Surf Forecasts:
Castelejo surf forecast from 25 Aug 2026:
- Most powerful swell: Friday 28 Aug, 10AM (local time) - 8ft (2.5m), 12s period, WNW swell with 1,596 kJ wave energy.
Best Forecast Surf Conditions for Castelejo this week:
The most powerful waves expected at Castelejo in the next 16 days are 2.5m 12s and forecast to arrive on Friday (Aug 28) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 11s period and expected on Thursday (Aug 27) at 4AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Fri 28th Aug) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at the surf situation for Castelejo. It's a pretty quiet stretch ahead, so let's get into it.
We've got a bit of a gap before anything really shows up. Surf is pretty much non-existent to start. The first real chance to get wet isn't until the morning of Tuesday, 25 August. That morning is your only real bright spot in the whole 16-day run. The water is sitting at 66°, which is a solid 5° colder than what’s normal for this time of year. That’s a noticeable chill, so a thicker wetsuit is the call.
For that Tuesday morning, 25 August, the conditions line up nicely at Castelejo. We've got a WNW swell coming in at 5ft with a period of 8 seconds. The combined swell energy is sitting at 238 (moderate), so there's a bit of push behind it. The wind is glassy from the south at just 3 mph, which is going to keep the surface clean. It's a beach and reef setup, very consistent, and the optimum swell direction is from the NW, so this WNW groundswell is a solid match. This is the morning to be out there if you can make it.
From Tuesday afternoon, things fall apart. The wind swings cross-on and kicks up, and the surf quality drops fast. We go through the rest of August and the whole of September with a long, bleak stretch of poor conditions. The wind is mostly strong and cross-on or onshore from the NNW or N, with speeds frequently over 15 mph through to 25 mph. There are a few days in there, like Friday morning, 28 August, when the swell jumps up to 8ft from the WNW with a long 11-second period and offshore wind, but the combined energy is huge at 1462 (very strong). It’s also flagged as marginal due to questionable tide conditions. For that size and energy level at a beach and reef, it's really one for experts only, and the tide could make it tricky.
Honestly, after that Tuesday morning, there’s nothing else in the window worth paddling out for. The wind just doesn't give us a break. It’s a long, blank run that’s pretty normal for this area when the wind locks in from the north. Forecasts can always change, but as it stands, make the most of that Tuesday morning.
Stay stoked.
Rusty
Short Range ForecastSome drizzle, heaviest during Wed afternoon. Warm (max 22°C on Tue morning, min 19°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun morning, min 18°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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 8 | WNW 7 | WNW 7 | WNW 6 | W 6 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 12 | WNW 11 | NW 10 | NW 9 | NW 9 | NNW 7 | NW 8 | NNW 8 | NW 10 | NW 9 | NW 8 | NW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 232 | 153 | 73 | 66 | 108 | 284 | 350 | 378 | 432 | 1596 | 1198 | 769 | 440 | 307 | 302 | 71 | 219 | 164 | 84 | 196 | 373 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 1:49PM2.49m | 2:11AM2.38m | 2:24PM2.68m | 2:44AM2.53m | 2:55PM2.83m | 3:15AM2.65m | 3:27PM2.93m | 3:46AM2.74m | 3:58PM2.98m | 4:18AM2.78m | 4:31PM2.97m | 4:51AM2.77m | 5:05PM2.89m | ||||||||
Low Tide | 8:05PM0.54m | 8:09AM0.53m | 8:37PM0.37m | 8:41AM0.37m | 9:08PM0.23m | 9:12AM0.25m | 9:38PM0.13m | 9:44AM0.18m | 10:09PM0.09m | 10:16AM0.16m | 10:41PM0.10m | 10:50AM0.19m | 11:14PM0.18m | ||||||||
 | |  | |  |  | |  | | | | | | | | | | | | | | |
 | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — |
 | — | 8:15 | — | — | 8:13 | — | — | 8:12 | — | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 21 | 21 | 22 | 21 | 21 | 21 | 21 | 19 | 19 | 20 | 21 | 21 | 20 | 22 | 22 | 21 | 21 | 21 | 19 |
Feels °C | 22 | 20 | 21 | 20 | 22 | 21 | 18 | 18 | 19 | 16 | 15 | 15 | 18 | 17 | 16 | 19 | 19 | 17 | 16 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 7 | WNW 7 | W 9 | W 6 | WNW 8 | S 11 | WNW 8 | WNW 8 | WNW 12 | WNW 11 | NW 10 | NW 9 | — | — | NW 8 | W 13 | NW 10 | NW 9 | NW 9 | NW 10 |
| kJ | 232 | 153 | 73 | 2 | 108 | 284 | 2 | 378 | 432 | 1596 | 1198 | 769 | 440 | — | — | 71 | 3 | 142 | 84 | 84 | 54 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 12 | W 10 | NW 11 | NW 10 | SW 11 | — | S 11 | S 10 | — | — | — | — | — | — | — | S 11 | WNW 12 | NNW 9 | SW 16 | SW 16 |
| kJ | 6 | 6 | 2 | 5 | 4 | 5 | — | 2 | 2 | — | — | — | — | — | — | — | 2 | 14 | 71 | 10 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 12 | SW 12 | W 9 | — | — | — | — | — | — | — | — | — | — | W 13 | — | S 10 | SW 17 | — | — |
| kJ | — | — | 5 | 5 | 2 | — | — | — | — | — | — | — | — | — | — | 4 | — | 2 | 12 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | WNW 6 | W 6 | — | WNW 8 | — | — | — | — | — | — | NW 9 | NNW 7 | NNW 6 | NNW 8 | NNW 6 | NW 6 | NW 8 | NW 7 |
| kJ | — | — | — | 66 | 71 | — | 350 | — | — | — | — | — | — | 307 | 302 | 70 | 219 | 164 | 66 | 196 | 373 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 613 | 9 | 377 | 465 | 9 | 405 | 609 | 20 | 9 | 118 | 46 | 46 | 390 | 65 | 77 | 609 | 77 | 347 | 65 | 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.
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