Sim this week:
The surf forecast for Cap Sim over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 4AM. The primary swell is predicted to be 1.3m and 7s period with a secondary swell of 0.4m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cap Sim in the next 16 days are 1.7m 10s and forecast to arrive on Friday (Sep 18) at 7AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Wednesday (Sep 16) at 4PM.
| Wave Type | Time (+01) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 13th Sep) | 4.5ft (1.3m) 7s |
| Best Surf | 1AM (Fri 18th Sep) | 5ft (1.6m) 10s |
| Most Powerful | 7AM (Fri 18th Sep) | 5.5ft (1.7m) 10s |
Table - best surf conditions forecast for Cap Sim over the next 16 days.
The Lowdown
Gap days? Yeah, we’ve got them. The next week and a half is pretty grim for Cap Sim, so don’t get too excited about paddling out just yet. We’re looking at a blank stretch from now until around the 14th, mostly small, wind-blown junk with that north wind chopping things up. You’ll see a couple of mornings with that swell trying to bump up, but the period is short and the wind is just messy. It’s the kind of spell where you check the cam, sigh, and go back to fixing your dings.
Then, around Monday the 14th, things start to wake up a little. We get a proper push of west-northwest groundswell with a 12-second period, and the morning looks like it’s going to be glassy with a light offshore touch. Cap Sim (Essaouira) is a shallow reef, so it needs a bit of size and clean conditions to really shine. That Monday morning looks like your first real window, with around 2ft of swell but that long period squeezing some life into it. The energy is moderate, reading 254 in the combined swell energy, and with the wind off it, it’ll be tempting. The afternoon backs off a touch and goes cross-off, still okay, but the morning is the call.
After that, it’s back to the washing machine until the 17th. Thursday the 17th brings a fresh pulse of northwest swell, pushing 6ft, but the wind is fresh and it’s mostly cross-off, making it a bit lumpy. Still, there’s more energy in the water, with readings of 537 in the morning. The period is around 9 seconds, so it’s not the cleanest, but it’s surfable for the keen ones who don’t mind a fight.
The real standout in this whole stretch is Friday the 18th. The morning session is the one to circle on the calendar. We’ve got a moderate offshore breeze, a solid 5ft of west-northwest swell, and a 10-second period. The combined energy is pushing 713, which is a strong, healthy push. This is the kind of day Cap Sim was made for—clean walls, some push, and that offshore wind grooming the face. If you can only surf one day in the next two weeks, make it Friday morning the 18th. It’s not huge, but the quality is there.
The weekend after that falls apart a bit with strong cross-off winds and dropping swell. But don’t lose hope. The following Saturday, the 26th, is a bit of a dark horse. It’s over a week out, so treat it with caution, but the models are hinting at a proper pulse of northwest groundswell—6ft with a 14-second period. The combined energy reading is a massive 1523, the biggest in the whole forecast. That’s strong, powerful water. It’s going to be big and it’s going to be grunty. This one is for experienced surfers only; at that size and with that period, Cap Sim is a serious slab. The wind looks light and clean though, so if it holds, this could be the session of the fortnight. Just remember, it’s a long-range call, so keep your fingers crossed.
As for the water, it’s running at 64°, which is a solid 7° colder than usual for this time of year. That’s a big anomaly, so you’ll want the thick rubber, not the summer suit. That cold water, combined with the inconsistent pulses, means you’ve got to pick your moments.
Overall, the first half is a write-off. The second half has two clear windows: Friday the 18th for the reliable, clean, mid-sized session, and Saturday the 26th for the big, powerful, don’t-mess-this-up-if-it-comes-together session. Don’t be a hero on the small days, just wait for the right one.
Rusty.
Short Range ForecastMostly dry. Warm (max 35°C on Sun afternoon, min 24°C on Fri afternoon). Winds decreasing (strong winds from the N on Fri afternoon, calm by Sun morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Mon night, min 19°C on Wed night). Winds increasing (light winds from the NNW on Mon afternoon, strong winds from the N by Wed afternoon). | |||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||
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 8 | N 8 | N 7 | N 7 | N 7 | N 7 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 | NNW 10 | NW 12 | NW 11 | N 8 | NNW 9 | NNW 9 | NNW 10 |
Wave Graph | ||||||||||||||||||||
423 | 352 | 337 | 308 | 189 | 120 | 109 | 94 | 153 | 240 | 185 | 140 | 89 | 64 | 40 | 59 | 418 | 442 | 495 | 461 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off |
High Tide | 3:15AM2.87m | 3:29PM3.06m | 3:50AM2.85m | 4:05PM2.93m | 4:23AM2.75m | 4:40PM2.74m | 4:57AM2.61m | 5:15PM2.50m | 5:31AM2.43m | 5:51PM2.25m | 6:08AM2.23m | 6:35PM2.01m | ||||||||
Low Tide | 9:05PM-0.06m | 9:14AM0.04m | 9:38PM-0.01m | 9:49AM0.09m | 10:10PM0.11m | 10:23AM0.20m | 10:42PM0.29m | 10:58AM0.36m | 11:13PM0.49m | 11:34AM0.56m | 11:47PM0.71m | 12:16PM0.77m | 00:28AM0.92m | |||||||
— | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:24 | — | — | |
7:51 | — | — | 7:49 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:44 | — | — | 7:43 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 30 | 26 | 32 | 33 | 35 | 33 | 33 | 28 | 29 | 28 | 25 | 25 | 24 | 23 | 20 | 22 | 22 | 20 |
Feels °C | 20 | 23 | 28 | 24 | 30 | 32 | 32 | 30 | 30 | 28 | 27 | 26 | 23 | 23 | 21 | 19 | 17 | 19 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | — | NNW 11 | WNW 11 | WNW 10 | N 7 | N 7 | NW 9 | N 7 | N 7 | NW 12 | NW 11 | NW 11 | NW 10 | NNW 10 | NW 9 | NW 11 | NW 10 | WNW 10 | NW 12 | NNW 10 |
— | 88 | 12 | 20 | 189 | 120 | 21 | 94 | 77 | 240 | 185 | 140 | 89 | 64 | 40 | 59 | 51 | 67 | 175 | 461 | |
Swell 2 Height (m) Direction Period (s) | — | W 7 | — | N 10 | NW 10 | NW 9 | NW 16 | NW 14 | NW 12 | N 7 | N 7 | NNE 7 | WNW 8 | WNW 8 | NW 12 | WNW 8 | — | NW 13 | NW 10 | NW 12 |
— | 1 | — | 18 | 24 | 22 | 39 | 93 | 153 | 54 | 35 | 5 | 7 | 6 | 34 | 6 | — | 28 | 47 | 349 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | N 10 | N 9 | N 9 | NW 9 | NW 10 | NNE 7 | NNE 10 | — | NE 6 | WNW 12 | WNW 8 | — | — | — | — | — |
— | — | — | — | 17 | 15 | 14 | 20 | 24 | 5 | 9 | — | 2 | 15 | 7 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | N 7 | N 7 | N 8 | N 8 | — | — | N 7 | — | — | — | — | N 7 | N 6 | N 5 | N 6 | N 6 | N 8 | NNW 9 | NNW 9 | — |
423 | 352 | 337 | 308 | — | — | 109 | — | — | — | — | 33 | 38 | 69 | 86 | 125 | 418 | 442 | 495 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 631 | 61 | 61 | 62 | 61 | 0 | 0 | 0 | 0 | 0 | 61 | 105 | 407 | 105 | 92 | 684 | 92 | 92 | 117 | 0 |
Best forecast wave conditions in Central Morocco | ||||||||||||||||||||
Best forecast wave conditions in Morocco | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Cap Sim Surf forecast
The above surf forecast table for Cap Sim provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cap Sim can be found by selecting the local surf guide option on the grey menu. Our Cap Sim 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 (Cap Sim) 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 Cap Sim 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.
Cap Sim is 16 km (10 miles) from the city of Essaouira. If you plan a holiday in Central Morocco, look for hotels and other accommodation in Essaouira. Essaouira has rooms for a wide range of budgets as well as car hire and transport links.










