Surf Forecasts:
Castelejo surf forecast from 26 Aug 2026:
- Most powerful swell: Friday 28 Aug, 10PM (local time) - 7ft (2.2m), 11s period, NW swell with 1,080 kJ wave energy.
Best Forecast Surf Conditions for Castelejo this week:
The most powerful waves expected at Castelejo in the next 16 days are 2.2m 11s and forecast to arrive on Friday (Aug 28) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 5s period and expected on Wednesday (Aug 26) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Fri 28th Aug) | 7ft (2.2m) 11s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright, old mate. Let’s have a look at what’s on the cards for the next couple of weeks. I’ll be straight with you – it’s a pretty grim run for a while. The whole 16-day window is a real mixed bag of onshore winds and slop, with a few tiny windows where things clean up but never really get good. There’s a big gap of poor surf from now until the start of September, with nothing worth paddling out for. The water temperature here at Castelejo is sitting at 68°, which is a bit colder than usual for this time of year – that’s about 3° cooler than normal, so you’ll feel that nip.
The first real chance of anything half-decent doesn’t show up until the morning of Friday, September 4th. That morning, we’ve got a clean-looking sky with a light offshore breeze from the ENE at 6 mph, keeping the surface smooth. The swell is small, coming from the NW at 4 ft with a short period of 8 seconds, and the combined energy is weak at 176. It’s surfable, but very ordinary. The afternoon is similar, with a tiny 4 ft NW swell, light SSE winds at 3 mph, and even lower energy at 136. Keep your expectations low.
Into Saturday, September 5th, the morning is still clean with a light ESE breeze, but the swell drops to 3 ft from the NW with a period of just 7 seconds. This is small and weak, with energy at 121. The afternoon gets a bit more interesting though – the swell bumps up to 4 ft from the NW, but the period jumps to 13 seconds, which is a long-period groundswell. That’s more energy, with combined energy at 526, but the wind swings onshore from the W at 6 mph, bringing light cross-onshore bumps. The tide could be a factor, so it’s marginal. Given the long period, this would actually be better at a point or reef, but Castelejo is a beach and reef spot, so the waves might break a bit too straight for my liking.
The standout session, if you can call it that, is probably the morning of Friday, September 4th. It’s crisp, clean, and the wind is offshore – that’s the major positive. But the swell is tiny and weak. If you’re desperate for a paddle, that’s your window. There’s nothing else in the whole 16 days that gets above a score of 2, and even that’s a stretch. For the rest of the time, the wind is mostly cross-on or onshore, lumpy, and messy. The swell direction is out of the NW, which is actually the optimum direction for this spot, but the wind ruins it.
So, bottom line: it’s a quiet period. The forecasts can always change, but for now, you’re better off cleaning the wax off your board and waiting for a proper run.
Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Wed afternoon. Warm (max 22°C on Wed morning, min 18°C on Thu night). Winds increasing (light winds from the NE on Thu night, fresh winds from the NNW by Fri night). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sun morning, min 17°C on Mon night). Mainly strong winds. | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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 6 | W 6 | WNW 7 | W 8 | WNW 8 | WNW 8 | WNW 10 | WNW 11 | NW 10 | NW 10 | NW 9 | NNW 8 | NW 8 | NW 8 | NW 10 | NW 9 | NW 9 | NNW 7 | NW 9 | NW 8 | NNW 8 |
Wave Graph | |||||||||||||||||||||
53 | 124 | 228 | 346 | 419 | 488 | 882 | 938 | 1040 | 652 | 427 | 394 | 86 | 187 | 292 | 188 | 388 | 363 | 586 | 502 | 618 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | on | on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 5:26AM2.71m | 5:43PM2.75m | ||||||||
Low Tide | 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 | 11:28AM0.27m | 11:51PM0.31m | ||||||||
7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | |
— | 8:13 | — | — | 8:12 | — | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:05 | — | |
mm | — | 1 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 21 | 21 | 19 | 22 | 22 | 21 | 21 | 21 | 19 | 20 | 20 | 19 |
Feels °C | 19 | 20 | 20 | 17 | 17 | 19 | 18 | 16 | 16 | 17 | 17 | 14 | 20 | 19 | 18 | 16 | 16 | 13 | 15 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 6 | W 6 | WNW 7 | S 11 | WNW 8 | WNW 8 | WNW 10 | WNW 11 | NW 10 | NW 10 | — | — | NW 8 | NW 12 | NW 10 | NW 9 | SW 16 | NW 10 | SW 15 | SW 15 | SW 14 |
53 | 124 | 228 | 2 | 419 | 488 | 882 | 938 | 1040 | 652 | — | — | 86 | 37 | 292 | 188 | 10 | 124 | 9 | 8 | 8 | |
Swell 2 Height (m) Direction Period (s) | W 9 | NW 10 | SW 11 | — | S 11 | S 10 | — | — | — | — | — | — | — | W 13 | WNW 12 | SW 17 | S 10 | SW 16 | — | — | — |
2 | 4 | 5 | — | 2 | 2 | — | — | — | — | — | — | — | 3 | 14 | 12 | 2 | 10 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | NW 11 | W 9 | — | — | — | — | — | — | — | — | — | — | — | — | S 12 | — | — | — | — | — | — |
5 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | W 6 | W 6 | — | W 8 | — | — | — | — | — | NNW 6 | NW 9 | NNW 8 | NNW 6 | NW 8 | NNW 6 | NNW 6 | NW 9 | NNW 7 | NW 9 | NW 8 | NNW 8 |
39 | 83 | — | 346 | — | — | — | — | — | 88 | 427 | 394 | 47 | 187 | 104 | 61 | 388 | 363 | 586 | 502 | 618 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 346 | 411 | 9 | 405 | 9 | 9 | 9 | 118 | 166 | 65 | 613 | 65 | 77 | 609 | 65 | 178 | 609 | 65 | 65 | 638 | 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.











