Surf Forecasts:
Carcavelos surf forecast from 14 Aug 2026:
- Best quality surf: Saturday 15 Aug, 10AM (local time) - 7ft (2.2m), 8s period, NW swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 1AM (local time) - 8ft (2.4m), 8s period, NNW swell with 829 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 10AM (local time) - 7ft (2.2m), 8s period with NW 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 Saturday (Aug 15) at 10AM. The primary swell is predicted to be 2.2m and 8s period with a secondary swell of 0.1m and 18s. 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 2.4m 8s and forecast to arrive on Sunday (Aug 16) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Friday (Aug 14) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 15th Aug) | 7ft (2.2m) 8s |
| Best Surf | 10AM (Sat 15th Aug) | 7ft (2.2m) 8s |
| Most Powerful | 1AM (Sun 16th Aug) | 8ft (2.4m) 8s |
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 cookin’ for our stretch of coast at Carcavelos. The water temp is sittin' around 69°, which is bang on average for this time of year, so no surprises there.
Right off the bat, we’ve got a few days of nothing worth paddling out for. The first couple of days are a write-off, with small, weak swell and poor conditions. You’ll be staring at flat or messy lines. That’s the price of living here sometimes.
But hold on, because things start to get interesting on Saturday, August 15th. The swell is pumping up to 7 ft from the NW, with a short period of 8 seconds. The energy is moderate (579). The wind is a clean cross-off from the NNW, which should keep the faces tidy. The issue is this is getting a bit big for a beginner spot like Carcavelos; it’s pushing into that intermediate-to-expert zone. The combination of a clean offshore wind and a decent-sized NW swell makes this the most promising window in the near term. The crowd factor is "often," so expect plenty of company in the lineup.
Sunday morning, August 16th, is another standout. The swell drops slightly to 7 ft from the NNW, still a short 9-second period, but hold on – the wind swings around to a light east breeze, only 10 mph. That’s near glassy, and it’s a cross-off wind. The energy is strong (710). This is likely the cleanest, most fun session of this first week for the more experienced crew. Saturday and Sunday mornings are the ones to circle on the calendar.
Then we hit a dry spell. From Sunday afternoon right through to the end of the following week, the conditions turn sour. The wind swings onshore or cross-onshore, the swell becomes messy, and the scores are all zeros. There’s a long gap of poor surf that stretches from the afternoon of the 16th all the way through to the end of the week. It’s a frustrating stretch of onshore wind and chop, with a few marginal moments but nothing worth a full recommendation.
However, looking further ahead to Friday, August 28th, the charts start to rumble again. The swell is jumping up to 7 ft from the NW, but the period lengthens to 11 seconds – proper groundswell energy. The combined energy is very strong (2123). The wind is a clean cross-off from the NNW. This is a big, powerful swell, and at this size, it’s definitely for experts only. The same goes for Saturday, August 29th, when the swell peaks at 12 ft from the NNW with a very long 14-second period, creating massive energy (4308). That’s a serious, heavy groundswell that will be breaking straight and fast at the beach. These are long-range standouts, so keep your fingers crossed, but the potential is huge for the brave ones.
So, to wrap it up: Don’t bother until Saturday morning, August 15th. That morning and Sunday morning, the 16th, are your best early bets. Then a long, dry run of cruddy surf. The real fireworks are forecast for the end of the month, August 28th and 29th, but that’s one for the big-wave crew only.
Stay stoked, and keep your eye on the horizon.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sun afternoon, min 20°C on Fri night). Winds decreasing (fresh winds from the NNW on Fri afternoon, calm by Sun morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Mon morning, min 20°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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 9 | WNW 9 | NNW 6 | NW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | WNW 9 | WNW 8 | NW 6 | NW 6 |
Wave Graph | |||||||||||||||||||||
119 | 127 | 223 | 573 | 735 | 829 | 700 | 432 | 284 | 370 | 306 | 212 | 256 | 256 | 172 | 78 | 54 | 32 | 40 | 106 | 135 | |
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 | cross-off | cross-off | cross | cross-off | cross | cross-on | cross | cross-on | on | glassy | cross-on | on | cross | cross | cross | cross-off |
High Tide | 4:33PM3.16m | 4:57AM2.81m | 5:13PM3.05m | 5:36AM2.72m | 5:52PM2.86m | 6:14AM2.59m | 6:31PM2.62m | 6:52AM2.42m | 7:12PM2.36m | 7:35AM2.24m | 7:59PM2.11m | 8:27AM2.07m | 9:03PM1.91m | ||||||||
Low Tide | 10:16AM0.03m | 10:49PM-0.07m | 10:56AM0.08m | 11:26PM0.05m | 11:34AM0.19m | 00:02AM0.23m | 12:13PM0.36m | 00:38AM0.45m | 12:54PM0.57m | 1:16AM0.67m | 1:40PM0.78m | 2:01AM0.89m | 2:39PM0.97m | 3:04AM1.06m | |||||||
6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | |
— | 8:32 | — | — | 8:31 | — | — | 8:30 | — | — | 8:29 | — | — | 8:28 | — | — | 8:27 | — | — | 8:24 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 23 | 21 | 23 | 24 | 21 | 26 | 28 | 26 | 28 | 28 | 27 | 24 | 24 | 22 | 23 | 24 | 22 | 23 | 23 | 21 |
Feels °C | 23 | 20 | 19 | 21 | 22 | 20 | 28 | 27 | 25 | 28 | 29 | 30 | 26 | 24 | 23 | 23 | 25 | 23 | 22 | 22 | 20 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 9 | — | S 18 | SW 18 | SW 17 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 6 | NW 6 | NNW 12 | WNW 9 |
119 | 127 | — | 6 | 12 | 11 | 700 | 432 | 284 | 370 | 306 | 212 | 256 | 256 | 172 | 78 | 54 | 23 | 26 | 13 | 25 | |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | — | — | — | S 17 | SW 16 | SW 16 | SW 15 | SW 15 | W 9 | SSW 16 | WNW 8 | SW 16 | SW 3 | SSW 14 | SSW 14 | WNW 9 | WNW 8 | SSW 13 | NW 10 |
3 | 3 | — | — | — | 5 | 10 | 11 | 9 | 8 | 2 | 26 | 6 | 38 | 3 | 20 | 20 | 32 | 40 | 17 | 25 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 18 | SW 14 | W 8 | SSW 16 | WNW 8 | WNW 8 | WNW 8 | WNW 10 | SSW 13 | SSW 13 | SW 16 | SSW 15 |
— | — | — | — | — | — | — | — | — | 12 | 8 | 5 | 24 | 6 | 7 | 12 | 10 | 17 | 17 | 10 | 21 | |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 6 | NNW 6 | NW 8 | NNW 8 | NNW 8 | — | — | — | — | — | — | S 3 | S 3 | — | S 3 | SSW 4 | — | — | NW 6 | NW 6 |
62 | 104 | 223 | 573 | 735 | 829 | — | — | — | — | — | — | 1 | 1 | — | 3 | 4 | — | — | 106 | 135 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 402 | 202 | 96 | 442 | 57 | 5 | 164 | 0 | 5 | 76 | 108 | 14 | 297 | 0 | 14 | 108 | 4 | 3 | 690 | 255 |
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.











