Surf Forecasts:
Carcavelos surf forecast from 31 Aug 2026:
- Best quality surf: Saturday 5 Sep, 10PM (local time) - 4.5ft (1.3m), 13s period, NW swell with offshore winds.
- Most powerful swell: Monday 31 Aug, 4PM (local time) - 6ft (1.9m), 10s period, NW swell with 725 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 1PM (local time) - 5ft (1.5m), 7s 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 Wednesday (Sep 02) at 1PM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 0.6m and 8s. Another secondary swell of 0.2m and 16s is also forecast. 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 1.9m 10s and forecast to arrive on Monday (Aug 31) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Tuesday (Sep 01) at 1AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Wed 2nd Sep) | 5ft (1.5m) 7s |
| Best Surf | 10PM (Sat 5th Sep) | 4.5ft (1.3m) 13s |
| Most Powerful | 4PM (Mon 31st Aug) | 6ft (1.9m) 10s |
Table - best surf conditions forecast for Carcavelos over the next 16 days.
The Lowdown
Alright, grab your board, let's talk about what's on the menu for Carcavelos over the next couple of weeks.
It's a bit of a slow start, honestly. The first few days are looking pretty ordinary. We've got some swell from the NW pushing through, but it's bumpy and messy. The wind is blowing cross-off most of the time, which keeps the surface pretty clean, but the waves themselves are just lacking that punch. The water temp is sitting right around 68°, which is pretty much normal for this time of year. Nothing to get too excited about just yet.
Monday the 31st has a clean 4ft NW swell, but the wave energy is weak (212) and the conditions are just poor. Tuesday and Wednesday are similar, with a bit more size but the same story – marginal at best.
Now, keep your eyes peeled for Saturday the 5th of September. The morning is where it's at. We've got a clean 3ft swell from the WNW, but the real kicker is the offshore wind from the NE. It's light and clean, and the energy is picking up to 265. It's not huge, but it's going to be clean and fun, a proper little window of good surf.
Then Sunday the 6th of September morning is a real standout. The wind goes glassy from the south, dead calm, and we've got a nice 4ft NW groundswell rolling in with a long 12-second period. The energy is solid at 537. This is going to be clean, lined-up, and just beautiful. Get on it early because the wind shifts onshore in the afternoon.
We get another lovely morning on Monday the 7th, with a clean 2ft WNW swell and a long 14-second period, making for easy paddling and good shape. The energy is moderate at 340.
After that, the surf fades a bit for a few days. There's a real dry spell from the 8th through the 10th, with small, weak waves. Nothing to write home about.
But hold on, because the real gem is further out. On Monday the 14th of September, the afternoon brings a powerful 5ft NW swell with a crazy-long 17-second period. The energy is pumping at 1277. This is serious groundswell. It's going to be clean with a light offshore wind. This is for experienced surfers who know how to handle a heavy, long-period swell.
Then Tuesday the 15th of September morning is a beast. A 7ft WNW swell with a 14-second period, clean offshore wind from the ENE, and the energy is a massive 1625. This is big, powerful, and well overhead. This is expert territory only. It's going to be a proper session for those who can handle it.
So, the best of the lot is the glassy Sunday the 6th of September morning for a clean, fun session, and the expert-level, big swell on the 15th for the adrenaline junkies. The rest of the time is picking through the leftovers.
Stay stoked, and I'll see you in the water.
Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Wed afternoon, min 17°C on Tue night). Winds decreasing (fresh winds from the NNW on Mon afternoon, light winds from the N by Wed night). | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 36°C on Sat morning, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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) | NW 9 | NW 10 | NW 10 | NW 9 | NNW 9 | NNW 9 | NNW 7 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 6 | WNW 8 | WNW 8 | WNW 9 | WNW 9 | NW 15 | NW 13 | NW 12 | NW 11 | NW 10 |
Wave Graph | |||||||||||||||||||||
179 | 725 | 273 | 528 | 523 | 512 | 218 | 256 | 172 | 132 | 99 | 70 | 58 | 44 | 106 | 106 | 485 | 663 | 494 | 429 | 184 | |
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-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross | cross-off | glassy | cross-on | cross-off |
High Tide | 5:15PM2.85m | 5:36AM2.68m | 5:53PM2.72m | 6:16AM2.57m | 6:37PM2.53m | 7:03AM2.43m | 7:31PM2.31m | 8:04AM2.27m | 8:47PM2.12m | 9:28AM2.18m | 10:25PM2.05m | 11:04AM2.24m | 11:56PM2.16m | ||||||||
Low Tide | 11:01AM0.18m | 11:25PM0.17m | 11:38AM0.27m | 00:02AM0.30m | 12:20PM0.40m | 00:45AM0.49m | 1:12PM0.58m | 1:39AM0.69m | 2:21PM0.75m | 2:55AM0.86m | 3:58PM0.82m | 4:35AM0.90m | 5:38PM0.71m | ||||||||
7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | |
— | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:05 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 22 | 22 | 18 | 22 | 23 | 18 | 24 | 25 | 21 | 28 | 29 | 25 | 31 | 32 | 27 | 36 | 34 | 31 | 29 | 29 | 29 |
Feels °C | 18 | 17 | 14 | 18 | 19 | 14 | 24 | 23 | 19 | 26 | 26 | 23 | 28 | 29 | 24 | 33 | 30 | 27 | 30 | 28 | 29 |
Swell 1 Height (m) Direction Period (s) | NW 9 | SW 16 | NW 10 | SSW 15 | SSW 15 | SSW 14 | NW 8 | SSW 16 | SSW 15 | NNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | NNW 6 | NW 15 | NW 13 | NW 12 | NW 11 | NW 10 |
179 | 11 | 273 | 23 | 22 | 21 | 68 | 24 | 21 | 132 | 47 | 48 | 58 | 44 | 106 | 57 | 485 | 663 | 494 | 429 | 184 | |
Swell 2 Height (m) Direction Period (s) | W 11 | S 11 | SW 16 | — | — | — | SSW 15 | — | NW 10 | NW 9 | SSW 14 | SSW 14 | SW 13 | WNW 10 | SW 13 | WNW 9 | NNW 7 | NNW 7 | N 6 | S 11 | WNW 9 |
21 | 2 | 10 | — | — | — | 23 | — | 4 | 21 | 20 | 19 | 7 | 39 | 7 | 106 | 84 | 69 | 40 | 3 | 26 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | — | S 10 | — | — | — | — | — | W 10 | SSW 14 | — | N 9 | NW 8 | SW 13 | — | NW 17 | WNW 9 | WNW 8 | S 12 | S 11 | NNW 6 |
12 | — | 2 | — | — | — | — | — | 2 | 20 | — | 2 | 3 | 7 | — | 102 | 94 | 40 | 3 | 3 | 7 | |
Wind waves Height (m) Direction Period (s) | NNW 5 | NW 10 | NNW 6 | NW 9 | NNW 9 | NNW 9 | NNW 7 | NNW 8 | NNW 7 | — | NNW 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | — | — | — | — | — | — |
91 | 725 | 164 | 528 | 523 | 512 | 218 | 256 | 172 | — | 99 | 70 | 45 | 47 | 69 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 202 | 202 | 1 | 202 | 202 | 96 | 3 | 187 | 0 | 0 | 5 | 5 | 0 | 5 | 3 | 0 | 154 | 0 | 0 | 154 | 0 |
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.











