Surf Forecasts:
Castelejo surf forecast from 24 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 10AM (local time) - 4.5ft (1.4m), 8s period, WNW swell with glassy winds.
- Most powerful swell: Friday 28 Aug, 4PM (local time) - 8ft (2.5m), 11s period, NW swell with 1,483 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 10AM (local time) - 4.5ft (1.4m), 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 Tuesday (Aug 25) at 10AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.1m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Castelejo in the next 16 days are 2.5m 11s and forecast to arrive on Friday (Aug 28) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 7s period and expected on Sunday (Aug 30) at 7AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Tue 25th Aug) | 4.5ft (1.4m) 8s |
| Best Surf | 10AM (Tue 25th Aug) | 4.5ft (1.4m) 8s |
| Most Powerful | 4PM (Fri 28th Aug) | 8ft (2.5m) 11s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright, let's get real about Castelejo. Honestly, the next two weeks look pretty bleak for a proper paddle session. There’s a massive stretch coming up where the conditions just aren't playing ball.
Looking at the big picture, we have a lot of onshore and cross-onshore wind messing things up. The water temp at Castelejo is sitting at 68°, which is about 3° colder than you'd expect for this time of year, so you'll want a decent wetsuit.
It’s not until the morning of Tuesday the 25th of August that we get our first real glimmer of hope. That morning, the wind drops to nothing—glass. It’s completely calm. The swell is a small 5ft from the WNW with a short period of 8 seconds, and the combined energy is weak (220). It’s not going to be pumping, but with offshore from the SE predicted for this spot, the glassy conditions will make it look clean and rideable. This is the best bet in the first week for sure.
From Tuesday afternoon right through to the end of the first week and into the start of September, the wind just goes wrong. It’s almost all moderate to fresh cross-onshore breezes, making everything choppy and lumpy. The swell tries to pick up a bit—Friday the 28th sees 8ft to 8ft from the WNW and NW, with long 10-11 second periods, and the wave energy is strong (1207 to 1483). But the wind is a 15-22 mph onshore mess. It’s just too rough.
There is a massive gap of poor conditions right through until the 7th of September. That Monday morning, we get a proper surge of energy. The swell is a solid 8ft from the WNW with a very long period of 19 seconds. The combined energy is a massive 5533, indicating very strong wave energy. This is a serious groundswell. The catch is, the wind is from the N at 12 mph, making it cross-on, so it’ll be choppy. Because that period is so long, this setup is going to be better for a point break or reef than a beach break like this. It’s more promising for the experts who know where to sit, but it’s still a gamble with that wind.
Honestly, if you’re looking to get wet in the near term, that glassy morning on the 25th is your window. After that, you’re waiting over a week for something that *might* work on the 7th, and even then, the wind is a concern. For a spot that's usually very consistent, this is a tough run.
- Rusty
Short Range ForecastSome drizzle, heaviest during Wed afternoon. Warm (max 22°C on Mon morning, min 20°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Warm (max 21°C on Thu morning, min 17°C on Fri night). Winds increasing (light winds from the WNW on Thu night, strong winds from the NNW by Fri night). | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | W 9 | W 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | W 6 | W 6 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 10 | NW 11 | NW 11 | NW 10 | NW 9 | NW 7 | NW 8 | NW 8 | NNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 656 | 616 | 392 | 214 | 153 | 81 | 39 | 80 | 264 | 330 | 432 | 512 | 1207 | 1483 | 1149 | 535 | 357 | 183 | 169 | 143 | 229 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-on | on | on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on |
High Tide | 1:10PM2.30m | 1:36AM2.22m | 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 | ||||||||
Low Tide | 7:29PM0.72m | 7:34AM0.70m | 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 | ||||||||
 | |  | | |  |  |  | | | | | | | | | | | | | | |
 | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — |
 | — | 8:15 | — | — | 8:15 | — | — | 8:13 | — | — | 8:12 | — | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — |
mm | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 21 | 21 | 22 | 21 | 22 | 22 | 21 | 21 | 21 | 21 | 20 | 20 | 19 | 20 | 21 | 21 | 22 | 21 | 21 |
Feels °C | 20 | 22 | 22 | 24 | 22 | 21 | 21 | 22 | 21 | 18 | 18 | 19 | 16 | 15 | 14 | 16 | 17 | 16 | 20 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | NNW 6 | W 6 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 10 | NW 11 | NW 11 | NW 10 | — | NW 8 | NW 8 | ESE 7 | WNW 11 |
| kJ | 656 | 616 | 392 | 214 | 153 | 81 | 16 | 80 | 264 | 330 | 432 | 512 | 1207 | 1483 | 1149 | 535 | — | 102 | 169 | 5 | 13 |
Swell 2 Height (m) Direction Period (s) | N 8 | SW 13 | SW 12 | SW 12 | SW 12 | W 10 | W 9 | NW 7 | S 11 | S 11 | S 11 | — | — | — | — | — | — | SE 6 | ESE 6 | W 13 | SE 5 |
| kJ | 1 | 6 | 6 | 6 | 6 | 2 | 2 | 11 | 2 | 2 | 2 | — | — | — | — | — | — | 1 | 4 | 3 | 1 |
Swell 3 Height (m) Direction Period (s) | SW 13 | — | — | — | — | SW 12 | NW 11 | NW 10 | — | — | — | — | — | — | — | — | — | — | W 13 | W 10 | — |
| kJ | 7 | — | — | — | — | 5 | 5 | 4 | — | — | — | — | — | — | — | — | — | — | 3 | 2 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | W 6 | — | — | — | — | — | — | — | — | — | NW 9 | NW 7 | — | NW 8 | NNW 7 |
| kJ | — | — | — | — | — | — | 39 | — | — | — | — | — | — | — | — | — | 357 | 183 | — | 143 | 229 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 397 | 532 | 9 | 0 | 254 | 9 | 377 | 863 | 9 | 624 | 9 | 9 | 9 | 146 | 65 | 46 | 318 | 46 | 77 | 458 | 77 |
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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