Surf Forecasts:
Cap Sim surf forecast from 18 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 10PM (local time) - 3ft (0.9m), 8s period, NNW swell with offshore winds.
- Most powerful swell: Saturday 22 Aug, 1PM (local time) - 5.5ft (1.7m), 11s period, NNW swell with 711 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 10PM (local time) - 3ft (0.9m), 8s period with NNW 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 Tuesday (Aug 18) at 10PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.2m and 8s. 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 11s and forecast to arrive on Saturday (Aug 22) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (+01) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 18th Aug) | 3ft (0.9m) 8s |
| Best Surf | 10PM (Tue 18th Aug) | 3ft (0.9m) 8s |
| Most Powerful | 1PM (Sat 22nd Aug) | 5.5ft (1.7m) 11s |
Table - best surf conditions forecast for Cap Sim over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s chew the fat on Cap Sim for the next couple weeks. I gotta level with you – it’s a tough run of surf. Lots of wind, lots of messy conditions. Don’t expect to just roll up and score.
The one real bright spot is Tuesday, August 18, in the morning. The wind goes glassy out of the north at just 3 mph, and we’ve got a clean 3ft swell from the NNW. The water is 64°F, and that is a very unusual 7°F colder than average for this time of year, so bring a thick suit. The combined energy is moderate (140), and that glassy surface is about as clean as it gets. It’s not big, but it’ll be fun.
From there, the wind cranks up and doesn’t quit. Wednesday and Thursday mornings have some offshore breeze, but the swell drops to 3ft, and the energy is weak to moderate (99–109). By Friday and Saturday, the wind is howling at 19-25 mph, and while there’s more size on Saturday (6ft to 6ft), the cross-off wind ruins it. Sunday, August 23 morning sees a jump to 6ft from the north with a fresh offshore wind, but the period is short at 8 seconds, and the combined energy is strong (421). It’ll be lumpy and tough to enjoy.
The middle of the following week is a bust. Monday, August 25 and Wednesday, August 27 mornings have offshore wind but the swell drops to 0.3ft – barely a ripple. The wind is gale-force, so don’t bother.
Looking out to the weekend of August 29-30, we see more size. Saturday, August 29 morning has 5ft from the NNW with a 10-second period and strong offshore wind. The energy is very strong (500), but the wind is strong too (25 mph), making it a battle. Sunday, August 30 morning is smaller at 4ft but cleaner offshore at 19 mph, with a nice long 10-second period. That one has potential for a few clean waves if the wind eases off.
For the last few days into September, the swell stays around 4ft to 6ft but the wind never really lays down. It’s mostly cross-off and the setup looks more interesting for kite surfing than paddle surfing.
Honestly, if you’re after a paddle, Tuesday morning is your best bet. It’s clean, glassy, and just a fun little wave. The later session on Sunday, August 30 morning is the other one to keep an eye on. The rest is either too windy, too small, or both. Stay patient.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Tue morning, min 20°C on Wed night). Winds increasing (calm on Tue morning, fresh winds from the N by Thu afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Fri morning, min 19°C on Sat night). Mainly strong winds. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NW 6 | NNW 7 | NNW 7 | NNW 8 | N 7 | NNW 6 | N 7 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 133 | 144 | 116 | 92 | 116 | 94 | 87 | 79 | 58 | 105 | 141 | 438 | 311 | 303 | 368 | 381 | 652 | 623 | 540 | 597 | 408 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | off | cross-off | off | off | cross-off | off |
High Tide | 6:34PM2.33m | 6:58AM2.20m | 7:22PM2.07m | 7:51AM2.03m | 8:29PM1.87m | 9:09AM1.92m | 10:03PM1.79m | 10:43AM1.93m | 11:31PM1.86m | 11:55AM2.07m | 00:28AM2.01m | 12:45PM2.25m | 1:10AM2.18m | ||||||||
Low Tide | 12:14PM0.58m | 00:37AM0.69m | 1:00PM0.79m | 1:22AM0.90m | 2:01PM0.97m | 2:27AM1.06m | 3:33PM1.07m | 4:06AM1.11m | 5:14PM1.02m | 5:33AM1.02m | 6:19PM0.87m | 6:28AM0.86m | 7:02PM0.69m | ||||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — |
 | — | 8:19 | — | — | 8:17 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:13 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 23 | 22 | 23 | 23 | 22 | 23 | 23 | 21 | 24 | 23 | 21 | 23 | 23 | 20 | 24 | 23 | 20 | 24 | 23 | 20 |
Feels °C | 23 | 23 | 24 | 23 | 23 | 23 | 22 | 22 | 19 | 21 | 20 | 18 | 19 | 17 | 15 | 18 | 17 | 14 | 16 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | WNW 10 | NW 6 | NW 9 | WNW 9 | NNW 13 | NNW 11 | — | NNW 10 | NNW 11 | — | W 9 | — | — | W 8 |
| kJ | 133 | 144 | 116 | 92 | 116 | 94 | 87 | 36 | 58 | 20 | 15 | 16 | 71 | — | 56 | 40 | — | 6 | — | — | 1 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | NW 10 | — | WNW 9 | NW 12 | NW 11 | — | — | — | NNW 12 | — | — | — | — | — | — |
| kJ | 7 | 6 | 6 | 7 | 14 | 13 | 16 | — | 32 | 6 | 5 | — | — | — | 56 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | NW 11 | WNW 8 | — | N 14 | — | W 12 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 5 | 6 | — | 4 | — | 3 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNW 7 | N 7 | NNW 7 | NNW 7 | NNW 8 | N 7 | NNW 6 | N 7 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 |
| kJ | — | — | — | — | — | — | — | 79 | 49 | 105 | 141 | 438 | 311 | 303 | 368 | 381 | 652 | 623 | 540 | 597 | 408 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 422 | 0 | 85 | 680 | 0 | 0 | 669 | 92 | 92 | 680 | 92 | 62 | 669 | 61 | 85 | 710 | 92 | 92 | 760 | 61 |
Best forecast wave conditions in Central Morocco | |||||||||||||||||||||
Best forecast wave conditions in Morocco | |||||||||||||||||||||
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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.
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