Surf Forecasts:
Castelejo surf forecast from 8 Sep 2026:
- Best quality surf: Friday 11 Sep, 10AM (local time) - 4.5ft (1.3m), 8s period, NNW swell with cross-offshore winds.
- Most powerful swell: Sunday 13 Sep, 10PM (local time) - 4.5ft (1.3m), 12s period, NW swell with 465 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 10AM (local time) - 4.5ft (1.3m), 8s period with NNW 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 11) at 10AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.4m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Castelejo in the next 16 days are 1.3m 12s and forecast to arrive on Sunday (Sep 13) at 10PM. 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 8s period and expected on Sunday (Sep 13) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Fri 11th Sep) | 4.5ft (1.3m) 8s |
| Best Surf | 10AM (Fri 11th Sep) | 4.5ft (1.3m) 8s |
| Most Powerful | 10PM (Sun 13th Sep) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’ll be straight with you – this 16-day window for Castelejo is a real mixed bag, and honestly, it’s mostly a long wait for a few clean windows. The first week is dominated by strong onshore winds and lumpy, choppy conditions, so you’ll be sitting on the beach for a while. There’s a gap of several days with no decent surf on offer right from the start.
The first real glimmer comes on Friday morning, 11th September. That’s your standout. We’ve got a clean 4ft swell from the NNW, with a light ENE cross-offshore breeze at just 3 mph. The water is a bit colder than normal for this time of year, at 68°F, and the combined swell energy is moderate (240). The period is a short 8 seconds, so it’s a windswell, but with those clean conditions and a very consistent break, it’s your best chance for a decent paddle. Crowds are possible here, so get in early.
Then Sunday, 13th September, through to Monday, 14th September, offers a few more windows. Sunday morning has a clean 2ft swell from the NW with a long 14-second period and a cross-offshore breeze, giving a combined energy of 230. That period is long enough to suggest some proper shape, though the size is small. By Sunday afternoon and into Monday, the swell picks up to 4ft from the NW, with periods around 12-13 seconds and clean cross-offshore winds. It’s marginal, but it’s surfable. Monday afternoon sees a moderate offshore breeze from the ESE, making for clean conditions on a 3ft NW swell.
After that, it’s back to onshore winds and poor conditions for the rest of the second week. There’s a pulse of bigger swell around 18th and 19th September, with 7ft and 6ft from the NW, but it’s all cross-on or onshore winds, so it’ll be a lumpy, choppy mess – more suited to kite surfing than a proper paddle. The energy will be strong (598 and 426), but the quality is shot.
So, to wrap it up: if you’ve got a window, make it Friday morning, 11th September, for the cleanest conditions. Sunday and Monday are your next best, but keep expectations low. The rest of the period is a write-off, with lots of poor conditions and no real standouts. Forecasts can change, but as it stands, don’t hold your breath.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Thu morning, min 18°C on Wed night). Winds decreasing (strong winds from the NNW on Wed night, calm by Fri morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Sun morning, min 21°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 10 | NW 9 | NW 8 | NW 8 | NNW 7 | NW 8 | NW 8 | NW 7 | NNW 8 | NW 8 | NNW 7 | NW 6 | WNW 10 | NNW 7 | NW 14 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 204 | 118 | 68 | 239 | 440 | 362 | 242 | 254 | 198 | 129 | 59 | 38 | 54 | 46 | 192 | 437 | 450 | 344 | 246 | 187 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-off | on | cross-on | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off |
High Tide | 1:43AM2.60m | 1:58PM2.95m | 2:26AM2.77m | 2:40PM3.10m | 3:05AM2.88m | 3:19PM3.15m | 3:42AM2.92m | 3:56PM3.11m | 4:17AM2.90m | 4:32PM2.99m | 4:51AM2.81m | 5:07PM2.80m | ||||||||
Low Tide | 7:34PM0.26m | 7:44AM0.34m | 8:18PM0.07m | 8:26AM0.17m | 8:57PM-0.04m | 9:05AM0.07m | 9:33PM-0.07m | 9:42AM0.04m | 10:07PM-0.01m | 10:17AM0.08m | 10:39PM0.11m | 10:52AM0.19m | 11:10PM0.29m | |||||||
 |  | | |  | | | | | | | | | | | | | |  | | |
 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — |
 | 7:54 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:46 | — | — | 7:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 19 | 19 | 18 | 22 | 21 | 22 | 22 | 22 | 23 | 26 | 26 | 25 | 28 | 28 | 26 | 25 | 27 | 26 |
Feels °C | 16 | 18 | 16 | 13 | 12 | 19 | 18 | 20 | 22 | 22 | 22 | 25 | 23 | 23 | 25 | 26 | 25 | 22 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | NW 9 | NW 8 | N 13 | NW 11 | NW 8 | NNW 11 | NW 7 | NNW 8 | NW 8 | NNW 7 | NW 6 | NNW 6 | NNW 7 | SE 8 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 |
| kJ | 204 | 118 | 68 | 4 | 20 | 362 | 71 | 254 | 198 | 129 | 59 | 38 | 35 | 41 | 71 | 437 | 450 | 344 | 246 | 187 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | NW 10 | NW 10 | NNW 10 | NNW 10 | NNW 9 | SE 8 | SE 7 | WNW 10 | SE 8 | NNW 7 | SE 8 | SE 7 | — | WNW 9 | SE 6 |
| kJ | — | — | — | — | — | 25 | 34 | 62 | 38 | 29 | 20 | 23 | 54 | 46 | 38 | 79 | 52 | — | 28 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | NNW 12 | — | — | W 7 | ESE 7 | W 7 | WNW 10 | SE 7 | WNW 9 | NW 14 | WNW 9 | NW 6 | — | — | WNW 8 |
| kJ | — | — | — | — | — | 15 | — | — | 4 | 5 | 4 | 20 | 23 | 46 | 192 | 26 | 9 | — | — | 24 |
Wind waves Height (m) Direction Period (s) | NW 5 | NNW 6 | NW 5 | NW 8 | NNW 7 | — | NW 8 | — | — | — | — | — | ESE 7 | — | ESE 8 | ESE 8 | — | SE 7 | SE 7 | — |
| kJ | 62 | 87 | 32 | 239 | 440 | — | 242 | — | — | — | — | — | 83 | — | 302 | 287 | — | 29 | 35 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 65 | 65 | 468 | 257 | 65 | 65 | 653 | 23 | 0 | 9 | 9 | 9 | 9 | 0 | 9 | 9 | 0 | 9 | 0 | 0 |
Best forecast wave conditions in The Algarve | ||||||||||||||||||||
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 Castelejo 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 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.
Nearest