Surf Forecasts:
Castelejo surf forecast from 31 Aug 2026:
- Best quality surf: Friday 4 Sep, 7AM (local time) - 2ft (0.6m), 8s period, WNW swell with offshore winds.
- Most powerful swell: Tuesday 1 Sep, 7PM (local time) - 6ft (1.8m), 9s period, NW swell with 492 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 7AM (local time) - 2ft (0.6m), 8s period with WNW swell.
Best Forecast Surf Conditions for Castelejo this week:
The surf forecast for Castelejo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 04) at 7AM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.6m and 6s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Castelejo in the next 16 days are 1.8m 9s and forecast to arrive on Tuesday (Sep 01) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 6s period and expected on Friday (Sep 04) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Fri 4th Sep) | 2ft (0.6m) 8s |
| Best Surf | 7AM (Fri 4th Sep) | 2ft (0.6m) 8s |
| Most Powerful | 7PM (Tue 1st Sep) | 6ft (1.8m) 9s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what we’ve got coming down the line for our little corner of the coast.
Right off the bat, I gotta be straight with you – the next week and a half looks pretty grim. We’ve got a solid northwest swell rolling in, but the wind is just murdering it. For the first several days, starting Monday August 31, that northwest wind is howling at 22 mph, putting a nasty cross-onshore chop on everything. The water is sitting at 68°F, which is a bit colder than normal for this time of year – about 3°F off, feels like winter is hanging on. The combined energy of all swells directed here is around 470 (moderate) but with that wind, it’s just a lumpy mess. Poor surf conditions all the way through.
Tuesday September 1 and Wednesday September 2 are more of the same story. The swell drops a little, but the wind stays onshore and fresh. The energy drops into the 200 range, still moderate, but it’s not doing us any favours. Thursday September 3 finally sees the wind ease back to a light breeze, but the swell is down to 3ft and the energy is weak (83). Still, by Thursday afternoon it goes onshore and we get a tiny, weak wave. Not worth paddling out for.
Friday September 4 and Saturday September 5 are where things get a tiny bit interesting. The wind swings around to light cross-off and offshore directions. The swell is still small – around 3ft to 3ft from the NW, with a 9-second period, so it’s got a little bit of body. The combined energy is weak (85 to 125), but the water will be clean. You could get a few knee-to-waist high runners at Castelejo, but it’s surfable waves in very ordinary conditions. Don’t expect much.
Then we hit a dead zone. From Sunday September 6 right through to Tuesday September 15, the wind picks back up again – cross-onshore or onshore, fresh breezes, with the swell bouncing between 2ft and 5ft. The setup here is a beach and reef, and with that constant cross-onshore wind and lumpy conditions, this honestly looks more interesting for kite surfing than paddle surfing. The energy stays moderate for some of it (up to 292) but the quality is just poor.
The only real standout, if you can call it that, is the afternoon of Saturday September 5. The swell is 3ft from the northwest, period 9 seconds, with a light cross-offshore breeze from the SSW. The combined energy is 125 (weak), but it’s clean. The break is very consistent at Castelejo, and with weak energy and light wind, it’ll be a mellow, uncrowded session for beginners and longboarders. Just don’t expect any power.
There is a long gap of poor conditions from September 6 all the way to September 15, so don’t get your hopes up. The second week is slim pickings – small swell, windy, and lumpy. Not much to get excited about.
Keep your eyes on the forecast, because it tends not to stay this poor for long. But for now, this is a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Thu morning, min 17°C on Mon night). Winds decreasing (strong winds from the NNW on Mon night, light winds from the NNE by Wed night). | Days 5-7 Weather SummaryMostly dry. Warm (max 34°C on Thu night, min 23°C on Sun morning). Wind will be generally light. | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 | NNW 7 | NW 9 | NW 9 | NNW 7 | NNW 7 | NNW 8 | NNW 7 | NW 7 | NNW 7 | NNW 7 | WNW 8 | NW 8 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 6 |
Wave Graph | ||||||||||||||||||||
427 | 332 | 251 | 427 | 352 | 107 | 219 | 178 | 122 | 62 | 51 | 46 | 75 | 101 | 118 | 118 | 83 | 83 | 160 | 136 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross | cross | cross-off | cross-on | off | cross-off | cross-on | cross-on | on | cross-on |
High Tide | 5:05PM2.89m | 5:26AM2.71m | 5:43PM2.75m | 6:06AM2.60m | 6:27PM2.56m | 6:53AM2.45m | 7:22PM2.33m | 7:54AM2.29m | 8:37PM2.14m | 9:19AM2.20m | 10:17PM2.07m | 10:55AM2.27m | 11:47PM2.19m | |||||||
Low Tide | 11:14PM0.18m | 11:28AM0.27m | 11:51PM0.31m | 12:10PM0.41m | 00:34AM0.50m | 1:01PM0.59m | 1:28AM0.71m | 2:10PM0.77m | 2:45AM0.88m | 3:48PM0.84m | 4:26AM0.92m | 5:29PM0.73m | ||||||||
— | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | |
8:06 | — | — | 8:05 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 20 | 20 | 19 | 22 | 22 | 27 | 29 | 29 | 34 | 29 | 30 | 28 | 28 | 27 | 25 | 25 | 23 | 22 |
Feels °C | 15 | 13 | 15 | 15 | 14 | 19 | 19 | 24 | 26 | 26 | 30 | 29 | 29 | 29 | 26 | 26 | 24 | 23 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 10 | NW 9 | SW 15 | SW 14 | NW 8 | SW 15 | NNW 7 | NW 7 | NNW 7 | NNW 7 | WNW 8 | NW 8 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 11 |
33 | 222 | 251 | 8 | 8 | 95 | 9 | 178 | 122 | 62 | 51 | 46 | 75 | 101 | 118 | 118 | 83 | 83 | 160 | 121 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | — | SW 14 | NNW 9 | SW 15 | SW 14 | SE 6 | NW 9 | WNW 8 | NNW 6 | NW 8 | SE 6 | SE 6 | SE 6 | ESE 6 | NW 13 | NNW 12 | WNW 8 |
10 | 10 | 9 | — | 8 | 16 | 9 | 8 | 1 | 21 | 48 | 20 | 3 | 5 | 5 | 5 | 3 | 45 | 96 | 48 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 15 | — | SE 5 | SW 14 | ESE 7 | SE 6 | SE 6 | SW 13 | SW 13 | SW 12 | S 12 | NW 10 | ESE 6 | ESE 7 | SE 6 |
— | — | — | — | — | 8 | — | 1 | 8 | 5 | 5 | 6 | 7 | 7 | 6 | 3 | 4 | 4 | 5 | 6 | |
Wind waves Height (m) Direction Period (s) | NW 9 | NNW 7 | NNW 7 | NW 9 | NNW 7 | NNW 7 | NNW 8 | — | — | — | — | — | SE 4 | — | — | NW 5 | NNW 4 | NNW 5 | NW 6 | NW 6 |
427 | 332 | 154 | 427 | 352 | 107 | 219 | — | — | — | — | — | 8 | — | — | 7 | 5 | 34 | 36 | 136 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 65 | 260 | 65 | 609 | 46 | 9 | 181 | 23 | 9 | 9 | 9 | 9 | 0 | 9 | 0 | 0 | 9 | 9 | 20 | 65 |
Best forecast wave conditions in The Algarve | ||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||
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Information about the Castelejo Surf forecast
The above surf forecast table for Castelejo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Castelejo can be found by selecting the local surf guide option on the grey menu. Our Castelejo 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 (Castelejo) 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 Castelejo 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.
Castelejo is 25 km (16 miles) from Lagos. If you plan a holiday in The Algarve, look for hotels and other accommodation in Lagos. Lagos has rooms for a wide range of budgets as well as car hire and transport links.











