Surf Forecasts:
Carcavelos surf forecast from 17 Aug 2026:
- Best quality surf: Friday 21 Aug, 1PM (local time) - 7ft (2.1m), 8s period, NNW swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 7AM (local time) - 7ft (2.1m), 8s period, NNW swell with 560 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 4AM (local time) - 5ft (1.6m), 8s period with NNW 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 Monday (Aug 17) at 4AM. The primary swell is predicted to be 1.6m 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 Carcavelos in the next 16 days are 2.1m 8s and forecast to arrive on Sunday (Aug 23) at 7AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Thursday (Aug 20) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Mon 17th Aug) | 5ft (1.6m) 8s |
| Best Surf | 1PM (Fri 21st Aug) | 7ft (2.1m) 8s |
| Most Powerful | 7AM (Sun 23rd Aug) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Carcavelos over the next 16 days.
The Lowdown
Alright, this is Rusty checking in on the surf outlook for the Lisbon area.
Alright, let’s be real with you. The next 16 days are looking pretty grim around here. We’ve got a long stretch of poor surf conditions, with only a few very brief windows that might be worth a look. The water temperature at Carcavelos is sitting at 68°, which is close to normal for this time of year, so at least you won't be freezing.
The only real standout in this whole period is a brief window early on. Monday morning, the 17th of August, we get a bit of a break. The swell is 6 ft from the NNW, but the big news is the wind. We’re talking a glassy, 3 mph offshore from the SE. That’s clean. The period is a short 8 seconds, so it won’t have much punch, but for a beginner-friendly spot like Carcavelos, it’s the cleanest you’ll see. The combined swell energy is moderate at 364.
After that, it’s a wasteland. The wind goes onshore or cross-shore, the swell drops, and the quality tanks. There’s a bit of a bump in size on the 21st of August (Friday) with a 10-second period, but the wind is too strong from the NNW, making it marginal at best. The 30th of August has some size again, but it's a cross-shore chop.
Honestly, for the next two weeks, if you want to paddle out, that Monday morning is your only real shot. The rest of the time, the conditions are just poor. The wind just doesn’t play ball for us.
- Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Mon morning, min 20°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Thu morning, min 19°C on Wed night). Winds increasing (light winds from the NNW on Wed night, fresh winds from the NNW by Thu afternoon). | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 | NNW 7 | WNW 9 | WNW 9 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 8 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 344 | 251 | 231 | 291 | 250 | 201 | 123 | 125 | 62 | 62 | 44 | 316 | 439 | 531 | 405 | 483 | 525 | 445 | 560 | 435 | 335 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-on | on | glassy | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross | cross | cross-on |
High Tide | 6:14AM2.59m | 6:31PM2.62m | 6:52AM2.42m | 7:12PM2.36m | 7:35AM2.24m | 7:59PM2.11m | 8:27AM2.07m | 9:03PM1.91m | 9:42AM1.96m | 10:34PM1.82m | 11:14AM1.96m | 00:03AM1.88m | 12:28PM2.09m | 1:03AM2.02m | |||||||
Low Tide | 12:13PM0.36m | 00:38AM0.45m | 12:54PM0.57m | 1:16AM0.67m | 1:40PM0.78m | 2:01AM0.89m | 2:39PM0.97m | 3:04AM1.06m | 4:08PM1.07m | 4:38AM1.12m | 5:47PM1.03m | 6:06AM1.04m | 6:54PM0.89m | ||||||||
 | |  | | | | | | |  | | | | | | | |  |  | |  | |
 | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — |
 | — | 8:29 | — | — | 8:28 | — | — | 8:27 | — | — | 8:24 | — | — | 8:23 | — | — | 8:22 | — | — | 8:21 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 | 3 |
Temp °C | 27 | 25 | 23 | 23 | 23 | 21 | 23 | 23 | 21 | 23 | 22 | 19 | 21 | 21 | 19 | 21 | 21 | 20 | 18 | 20 | 20 |
Feels °C | 27 | 24 | 24 | 23 | 22 | 22 | 23 | 23 | 21 | 22 | 19 | 15 | 17 | 17 | 17 | 18 | 18 | 19 | 18 | 18 | 20 |
Swell 1 Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | WNW 9 | WNW 9 | NW 12 | NW 11 | WNW 8 | W 8 | WNW 10 | W 9 | WNW 9 | W 8 | WNW 8 | NNW 8 |
| kJ | 344 | 251 | 231 | 291 | 250 | 201 | 123 | 125 | 62 | 62 | 44 | 69 | 172 | 24 | 36 | 34 | 57 | 26 | 13 | 23 | 335 |
Swell 2 Height (m) Direction Period (s) | SW 15 | W 9 | W 8 | W 8 | SW 16 | WNW 8 | WNW 8 | WNW 10 | WNW 9 | SSW 13 | NW 11 | WNW 9 | WNW 9 | SSW 14 | WNW 11 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | WNW 7 |
| kJ | 8 | 6 | 5 | 4 | 38 | 13 | 12 | 20 | 50 | 17 | 19 | 27 | 25 | 21 | 38 | 20 | 20 | 19 | 18 | 17 | 16 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 15 | SSW 16 | SW 14 | W 8 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | NW 12 | SSW 13 | SSW 15 | SSW 15 | W 12 | SSW 13 | — | — | SSW 14 | — | — | SSW 13 |
| kJ | 12 | 9 | 26 | 7 | 10 | 21 | 20 | 20 | 17 | 6 | 17 | 21 | 21 | 11 | 18 | — | — | 19 | — | — | 17 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NNW 6 | NNW 6 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 8 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | WNW 7 |
| kJ | — | — | — | — | — | — | — | — | — | 40 | 97 | 316 | 439 | 531 | 405 | 483 | 525 | 445 | 560 | 435 | 40 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 72 | 37 | 14 | 547 | 0 | 14 | 189 | 0 | 0 | 463 | 297 | 189 | 189 | 96 | 90 | 188 | 0 | 6 | 28 | 48 |
Best forecast wave conditions in Lisboa | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Carcavelos 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 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.
Nearest