Surf Forecasts:
Cassis - Plage de l'Arène surf forecast from 18 Aug 2026:
- Most powerful swell: Tuesday 18 Aug, 5PM (local time) - 5.5ft (1.7m), 6s period, W swell with 212 kJ wave energy.
Best Forecast Surf Conditions for Cassis - Plage de l'Arène this week:
The most powerful waves expected at Cassis - Plage de l'Arène in the next 16 days are 1.7m 6s and forecast to arrive on Tuesday (Aug 18) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 6s period and expected on Monday (Aug 24) at 5PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Tue 18th Aug) | 5.5ft (1.7m) 6s |
Table - best surf conditions forecast for Cassis - Plage de l'Arène over the next 16 days.
The Lowdown
Alright, it's Rusty. Let's break down what's on offer at Cassis - Plage de l'Arène.
Honestly, the whole 16-day stretch is pretty much a dud for decent surf. That's the straight truth. We're staring at a two-week period of tiny, weak, and mostly messy conditions. With a big gap where there are zero real recommendations, and given how rarely this spot actually breaks, it's pretty normal to see a blank run like this.
Let's take it day by day, starting Tuesday, the 18th of August. The day starts with a messy 5.2ft swell out of the WNW, but it's short-period at 6 seconds with a strong 30 km/h cross-shore wind that's gonna trash it. The combined energy is weak at 160. The water is much warmer than normal for this time of year, sitting at 81.9°F, which is over 7°F above average – that's very unusual.
It doesn't improve. Through Wednesday and Thursday, the swell drops off completely, barely hitting 3ft. Winds stay onshore or cross-shore, keeping the surface all chunky and ugly. We get a brief glassy window on Saturday the 22nd, but the swell is a pathetic 2ft from the SW with zero power. It's flat.
The only half-interesting moment shows up Monday, the 24th of August. We get a bump in energy with a 4.3ft to 4.6ft WNW swell, still with that short 6-second period. The combined energy climbs into the moderate range (116 to 127). The wind turns offshore from the NE in the afternoon, cleaning things up for a bit. But the size is just too weak to have any real push, and it's still described as “very ordinary conditions”. It's barely rideable and nothing to get stoked about.
After that, it's back to flatness and onshore junk through the rest of the month and into September. No standout waves, no decent windows. For a reef spot that really needs that specific SW swell, we just aren't getting it.
This is one of those times where you stash the boards and just take a dip. If you're really itching to ride something on a board, the setup looks more interesting for kite surfing than paddle surfing with these small, clean chop days.
Short Range ForecastModerate rain (total 12mm), heaviest on Fri morning. Warm (max 33°C on Tue afternoon, min 25°C on Fri morning). Winds decreasing (fresh winds from the W on Tue afternoon, calm by Wed morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Fri night, min 24°C on Mon morning). Wind will be generally light. | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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) | W 6 | W 5 | WSW 5 | SW 5 | SW 4 | SW 4 | SSW 5 | SSW 7 | SSW 6 | SSW 6 | SW 7 | WNW 5 | NW 6 | WNW 4 | WNW 4 | W 6 | W 5 | WNW 5 | WNW 5 | W 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 134 | 52 | 27 | 11 | 8 | 9 | 33 | 75 | 52 | 40 | 29 | 13 | 76 | 24 | 33 | 39 | 66 | 87 | 105 | 74 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | glassy | on | cross-off | cross-off | cross-on | cross | on | cross-on | glassy | glassy | cross-on | glassy | glassy | on | cross-on | cross | cross-on | cross |
High Tide | 1:15AM0.19m | 2:27PM0.17m | 1:48AM0.16m | 3:54PM0.17m | 2:37AM0.15m | 5:37PM0.18m | 6:52PM0.20m | 5:54AM0.14m | 7:37PM0.21m | 6:54AM0.15m | 8:14PM0.23m | |||||||||
Low Tide | 7:11PM0.09m | 7:50AM0.07m | 8:18PM0.11m | 8:36AM0.07m | 10:02PM0.13m | 9:45AM0.08m | 00:25AM0.12m | 11:06AM0.07m | 1:35AM0.11m | 12:14PM0.06m | 2:12AM0.10m | 1:04PM0.05m | 2:41AM0.09m | |||||||
 |  | | | |  |  |  | | | | | | | | | | |  |  | |
 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — |
 | 8:36 | — | — | 8:35 | — | — | 8:32 | — | — | 8:31 | — | — | 8:30 | — | — | 8:29 | — | — | 8:27 | — |
mm | — | — | — | — | — | — | 2 | 1 | 9 | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 33 | 32 | 30 | 30 | 27 | 28 | 28 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 22 |
Feels °C | 30 | 28 | 30 | 28 | 30 | 31 | 29 | 29 | 27 | 26 | 29 | 27 | 27 | 27 | 28 | 27 | 27 | 27 | 25 | 19 |
Swell 1 Height (m) Direction Period (s) | — | — | WSW 5 | SW 5 | SW 4 | SW 4 | SSW 5 | SSW 7 | SSW 6 | SSW 6 | SW 7 | SW 6 | NW 5 | SW 7 | SW 6 | NW 4 | — | — | — | — |
| kJ | — | — | 26 | 11 | 8 | 9 | 33 | 75 | 52 | 40 | 29 | 13 | 38 | 2 | 2 | 1 | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | S 5 | W 4 | — | SSE 4 | W 4 | S 4 | SW 6 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 18 | 1 | — | 2 | 6 | 2 | 5 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SSE 4 | S 5 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 4 | 2 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 6 | W 5 | W 5 | WNW 4 | — | SE 3 | — | — | WNW 3 | WNW 4 | WNW 5 | WNW 5 | NW 6 | WNW 4 | WNW 4 | W 6 | W 5 | WNW 5 | WNW 5 | W 6 |
| kJ | 134 | 52 | 27 | 1 | — | 2 | — | — | 1 | 3 | 7 | 12 | 76 | 24 | 33 | 39 | 66 | 87 | 105 | 74 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1185 | 10 | 10 | 936 | 259 | 475 | 777 | 170 | 215 | 380 | 142 | 511 | 562 | 423 | 423 | 424 | 423 | 8 | 274 | 195 |
Best forecast wave conditions in Cote d'Azur | ||||||||||||||||||||
Best forecast wave conditions in France | ||||||||||||||||||||
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Information about the Cassis - Plage de l'Arène Surf forecast
The above surf forecast table for Cassis - Plage de l'Arène provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cassis - Plage de l'Arène can be found by selecting the local surf guide option on the grey menu. Our Cassis - Plage de l'Arène 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 (Cassis - Plage de l'Arène) 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 Cassis - Plage de l'Arène 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.
Cassis - Plage de l'Arène is 5 km (3 miles) from La Ciotat. If you plan a holiday in Cote d'Azur, look for hotels and other accommodation in La Ciotat. La Ciotat has rooms for a wide range of budgets as well as car hire and transport links.
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