Surf Forecasts:
Castelejo surf forecast from 22 Aug 2026:
- Best quality surf: Sunday 23 Aug, 4AM (local time) - 5ft (1.6m), 14s period, WNW swell with cross-offshore winds.
- Most powerful swell: Saturday 29 Aug, 1AM (local time) - 8ft (2.5m), 11s period, NW swell with 1,456 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 1AM (local time) - 3ft (0.9m), 16s 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 Sunday (Aug 23) at 1AM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 0.8m and 9s. 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 2.5m 11s and forecast to arrive on Saturday (Aug 29) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Sunday (Aug 23) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 23rd Aug) | 3ft (0.9m) 16s |
| Best Surf | 4AM (Sun 23rd Aug) | 5ft (1.6m) 14s |
| Most Powerful | 1AM (Sat 29th Aug) | 8ft (2.5m) 11s |
Table - best surf conditions forecast for Castelejo over the next 16 days.
The Lowdown
Alright, grab a coffee and let’s talk Castelejo. It’s a beach and reef set-up, wide open to the north-west, and it breaks pretty much all the time. The water’s about 68°F, which is a tad cooler than usual for this time of year – nothing dramatic, just a bit of a nip.
The first few days are a bit of a bust for a good surf. Saturday the 22nd, there’s a 3ft swell from the NNW, but that 9 mph cross-on wind from the west is making a mess of it. The energy is weak (274), and it’s just poor. Sunday the 23rd is the real highlight. The swell jumps to 7ft from the WNW with a 12-second period – that’s proper groundswell. The wind is cross-off from the south, so it’ll be clean, but there’s a “marginal” note for tide. Still, that’s the best of the first week. The combined energy is strong (1152), so there’s plenty of push. Sunday morning is your window.
Monday the 24th drops to 7ft from the west, but the cross-shore wind and short period (8-9 seconds) make it lumpy. The rest of the week is a bit of a letdown. Tuesday the 25th starts with a lovely 5ft swell from the WNW and glassy conditions – a 3 mph wind, dead flat water. The energy is moderate (220). That Tuesday morning session is the other standout. From Wednesday on, it’s a long stretch of poor conditions. The swell hangs around 3ft to 6ft, but the wind is always cross-on or onshore, mostly from the north or NNW, and it’s blowing 12 to 19 mph. The energy varies from weak (54) to strong (1195), but the wind kills it. Friday the 28th afternoon has a 6ft swell from the NW with a 10-second period and a strong 19 mph onshore wind – that’s more for the kite guys than the paddle crew.
The first week of September is a real drag. There’s a gap of several days with no real good options. The swell stays small, between 2ft and 5ft, and the wind is relentless – cross-on or onshore, often a fresh breeze. The only thing that catches the eye is the last entry, Sunday the 6th of September. It’s a tiny 2ft swell from the NW, but with a 12-second period (groundswell) and a moderate onshore wind. The combined energy is moderate (216). It’s a long shot, but that long period might make the reef work. For the best of the fortnight, it’s Sunday the 23rd of August morning for the size and the groundswell, and Tuesday the 25th of August morning for the glassy conditions. The rest is a no-go.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun night. Warm (max 22°C on Sun morning, min 20°C on Sat afternoon). Winds decreasing (fresh winds from the SSW on Sun night, calm by Tue morning). | Days 5-7 Weather SummarySome drizzle, heaviest during Wed afternoon. Warm (max 22°C on Tue afternoon, min 17°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sat 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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) | NNW 10 | WNW 16 | WNW 12 | W 11 | W 9 | W 9 | W 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | WNW 6 | W 6 | WNW 7 | WNW 8 | NW 8 | NW 9 | NW 9 | NW 10 | NW 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 200 | 344 | 1119 | 924 | 764 | 653 | 610 | 392 | 214 | 157 | 88 | 48 | 60 | 102 | 170 | 311 | 379 | 586 | 745 | 1456 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | glassy | cross-on | cross-on | cross | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 11:54PM1.90m | 12:19PM2.11m | 00:53AM2.05m | 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 | |||||||
Low Tide | 5:38PM1.05m | 5:57AM1.05m | 6:44PM0.90m | 6:53AM0.89m | 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 | |||||||
 |  |  | |  |  | |  | | | | |  | | | | | | | | |
 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — |
 | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:13 | — | — | 8:12 | — | — | 8:10 | — |
mm | — | — | — | — | 2 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 22 | 21 | 22 | 22 | 21 | 21 | 22 | 20 | 19 | 19 | 19 |
Feels °C | 19 | 21 | 19 | 19 | 21 | 20 | 21 | 22 | 24 | 22 | 21 | 21 | 21 | 21 | 21 | 20 | 19 | 15 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | NNW 10 | WNW 16 | WNW 12 | W 11 | W 9 | SW 13 | W 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | WNW 6 | W 9 | WNW 7 | WNW 8 | NW 8 | NW 9 | NW 9 | NW 10 | NW 11 |
| kJ | 200 | 344 | 1119 | 924 | 764 | 7 | 610 | 392 | 214 | 157 | 88 | 48 | 2 | 102 | 170 | 311 | 379 | 586 | 745 | 1456 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | S 13 | SW 13 | SW 12 | SW 12 | SW 12 | W 10 | W 9 | NW 10 | SW 11 | SW 11 | S 11 | S 11 | — | — | — |
| kJ | 28 | 106 | 26 | 14 | 6 | 3 | 6 | 6 | 6 | 6 | 2 | 2 | 4 | 5 | 4 | 2 | 2 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 14 | WNW 8 | SW 13 | SW 13 | SW 13 | — | — | — | — | — | SW 12 | NW 11 | SW 11 | — | — | — | — | — | — | — |
| kJ | 8 | 24 | 7 | 7 | 7 | — | — | — | — | — | 5 | 4 | 5 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 9 | — | — | — | — | W 9 | — | — | — | — | — | — | W 6 | — | — | — | — | — | NW 10 | — |
| kJ | 38 | — | — | — | — | 653 | — | — | — | — | — | — | 60 | — | — | — | — | — | 450 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 532 | 0 | 79 | 285 | 79 | 397 | 139 | 9 | 0 | 254 | 9 | 390 | 411 | 9 | 9 | 613 | 9 | 9 | 252 | 178 |
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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