
Surf Forecasts:
Carcavelos surf forecast from 9 Aug 2026:
- Best quality surf: Saturday 15 Aug, 4AM (local time) - 7ft (2.2m), 7s period, NNW swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 7AM (local time) - 10ft (3.0m), 9s period, NNW swell with 1,183 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 10AM (local time) - 3ft (0.9m), 7s period with WNW swell.
Best Forecast Surf Conditions for Carcavelos this week:
The surf forecast for Carcavelos over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 09) at 10AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m and 11s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Carcavelos in the next 16 days are 3.0m 9s and forecast to arrive on Sunday (Aug 16) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Thursday (Aug 13) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 9th Aug) | 3ft (0.9m) 7s |
| Best Surf | 4AM (Sat 15th Aug) | 7ft (2.2m) 7s |
| Most Powerful | 7AM (Sun 16th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Carcavelos over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's coming down the line for Carcavelos over the next couple of weeks.
Right off the bat, we've got a bit of a quiet spell. For the first week, from August 9th to the 15th, it's pretty grim. The swell is small and choppy, mostly under 5 feet, and the wind is a constant cross or cross-offshore breeze that's just messing up the surface. The wave energy is weak to moderate (132 to 290), and the conditions are just not clean for a decent paddle. We're looking at a real flat spell with no real standout surf.
Now, hold on to your boards, because things start to look up from Sunday the 16th. The morning shows a bit of life with a 5ft swell from the NW, but it's still a bit short period at 7 seconds. The real firecracker is Monday the 17th of August. The morning brings a solid 7ft swell from the NNW, with a period of 9 seconds, and the wave energy is properly pumping at 661. The wind is a light breeze from the north, making for clean conditions. The afternoon session is even better with glassy conditions and the same 7ft swell. Now, this is a big one – over 7ft, and at Carcavelos, that's expert territory. It's a beach break, and long-period groundswell like this can make it dumpy and close out, but the energy is undeniable. The forecast is calling it "too big for this break," so if you're not a seasoned surfer, this is a spectator day. For the experts, this is the best on offer.
The following morning, Tuesday the 18th, is still a strong option. The swell drops to 6ft, but the wind turns offshore from the NNE, and the energy is still very strong at 539. The conditions are clean, and this is a much more manageable size for a good session. That Tuesday morning is your standout for a fun, powerful surf without the absolute monster size of Monday.
After that, the swell fades through the rest of the week, with Wednesday the 19th offering small, ordinary waves and the wind picking up again. The last week of the forecast looks like a return to the small, weak, and windy conditions we saw at the start.
So, to sum it up: the first week is a write-off. The only real standout is the 17th and 18th of August. Monday the 17th is for the big-wave chargers and experts only, with glassy conditions and a big swell. Tuesday the 18th is your best bet for a powerful, clean paddle for the more experienced surfer.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Sun morning, min 19°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Thu morning, min 19°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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) | WNW 7 | WNW 7 | WNW 7 | NW 8 | NW 8 | NNW 7 | NW 12 | NW 12 | W 10 | WNW 9 | WNW 10 | WNW 9 | WNW 9 | W 9 | WNW 10 | NNW 6 | NNW 6 | NNW 7 | NNW 8 | NNW 8 | NNW 8 |
Wave Graph | |||||||||||||||||||||
86 | 91 | 94 | 101 | 125 | 86 | 39 | 40 | 71 | 118 | 158 | 144 | 147 | 106 | 169 | 161 | 297 | 407 | 705 | 723 | 919 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 12:25PM2.42m | 1:04AM2.38m | 1:28PM2.66m | 2:02AM2.56m | 2:21PM2.89m | 2:51AM2.71m | 3:08PM3.07m | 3:36AM2.81m | 3:51PM3.16m | 4:18AM2.84m | 4:33PM3.16m | 4:57AM2.81m | 5:13PM3.05m | ||||||||
Low Tide | 6:49PM0.52m | 7:10AM0.53m | 7:50PM0.29m | 8:05AM0.34m | 8:41PM0.08m | 8:52AM0.17m | 9:27PM-0.05m | 9:35AM0.07m | 10:09PM-0.10m | 10:16AM0.03m | 10:49PM-0.07m | 10:56AM0.08m | 11:26PM0.05m | ||||||||
6:45 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | |
— | 8:38 | — | — | 8:37 | — | — | 8:37 | — | — | 8:36 | — | — | 8:35 | — | — | 8:32 | — | — | 8:31 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 23 | 21 | 24 | 24 | 20 | 24 | 24 | 20 | 25 | 25 | 21 | 26 | 26 | 21 | 24 | 24 | 20 | 23 | 23 | 20 |
Feels °C | 23 | 21 | 21 | 22 | 22 | 19 | 22 | 21 | 18 | 23 | 23 | 19 | 23 | 23 | 18 | 21 | 20 | 17 | 20 | 20 | 17 |
Swell 1 Height (m) Direction Period (s) | WNW 7 | NW 10 | WNW 7 | NW 8 | W 11 | W 6 | NW 12 | WNW 11 | W 10 | WNW 9 | WNW 10 | WNW 9 | WNW 9 | W 9 | WNW 10 | WNW 9 | S 12 | — | S 18 | SW 18 | SW 17 |
86 | 50 | 94 | 101 | 9 | 6 | 39 | 40 | 71 | 118 | 154 | 144 | 147 | 106 | 169 | 133 | 3 | — | 6 | 12 | 11 | |
Swell 2 Height (m) Direction Period (s) | NW 11 | S 11 | NW 10 | W 7 | S 12 | NNW 10 | WNW 10 | NW 12 | NNW 10 | NNW 10 | — | — | WNW 12 | WNW 11 | — | S 12 | — | — | — | — | — |
42 | 2 | 44 | 14 | 3 | 10 | 19 | 35 | 40 | 35 | — | — | 15 | 69 | — | 3 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | N 7 | — | N 7 | S 12 | — | WNW 10 | NNW 9 | S 11 | — | — | — | — | S 13 | S 13 | — | — | — | — | — | — | — |
4 | — | 1 | 3 | — | 10 | 8 | 2 | — | — | — | — | 3 | 3 | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | WNW 7 | — | NW 7 | NW 8 | NNW 7 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 9 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 7 | NNW 8 | NNW 8 | NNW 8 |
— | 91 | — | 54 | 125 | 86 | 29 | 42 | 46 | 36 | 158 | 49 | 49 | 67 | 91 | 161 | 297 | 407 | 705 | 723 | 919 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 1 | 0 | 5 | 440 | 90 | 0 | 434 | 5 | 0 | 1 | 1 | 1 | 374 | 1 | 5 | 578 | 90 | 5 | 434 |
Best forecast wave conditions in Lisboa | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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Information about the Carcavelos Surf forecast
The above surf forecast table for Carcavelos provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Carcavelos can be found by selecting the local surf guide option on the grey menu. Our Carcavelos 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 (Carcavelos) 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 Carcavelos 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.
Carcavelos is 1 km (1 miles) from Carcavelos. If you plan a holiday in Lisboa, look for hotels and other accommodation in Carcavelos. Carcavelos has rooms for a wide range of budgets as well as car hire and transport links.











